@CarswellsCustoms Hello, I am needing help on my 2009 G8 GT, the chassis harness connector (yellow back) I have is cut flush and you show it right after you plug in your J1 and J2 ecm connectors. There seems to be multiple colors the same and brown sets of twisted wires all the same how can I re attach correctly instead of routing a whole new harness in? I have a new chassis harness but I have heard it's horrible to replace.
Hi everyone, I just did a search for "G8 Parout" on FB Marketplace and in Taylor, MI there is a computer, engine harness and main harness for $200. The title is: 2008 G8 gt ecm and engine harness and main harness
Yes, I am currently upgrading the fuel system to 1/2" line, E85 and a supercharger in the future. Currently waiting on parts but I should have another video out soon.
Yes, I am currently building a stout 1/2" size e85 fuel system. The owner is planning a supercharger so we are planning ahead and ensuring the supporting infrastructure is in place before that. I am currently waiting on parts but when I get some good stuff going, I will post it. Thanks for the comment!
@Spartan Link_047 If you are going to do all the work yourself then it can be a good deal. Take someone with you that knows bodywork and look for impact damage, different color bolts or missing bolts on the body panels. I partout G8's and the parts sell quick - which tells me that people are smashing them up. I have a buddy that bought one without taking along a mechanic/body guy and it was full of Bondo! Pick up the ECM and the wiring harnesses I outline along with a donor engine that has a 58 tooth reluctor wheel - USUALLY 2005 and up 5.3 or 4.8 is the budget route. I have a second G8 video that outlines supplemental parts. Good luck and let me know if you have any questions. My email is mymusiconmyiphone@gmail.com
@ Derrick Gregory I used Alldata DIY for the swap to verify harnesses and compatibility. I would suggest you get the v6 and v8 Camaro subscriptions and compare. That is the only way to get reliable info. I believe I have a discount code if you email me at mymusiconmyiphone@gmail.com
@@nickstarnes3374 It's hard to find a harness, if you want an easy G8 GT then get a V8 car to begin with. I don't know how hard it is to source the 2 harnesses shown in my video now.
Sorry old video but I’m swapping my v6 to a v8, and I’m under the impression I can get away with just swapping the engine harness, and not the chassis harness. What are your thoughts?
a little late to the parts, i have a base g8 and a donor gt, i pulled the gt bcm but chassis harness is still in, i looked through the comments and watched the vid but didnt hear anything about the chassis harness being different and also heard that they are the same and they are different, just trying to save me trouble thanks
@bracken.g8488 Hi, I believe the body harness uses the same BCM as the G8GT. I other people who have completed the swap using a G8GT BCM in the v6 body harness.
okay so i can leave the chassis harness in my base g8 and since i have the gt bcm i will just swap that in and i guess i will be good to go, perfect man thank you@@CarswellsCustoms
@@bracken.g8488 There is a guy on FB that showed the progress of his swap with vids and pics, maybe search him up on FB? Email me and I will send you his info mymusiconmyiphone@gmail.com
It should not be much different but I would check AlldataDIY. Get a g8 subscription and you will be good to go. When I was doing the swap, that software is what I used.
Do you have any knowledge on how I could do the wiring for a 6 speed manual conversion without getting the GXP harness? Or do I just have to bite the bullet and get the GXP harness? Thanks You In Advance.
It depends on the car's mission... If you want everything to work as stock then the easy answer is yes. If you want to do some experimenting then you would have to see if your 6l80 has the same type of speed sensor as the manual trans, if not - swap the sensors and wire the manual vss into the 6l80 harness and test. I have never done this so I cant say if it will work.
@carriethomas8661 Alldata has the wiring harness information and all the fuse blocks, and you can print them out. If you want to build your own harness use this resource, it is one of the best: lt1swap.com/wiringharness.htm He also has RUclips videos on how to DIY.
I am not familiar with the 2013 Caprice. I would strip the V8 donor of its ECM and BCM (body control module) along with the engine wiring harness and the engine to chassis harness. Then give it a whirl...
So will this wire harness work with a junkyard 5.3 lol or a 6.0 from a truck since g8 6.0s pretty much don't exist in Canada, will the harness plug into the 5.3s sensors. I have a v6 car and it blew up and just as hard to find a v6 as a 6.0 so thinking 5.3 swap 🤷♂️ and info would be helpful like will the stock 5l40 hold up to a stock 5.3? Will the ecm work with a 5.3?
