2005 Corvette - Fixing cranking/no start issue
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- Опубликовано: 14 фев 2017
- I was having a sporadic no stat issue with the Corvette.
The car would try to crank - but wouldn't fire off.
I researched the issue on Corvetteforum.com - and it turns out there is a common problem with the wiring under fuel pump relay.
I had replaced the relay - but that didn't permanently fix the problem.
In this video I take the fuse panel apart - and find the fuel pump relay pin pushed down into the socket. I pushed the pin back up - and put everything back together.
Thanks everyone for all of your support!
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Craig BonecrrusherSS
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My Z06 had been in the shop several times for the same issue. Watched your vid and was back on the road in 30 minutes. Thank you!!!
Glad it helped! I have seen some folks put some solder on the end of the wire to give it more contact area - but I haven't had an issue since I pushed that pin back in.
This was a life saver, you ended an absolute saga chasing this issue! Thanks fam!
Glad I could help!
You're a hero around here. My fuel tank read empty, after running the codes, it recommended to replace the fuel sensor relay. However, after watching your video, I changed out all larger fuses, cleaned out one of the harness terminals, now it works.
Great job! That is a whole lot easier then dropping the tank!
Run a can of Techron through the tank - that is a recommended cleaner to run through the system.
I just had the engine light come back on after two weeks, maybe my plastic of the panel can handle the heat of the engine? Any part numbers for me so I can get a replacement. GM did a headlight recall on the fuse box or fuse panel, but didn't put any new plastic replacement parts. I'm guessing that plastic warp and still warps when it gets hot. Any ideas?
thanks for the info that you provided. I read about this issue a few years back about the c6 problem with the fuse panel. heat, vibration, and the elements.
I just fixed mine last night finally. It was losing fuel pressure/pump even at highway speeds. 😬 So I got in there and bent the pin. Mine looked exactly like yours. I added a small section of braided wire and stuffed it behind the pin to give it a little extra support. From the rear. I also brushed the contacts to expose fresh metal. Thanks again!
Nice work! Glad to see it helped out.
I haven't had any issues since I pushed the pin assembly back together a couple years ago.
I talked to you before when having this problem and I just took the relay out and pushed it back in and it started.
Then...it started doing it again and a wiggle would sometimes work but it finally just died.
So I watched this 10 times and took my box apart and sure enough the little plug was pushed down. I pushed it back as best I could and now it works.😊 I am going to replace that plug, or maybe that modular come springtime after the snow melts.
People have either replaced the pin, maybe put some solder on it. There might be something else - but tbh it's been years since I looked up the fix.
I was having the same issue on my 2005 c-6.....I watched your video and checked my relay and yep....looked like yours.....got a new one and is working fine....thanks for the video and help!
Glad it helped out!
Hey are there replacement pins for this issue with the c6 fuse box fuel pump relay?
Thank you very much for this detailed descriptoin of the C6 Starting problem. Very interesting. Thank you again!!
No problem David. Since I fixed that pin, I haven't had a problem.
SIr, My Vet died at a vacation spot in Galveston Texas and we had it towed to a Chevy dealership in Texas CIty. I told them of the problem you had but they did not listen and they "fixed" it by replacing the starter and some other stuff at $1300. A week later it died at an elementary School in Kemah. I was furious and let them know their incompetence and told them about your fix and when i got it back they said they "fixed" it by replacing the bad battery and promised the problem had been solved. When I got home I checked the fuse box and all the fused had been replaced. Apparently they listened but would not give you the credit!! Thanks again!!!
that works out well for me. thanks again brother.
Glad I found your video. I'll dig further into mine. Thanks!
Hope it helps!
I am having the EXACT same issue with my 2011 Grand Sport with Edelbrock supercharger. I sent this video to my friend (who also is a mechanic). I hope this does it for me. I too am tired of missing events, ie car meets. Thanks for the video!
Hope it helps out!
It was exactly the problem. The short grounded my pump which needed replacing as well. She's all good now thanks to your video!
jnrandall where was this short located at?
bonecrrusherSS my corvette has the same issue , sitting in my garage
Having the same issue but the bottom portion of the block is melted pretty bad. Do you think the fuel pump issue is the real issue? Do you know where to find the parts for that fuse block?
Thanks for the video brother
Appreciate the info.
awesome video, thanks for posting this out. I'll see if mine has the same issue and I'll update you later for the result.
I fixed this about 3 or 4 months ago - and haven't had an issue since.
Let me know how yours works out!
Thanks for the video, i'm having the same problem but no cranking over. i did find my fuel relay looked toasty, replaced it but no help, dash isn't displaying any problems and put a meter on the newer battery.. gonna go over the fuse box like you did, thanks again for the video, will let ya no what i find.
Check out the fuel pump wiring under the fuse box.
The pin may have backed out of post that the relay plugs into.
@@bonecrrusherSS After replacing the relay i disconnected the battery for about 5 minutes and it started right up, only after i disconnected the battery, i tried after replacing the relay but for some reason had to do a full reset.
i have't takin apart the fuse box yet but will soon.
Are you having any Service Column Lock issues?
@@bonecrrusherSS It has displayed service column lock when i had a weak or bad battery. This time it never did display anything on the dash with the new battery, but id did get down to 9 degrees the other night, could have effected the solenoid?
Racetronix hotwire harness is where it's at. Better pump performance from higher voltage, and you negate this problem because your higher current part of the circuit is now just used to trigger the relay so it no longer has that higher amperage load on it. The load is taken directly off the alternator.
I have had that harness in the car for years. Still had the no start issue even with that harness.
l bought a replacement relay, put it in, worked, then didn't work, put the original back, started, then didn't start unless I swapped again..bought another from a different parts store, and the same, same, same.....Now, will follow your video tomorrow and see if i can fix the damn thing, so annoying...BTW, couldn't find this on the Forum!l RayJ. Longwood, Fl..C6 2005
This is what I googled: c6 corvette cranks but wont start
I'm still having issues, sometimes driving the interstate at 80mph, dies, and coast to a shoulder. Sometimes, sitting at a light, dies (the worse). I solderd a small bead onto the mail leg that goes into the grey box connector, no issues for a week, then it died again...So, on the side of the road, I disassemble the box (now I can do it in 3 minutes), noticed the solder bead was brittle and fell off the male leg, so I took my pliers and bent the leg a little towards the passenger side of the car so it would make better contact to the connecting pin, started, but afraid to trust it, but what choice do I have! I found out that the grey box that contains the recessed pin is the "engine harness" and to try and buy just the grey block so to knock it apart and grab a decent pin to replace the worn out one is not working out. Used parts guys want $300+ for the harness with the "pin box" or GM wants $500+.
Tomorrow, I'm going to bend the corresponding male leg a bit more, and Tuesday I'm driving 1000 miles to St. Louis, and what ever happens, happens.
I wish we could hear from others who have "officially" resolved this issue! One video, a guy spliced into the four wire corresponding with the 4 legs to the relay, and set it Outboard of the fuse panel, bought a heat sink that would take the size of the relay, added a 20 amp in line fuse and had not heard back if all is good after so many months...Very little room for splicing wires. BTW, my relay gets super hot, wonder if his solder is holding up? Again, an update would be great....
In case someone got this thing figured out, please e mail me your fix...yyzazz@aol.com....Also, when I return from a 2500 round trip to St. Louis, I'll update my situation. RayJ
I’m having the same issue on my 2006 Z06. Happened a few times intermittently over the past few years. What a pain in the ass! Only difference is my relays aren’t super burnt but there is some discolouration. Inside where the pin is it’s not discoloured but I noticed the pin has a bit of movement. There’s got to be a permanent fix for this..??
GM HAS CHANGED THE FUEL PUMP RELAY FUSE ALREADY FOUR TIMES SINCE 2005. Today in 2020 the fuse part number has been changed maybe they found out it was a problem. Mine had same toasted burnt look on both AC RELAY AND FUEL PUMP RELAY
Did you take apart the fuse box to see if the fuel pump pin had pushed out?
great video !!...how do you like that lift ??...hopefully when I retire to Florida in a few years I'll get one got my 2001 C5 !!
Thanks Rob!
Lift has been a life saver - not only on time but also just getting up off of the floor - it makes working on the cars sooo much easier!
I don't know what State you are in but I understand the lifts in some you need to have them approved...correct ??....do you have a 10 foot or higher ceiling ??
I am in NC - and no permits or approval needed.
My garage height is about 10 feet - I can lift the Vette and SS all the way up with no issue.
Great !!...thanks for the info....hopefully will find a house in FL with a 3 car garage AND a 10 foot ceiling...LOL !!!
Thanks Bonecrusher, your diagnosis worked for my 2006 C6 Z06 and she fired right up.
But pulling/pushing the connector out to re-bend the tab end on the thick brown wire, may have damaged the plastic slot it fits into the Plastic Grey Panel piece and it is not holding the connector as tight any more. So I may have future problems? I'm going to look for some spare wire connectors to have as a backup.
I pushed it back in 5+ years ago and I haven't had an issue since.