It should work with a 58 tooth reluctor wheel engine. I have a v8 ecm and both wiring harness's I will sell you that will control a 6l80e or manual transmission. I dont know anything about the 5l40, but if I was going to do this work, I would put in a th400 if I wanted to do a budget build. At least it will hold up until you can afford a 6l80 or T56. email me at mymusiconmyiphone@gmail.com
I'm wondering what swapping the harness that goes through the firewall to the passenger kick panel accomplishes, I understand there's extra wires for the tcm, but if the fuse boxes are identical... Well, here I have an oddball situation, I'm putting a garden variety LS back into a G8 GT car, but the original engine bay electronics were cut at that harness under the fuse box. I have a V6 donor car. Do you think I can just play match the wire colors and splice the connector back in?
To standardize the swap, and eliminate future errors that I would have to troubleshoot and repair. Since the harnesses have different part numbers and the engine configuration is changed I dont want to rewire the car when the V8 harnesses are available. To help with your swap and identify the differences pick up AllDataDIY its the best. Let me know how it goes!
We have not had an issue with the BCM. I tune out the VATS in the ECM using HPTuners. If there was an issue, you could get an ECM rewritten with the correct vin for $100. You could also pull the BCM from the donor car. Do you know anyone who has had issues?
We parted it out. We found structural damage that was bondo'ed over and hid. It had a hard impact in the passenger rear that affected the rear door, rear quarter/chasis and moved the IRS subframe over. Crappy deal, the buyer was not a car guy and got taken. We found out when I was upgrading the fuel pump by going in and out of the rear passenger door and the door did not line up. After further investigation we found the body filler.
Sorry, I dont quite understand the question. The v6 trans computer is separate from the engine computer in the v6. In the v8 one computer controls both the engine and trans. Did I get close?
We swapped the fuel system, rear differential (optional), replaced the driveshaft carrier bearing (worn out), exhaust, there is more but a lot of it is replacing worn out existing parts like wheel bearings, brakes, etc.
Initially the first obstacle is if you purchase all the G8GT wiring harnesses and computer, the G8GT computer requires the 58tooth reluctor wheel. Make sure your LQ9 has the 58tooth, I am not familiar with that year so I would research that first. Let me know what you find out!
Question, would it be easier to just buy a wrecked gt with intact engine and wire harness and swap it over to the v6 or to buy a pulled 6.0 with the harness, i assume programing would need to be done to retain gauges and factory components
It depends on availability of parts. When you swap harnesses and computer from v8 to v6 the gauges work fine. I have a complete swap harness and L76 in my garage. Email me at mymusiconmyiphone@gmail.com
Sorry, I dont understand the question, but this harness and computer can be applied to any 2005 and up LS with 58 tooth reluctor wheel but not direct injection of course.
I have used everything to complete the v6 to v8 swap for the Pontiac g8 but running in to trouble with fault lights and cannot communicate with data link to program anything really need help I got everything for the built this just my problem I'm having
Hi Benjamin, I have not run into this problem before but I would first start by checking all grounds in the factory harness and especially check the PCM grounds. The ground on the back of the driver side cylinder head is super weak and breaks all the time. You may have to trace the data link wires back to the ECM from the OBD2 port looking for damage. Once you get the data link going, you can turn off the VATS in the engine computer using HPTuners.
hello how are you plz i have hummer h3 2006 v5 3.5 l with E40 ECM if i find v8 gn4 with E67 Ecm and harness i can put it on my h3 and work properly all gauges and ABS and traction control? and transmission sure i wanna make changes in the 4l60 to v8 ...
I have not completed that swap yet so I cannot tell you that it will work with certainty. You will have to know the exact engine and transmission combination that came in the V8 version of the H3 stock and reluctor wheel count on the replacement engine 58x or 24x and compare. My first step if I was going to complete this swap is look up AllData DIY.com, purchase subscriptions on the v8 and 5cyl version and compare harnesses. I cant imagine GM making it too difficult to have different drivetrain in different models as having dissimilar platforms costs more money. Good Luck and let me know what you find out!
So all I have to do is install the 2 harnesses in the engine bay and drop my 6.0 L76 engine in with PCM & will it run or is there more to be done inside the vehicle as well? Please let me know at your convenience, thank you!
The 6cyl positive battery cable is shorter than the L76 so that will need to be addressed. The engine mounts and rubber isolators need to be from an L76 car. But inside the car all the connectors are the same except the v6 has a separate transmission controller that needs to be unplugged to remove the v6 wiring harness. To run the chassis harness through the firewall remove the windshield wipers and the plastic cover beneath them along with the heater/ac box that is bolted to the firewall. The v6 harness is a pain to remove so use some patience as there are retaining clips that keep the v6 harness in place. I hope this helps.
Can I still use the V6 interior harness and plug in, don’t understand about the transmission harness inside of the vehicle where it comes through the firewall? Please let me know if I will need further wiring harness inside the vehicle or can I plug and play so to speak, you’re help and video helps! Thanks!
Answer Part 1: In my opinion all the LS series engines are great because of the head designs are super efficient. You will get more torque with the 6.0 but prices are better for the 4.8/5.3. So lots of variables and everyone has their own opinion and budget. I have built 6.0 5.3 4.8 and taken molds of the cylinder head intake and exhaust runners along with the LSX race heads. You would be suprised how similar the production heads are to the LSX heads. Heads are horsepower and all the LS engines got the goods.
Answer Part 2: If you want the factory gauges and the G8 GT computer to work with the 5.3, you will need to change the reluctor wheel on the 5.3 from a 24 tooth to a 56 tooth. That requires complete disssassembly of the engine. I keep a 4.8 crank in my shop with a 56 tooth already installed. Since this can be a pain in the ass, it may be better to purchase a later model engine that has the 56 tooth already installed. BTW, dont buy engines from people you dont trust, dont buy without hearing run, or dont buy without a warranty that has enough time for you to actually complete your project inside the warranty timeframe. Great engines but when they are overheated the heads do crack on the top of the head in the area of the rocker arm bolts.
Yes, if you check FB Marketplace you can reference the wiring harness numbers that I provided and lots of people are parting out G8's. It makes parts shopping a lot easier.
@@Sloan3 Join a G8 FB group or dedicated G8 Parts group. That is where I found the harnesses. Also do a FB Marketplace search of "G8 Partout". Be sure join groups that are not in your state as shipping is cheap compared to not having all the parts. GM discontinued the harnesses so it will be a bit tough to accomplish. But hell, nothing worth doing is ever easy!
@@Sloan3 I just did a search for "G8 Parout" and in Taylor, MI there is a computer, engine harness and main harness for $200. The title is: 2008 G8 gt ecm and engine harness and main harness
Where can I get the whole harness? I’m going to swap a 5.3 in a base g8 v6. What other electrical components would I need to make the swap? Thanks in advance
Great info thank you!!!! And who wouldn’t like to see a LS boat engine swap!!!
I am pretty excited too!
Genuinely appreciate the video regarding the harnesses!!
Awesome! I hope it helps out.
Huge help. Thanks.
Your welcome! Thank you for commenting!!
I’m gonna swap my engine thanks for the tips💯
Awesome! I am so glad I could help!!
@CarswellsCustoms Hello, I am needing help on my 2009 G8 GT, the chassis harness connector (yellow back) I have is cut flush and you show it right after you plug in your J1 and J2 ecm connectors. There seems to be multiple colors the same and brown sets of twisted wires all the same how can I re attach correctly instead of routing a whole new harness in? I have a new chassis harness but I have heard it's horrible to replace.
I'd love to see the process.
.
I wonder if the fuse box plug is the same on a 2010 camaro
Great content and always very knowledgeable!!
Thank you!
Hi everyone, I just did a search for "G8 Parout" on FB Marketplace and in Taylor, MI there is a computer, engine harness and main harness for $200. The title is:
2008 G8 gt ecm and engine harness and main harness
No response
By any chance you going to do a v6 to v8 swap? If so really looking forward into seeing that content!
Yes, I am currently upgrading the fuel system to 1/2" line, E85 and a supercharger in the future. Currently waiting on parts but I should have another video out soon.
Thanks for the info it made it easier to understand
Awesome! Glad I could help.
Great Info, thank you for the video. Any chance you are going to show more of the V6 to V8 build?
Yes, I am currently building a stout 1/2" size e85 fuel system. The owner is planning a supercharger so we are planning ahead and ensuring the supporting infrastructure is in place before that. I am currently waiting on parts but when I get some good stuff going, I will post it. Thanks for the comment!
Hey I have a few questions on my swap
I have wanted a G8 for years, the only ones I can find are V6s so I'm thinking of doing a swap.
Subscribed.
@Spartan Link_047 If you are going to do all the work yourself then it can be a good deal. Take someone with you that knows bodywork and look for impact damage, different color bolts or missing bolts on the body panels. I partout G8's and the parts sell quick - which tells me that people are smashing them up. I have a buddy that bought one without taking along a mechanic/body guy and it was full of Bondo! Pick up the ECM and the wiring harnesses I outline along with a donor engine that has a 58 tooth reluctor wheel - USUALLY 2005 and up 5.3 or 4.8 is the budget route. I have a second G8 video that outlines supplemental parts. Good luck and let me know if you have any questions. My email is mymusiconmyiphone@gmail.com
Excellent info ✔️
Thank you! I hope it helps.
For sure! Liked and subbed
How about the accessories and
Stock v6 trans ?
Itching to get a G8 v6 and slap a 4.8 in it !
Thanks
I’m doing a ls swap on my v6 g8. 2008. 5.3 swap.
@ericoskos4500 Go for it! Plenty of people have done it.
I've been looking for this info for a 2011 Camaro.
@ Derrick Gregory I used Alldata DIY for the swap to verify harnesses and compatibility. I would suggest you get the v6 and v8 Camaro subscriptions and compare. That is the only way to get reliable info. I believe I have a discount code if you email me at mymusiconmyiphone@gmail.com
Thank you very hhelpful
@Brian Sims glad you found it useful.
Thinking about swapping my g8 could I get away with just the motor wire harness I would I have to do both
Both.
Yea
Yes! Thank you!
Hi I'm swapping my g8 but I have a proble to start the car with the key you dont now what i can do
.
The chassis harness goes through the entire car?
@Jae_in_the_88 The harnesses all connect together so the systems run throughout the entire car. The 2 harnesses you need are in the video.
I have v6 but can I use a stand alone hardness ? To run v8 would the inside still work
I don't know, the G8 videos and part numbers worked. I have not tried connecting anything else up.
Is it really difficult to Ls swap a v6? A lot of people are making it seem very difficult .
It depends on your tenacity. If you have more time than money, swap it. If you have more money than time, buy a G8 GT.
Was it mandatory to swap the chassis harness as well? I only ask because I’m finding it impossible to find that part # exactly
Everything in the video I list is mandatory. They are tough to find, I would search FB for partouts.
Looking to do this swap on my own g8 sometime.
If you have questions, just post them. I will try to help.
I want to see the swap in the from the g8 v6
Hit FB for G8 groups for more info. Lots of good stuff out there.
I jist want to know if it will be easier for me to just go with a v6 and do the swap myself.
@@nickstarnes3374 It's hard to find a harness, if you want an easy G8 GT then get a V8 car to begin with. I don't know how hard it is to source the 2 harnesses shown in my video now.
Sorry old video but I’m swapping my v6 to a v8, and I’m under the impression I can get away with just swapping the engine harness, and not the chassis harness. What are your thoughts?
I actually just shot you an email. Had a couple questions. Thanks man
.
would u recommend doing this swap with a wrecked g8 and changing it over to the v6 body ?
@ih8sp1das Yes, having a donor is important for the wiring and the body control module. Also the v8 wiring harnesses are getting harder to find.
a little late to the parts, i have a base g8 and a donor gt, i pulled the gt bcm but chassis harness is still in, i looked through the comments and watched the vid but didnt hear anything about the chassis harness being different and also heard that they are the same and they are different, just trying to save me trouble thanks
@bracken.g8488 Hi, I believe the body harness uses the same BCM as the G8GT. I other people who have completed the swap using a G8GT BCM in the v6 body harness.
okay so i can leave the chassis harness in my base g8 and since i have the gt bcm i will just swap that in and i guess i will be good to go, perfect man thank you@@CarswellsCustoms
@@bracken.g8488 There is a guy on FB that showed the progress of his swap with vids and pics, maybe search him up on FB? Email me and I will send you his info mymusiconmyiphone@gmail.com
trying to swap my 08 g8 base for a ls3 will the harness be hell different
It should not be much different but I would check AlldataDIY. Get a g8 subscription and you will be good to go. When I was doing the swap, that software is what I used.
Do you have any knowledge on how I could do the wiring for a 6 speed manual conversion without getting the GXP harness? Or do I just have to bite the bullet and get the GXP harness? Thanks You In Advance.
It depends on the car's mission... If you want everything to work as stock then the easy answer is yes. If you want to do some experimenting then you would have to see if your 6l80 has the same type of speed sensor as the manual trans, if not - swap the sensors and wire the manual vss into the 6l80 harness and test. I have never done this so I cant say if it will work.
Does alldata include how to build your own harness? Or just goe they run?
@carriethomas8661 Alldata has the wiring harness information and all the fuse blocks, and you can print them out. If you want to build your own harness use this resource, it is one of the best: lt1swap.com/wiringharness.htm He also has RUclips videos on how to DIY.
I got a 2013 caprice 3.6 I'm swapping a ls3 into it do I need to have the v8 computer program with the correct vin number?
I am not familiar with the 2013 Caprice. I would strip the V8 donor of its ECM and BCM (body control module) along with the engine wiring harness and the engine to chassis harness. Then give it a whirl...
So will this wire harness work with a junkyard 5.3 lol or a 6.0 from a truck since g8 6.0s pretty much don't exist in Canada, will the harness plug into the 5.3s sensors. I have a v6 car and it blew up and just as hard to find a v6 as a 6.0 so thinking 5.3 swap 🤷♂️ and info would be helpful like will the stock 5l40 hold up to a stock 5.3? Will the ecm work with a 5.3?
It should work with a 58 tooth reluctor wheel engine. I have a v8 ecm and both wiring harness's I will sell you that will control a 6l80e or manual transmission. I dont know anything about the 5l40, but if I was going to do this work, I would put in a th400 if I wanted to do a budget build. At least it will hold up until you can afford a 6l80 or T56. email me at mymusiconmyiphone@gmail.com
Would you happen To have both wiring harness and ecu that you would Be willing to sell?
I do, email me at mymusiconmyiphone@gmail.com I have the ECU, BCM and both harnesses - everything you need in the computer and wiring department.
I'm wondering what swapping the harness that goes through the firewall to the passenger kick panel accomplishes, I understand there's extra wires for the tcm, but if the fuse boxes are identical... Well, here I have an oddball situation, I'm putting a garden variety LS back into a G8 GT car, but the original engine bay electronics were cut at that harness under the fuse box. I have a V6 donor car. Do you think I can just play match the wire colors and splice the connector back in?
To standardize the swap, and eliminate future errors that I would have to troubleshoot and repair. Since the harnesses have different part numbers and the engine configuration is changed I dont want to rewire the car when the V8 harnesses are available. To help with your swap and identify the differences pick up AllDataDIY its the best. Let me know how it goes!
So can you keep the v6 body control module.
We have not had an issue with the BCM. I tune out the VATS in the ECM using HPTuners. If there was an issue, you could get an ECM rewritten with the correct vin for $100. You could also pull the BCM from the donor car. Do you know anyone who has had issues?
What ever happened to the G8 V8 swap?
We parted it out. We found structural damage that was bondo'ed over and hid. It had a hard impact in the passenger rear that affected the rear door, rear quarter/chasis and moved the IRS subframe over. Crappy deal, the buyer was not a car guy and got taken. We found out when I was upgrading the fuel pump by going in and out of the rear passenger door and the door did not line up. After further investigation we found the body filler.
I’m confused about v6 trans connection in firewall verses ecm for v8 I want to do this swap. I’m subscribing! Goons watch your other videos on g8
Sorry, I dont quite understand the question. The v6 trans computer is separate from the engine computer in the v6. In the v8 one computer controls both the engine and trans. Did I get close?
So will it make my v6 faster ?
.
what else was needed to complete the whole v8 swap(i’m trying to gather parts) and what did you do about the vin, I heard that’s the biggest problem.
We swapped the fuel system, rear differential (optional), replaced the driveshaft carrier bearing (worn out), exhaust, there is more but a lot of it is replacing worn out existing parts like wheel bearings, brakes, etc.
Did you keep the v6 part of the harness that comes from the cabin to the engine bay fuse box or did you swap it to a v8
Swapped to V8. Access through passenger side kick panel and pull out the glove compartment.
@@CarswellsCustoms thanks. Almost finished the swap.
@@hsv_vixs3165 Awesome, let me know how it goes.
Great vid man, I'd like to swap mine out over time. If you never gave the harness away what's the price?
I have a complete v6 to v8 wiring harness swap with computer for sale on FB marketplace. Let me know if you are interested $1000.
@@CarswellsCustoms do you still have the harnesses for sale? Or know a good source for them?
@@mrhalcyon22 Yes I have one available.
@@CarswellsCustoms Are you still selling the harnesses with computer?
@@TheSpeedemon87 Hi, I have 1 left in my garage. Email me at mymusiconmyiphone@gmail.com
I'm swapping in a 03-04 LQ9 into my V6 G8 any chance you would no if all the GT wiring would still work sence it's not a L76?
Initially the first obstacle is if you purchase all the G8GT wiring harnesses and computer, the G8GT computer requires the 58tooth reluctor wheel. Make sure your LQ9 has the 58tooth, I am not familiar with that year so I would research that first. Let me know what you find out!
Question, would it be easier to just buy a wrecked gt with intact engine and wire harness and swap it over to the v6 or to buy a pulled 6.0 with the harness, i assume programing would need to be done to retain gauges and factory components
It depends on availability of parts. When you swap harnesses and computer from v8 to v6 the gauges work fine. I have a complete swap harness and L76 in my garage. Email me at mymusiconmyiphone@gmail.com
@@CarswellsCustoms sent you an email
Can you use any ls ? 4.8, 5.3 ?
Sorry, I dont understand the question, but this harness and computer can be applied to any 2005 and up LS with 58 tooth reluctor wheel but not direct injection of course.
I have used everything to complete the v6 to v8 swap for the Pontiac g8 but running in to trouble with fault lights and cannot communicate with data link to program anything really need help I got everything for the built this just my problem I'm having
Hi Benjamin, I have not run into this problem before but I would first start by checking all grounds in the factory harness and especially check the PCM grounds. The ground on the back of the driver side cylinder head is super weak and breaks all the time. You may have to trace the data link wires back to the ECM from the OBD2 port looking for damage. Once you get the data link going, you can turn off the VATS in the engine computer using HPTuners.
Big block crown Vic,dump that 4.6.
Hey do you sell stock v8 g8 harness?
@AQcheapgearhead I believe I am listing one next week along with other G8 parts. I will update you here with the link when I get things sorted.
@@CarswellsCustoms ohh thanks I have been looking for one for a long time
Still got a harness for sale?
Sorry, no. Check FB for G8 Part Outs.
@@CarswellsCustoms should I use a gt g8 harness?
@@renezaragosa3946 You betcha!
hello how are you plz i have hummer h3 2006 v5 3.5 l with E40 ECM if i find v8 gn4 with E67 Ecm and harness i can put it on my h3 and work properly all gauges and ABS and traction control? and transmission sure i wanna make changes in the 4l60 to v8 ...
I have not completed that swap yet so I cannot tell you that it will work with certainty. You will have to know the exact engine and transmission combination that came in the V8 version of the H3 stock and reluctor wheel count on the replacement engine 58x or 24x and compare. My first step if I was going to complete this swap is look up AllData DIY.com, purchase subscriptions on the v8 and 5cyl version and compare harnesses. I cant imagine GM making it too difficult to have different drivetrain in different models as having dissimilar platforms costs more money. Good Luck and let me know what you find out!
@@CarswellsCustoms yes i understand i wanna change the engine harness and ECM but somthing wrong with me between the ECM 3 ports J1J2J3
@@rockabichebel Sorry I dont have a schematic downloaded so I dont really know how to help.
So all I have to do is install the 2 harnesses in the engine bay and drop my 6.0 L76 engine in with PCM & will it run or is there more to be done inside the vehicle as well? Please let me know at your convenience, thank you!
The 6cyl positive battery cable is shorter than the L76 so that will need to be addressed. The engine mounts and rubber isolators need to be from an L76 car. But inside the car all the connectors are the same except the v6 has a separate transmission controller that needs to be unplugged to remove the v6 wiring harness. To run the chassis harness through the firewall remove the windshield wipers and the plastic cover beneath them along with the heater/ac box that is bolted to the firewall. The v6 harness is a pain to remove so use some patience as there are retaining clips that keep the v6 harness in place. I hope this helps.
Thank you very much!
@@jasonpreucel9839 You bet, let me know if I can help further.
@@CarswellsCustoms hi, just had a question, If have the harness is completed and through the firewall , what else is needed to plug inside the vehicle
Can I still use the V6 interior harness and plug in, don’t understand about the transmission harness inside of the vehicle where it comes through the firewall? Please let me know if I will need further wiring harness inside the vehicle or can I plug and play so to speak, you’re help and video helps! Thanks!
Can I put a ls 5.3l in my v6 g8 or is it not worth the time should I hold out for a 6.0l
Answer Part 1: In my opinion all the LS series engines are great because of the head designs are super efficient. You will get more torque with the 6.0 but prices are better for the 4.8/5.3. So lots of variables and everyone has their own opinion and budget. I have built 6.0 5.3 4.8 and taken molds of the cylinder head intake and exhaust runners along with the LSX race heads. You would be suprised how similar the production heads are to the LSX heads. Heads are horsepower and all the LS engines got the goods.
Answer Part 2: If you want the factory gauges and the G8 GT computer to work with the 5.3, you will need to change the reluctor wheel on the 5.3 from a 24 tooth to a 56 tooth. That requires complete disssassembly of the engine. I keep a 4.8 crank in my shop with a 56 tooth already installed. Since this can be a pain in the ass, it may be better to purchase a later model engine that has the 56 tooth already installed. BTW, dont buy engines from people you dont trust, dont buy without hearing run, or dont buy without a warranty that has enough time for you to actually complete your project inside the warranty timeframe. Great engines but when they are overheated the heads do crack on the top of the head in the area of the rocker arm bolts.
Thank you so much for the info and knowledge.... people like you make the world keep turning
@@tylerwalczak1294 No worries bud, its good to be able to pass on quality knowledge instead of getting unknown peoples guesses from an online forum.
Will my 4l60e trans hold up to a v8 swap?
you still giving away the wiring harness ..lol
I have a complete v6 to v8 wiring swap for sale. Email me @ mymusiconmyiphone@gmail.com
So do you need to remove the body harness
.
Do the boat it would be better
Yes! Thank you!
Wish I was the 100th
Yes, if you check FB Marketplace you can reference the wiring harness numbers that I provided and lots of people are parting out G8's. It makes parts shopping a lot easier.
@@CarswellsCustoms where are these part outs your refering too cause i cant find anyone
@@Sloan3 Join a G8 FB group or dedicated G8 Parts group. That is where I found the harnesses. Also do a FB Marketplace search of "G8 Partout". Be sure join groups that are not in your state as shipping is cheap compared to not having all the parts. GM discontinued the harnesses so it will be a bit tough to accomplish. But hell, nothing worth doing is ever easy!
@@Sloan3 I just did a search for "G8 Parout" and in Taylor, MI there is a computer, engine harness and main harness for $200. The title is:
2008 G8 gt ecm and engine harness and main harness
@@CarswellsCustoms hey man, that guy did get back too me and its on its way, your the man
Where can I get the whole harness? I’m going to swap a 5.3 in a base g8 v6. What other electrical components would I need to make the swap? Thanks in advance
Unsure where to find harnesses, check Marketplace for part out G8's. G8GT PCM, BCM, and the harnesses for the swap.
@@CarswellsCustomsso engine harness, pcm ecu, bcm from a g8 gt and just swap in and swap out the v6 stuff?
@@CarswellsCustomsWhat other harnesses?? Can you give me a complete list
@@drufetti510 The part numbers required are in the video description. What is in the video is all I used.