I spent about $1000 getting a new bcm installed. Now having this issue again. I'll try this and see if it works. Hoping it will I have the same exact symptoms you're describing.
Good luck!
I have the same exact thing happen after I had the BCM and starter replaced 6 months later it's not working
I bought the crimp connector from Napa for like $1. I had to extend the wire 1 inch with speaker wire. Soldered the thing together. So far so good.
@@daytraitors387 which wire and used speaker wire to what
@@Wakanda1000 it's hard to describe "which wire" other than "the one that looks burnt." once you cut it, it's hard to reconnect since it's got no slack. add a 1" pigtail using stranded copper wire, at least 16ga, but 14ga may be better.
I have what I think it this exact same problem except I have it on a 2006 Cadillac XLR. I disassembled the fuse box and had a noticeably depressed connector just like the one in the video. But I can't seem to get the connector to stay in the proper place. I put it back together and it works for a bit, but after a day or so, I get the same cranking/no start issue and when I look again, the connector is back depressed down. How did you get yours to stay in place? Any suggestions for how I might? Because just pushing it up doesn't secure it. It just gets pushed down again.
You can either replace the grey plastic box that the wiring sits in - or you can add some solder to the top of the pin. I haven't had an issue since - but I did buy a replacement grey box for when this happens again.
I bought a relay fuse I thought that was a problem on my vette ..but that didn’t work ..I check my battery was low ,charged the battery up and walaaa its start getting me a new battery today ..Good video though
The electrical systems on these cars suck - weak battery will cause a lot of problems.
So I was having the same issue... replaced the relays.. did not fix it.. tried to remove the box like u did but it was being difficult so I just put it back together. Tightened the bolts .. fired right up... my question is how do we prevent this issue from happening again.?
Some folks have had luck just wiggling the box wiring.
I haven't had mine back out in a year. You can add solder to the pin surface and or replace the grey box the pin sits in.
chris Hodges you should not have to remove the two 10mm bolts as those simply hold on the piece housing the wiring harness connectors. Just remove the power wire to the box and then loosen those 7mm bolts inside the relay box. They don’t come out but you have to turn them enough to release them from the wiring harness connectors. You keep turning them and at some point they will feel as though they are tightening again, keep turning a bit more and at some point you will be able to lift up on the relay box and it will detach from the connectors. If you cannot lift up the box then you have not loosened the 7mm bolts enough.
Hello- same issue with my 2012 GS. I just can't figure out how to remove the fuse box to expose the connectors. How did you do it? I can see the green tab on mine but it's so deep on the side and can't pry it out. How did you access the green tab? A little help will be appreciated. THank you so much.
Remove the 4 or 5 bolts from the top - remove the top half and expose the plastic junction boxes below it.
To split the grey connector - lift up on the tabs and it will split apart.
That green tab just holds the wires in - and should pull out from the side.
I’m having the same problem and I have my fuse box opened up like that and I’ve notice that the pin that you claim is your problem is the ac compressor relay not the fuel pump , just thought I’d point that out, but if that worked then that’s a good thing .
They Grey wire is the fuel pump relay wire.
This is direct from the GM Wiring diagram:
Pin number - A6, Wire color - GY, Circuit Number - 120, function - Fuel Pump Supply Voltage.
gonna have to try this, 2006 c6 sometimes I'm getting the clicking no start battery is good.
This seems to be a pretty common problem - since I pushed that pin back in I haven't had an issue.
I hit a pothole with my front passenger wheel and all the lights from the dash came up and car won’t start anymore any idea what it might be
What year is it?
bonecrrusherSS 07
That eliminates the steering column lock pin. You could simply try to grab and wiggle the wire harnesses going into the fuse panel - and see if that helps. It could be a loose wire.
I ended up doing everything you did; is there a way to make sure that the wire doesn't fall again, i.e., is there anything we can do to "hold" it in place? Thanks! ✝️
I've heard some folks add some soder to the terminal - I think the outside of it. Honestly - I haven't had a problem in 3 or 4 years since I published this video.
@@bonecrrusherSS Thanks! ✝️
Also, one more thing- in the video, it stated all you did was push up on the wire, itself... nothing more than just that? Thanks!
What is the part number for the fuel pump relay?? Same issue here as well
GM PN - 15328866
Check the fuel pump relay.i have posted a video with the title corvette c6 starting issues.hope it solves the problem
Changed my relay no help. Probably taking fuse box apart today.
@@badams1897 what did ya find? i having the same issue
My 05 makes a starter engagement sound but wont start. Did yours do that?
It's probably the fuel pump relay. As shown in the video - take the fuse box apart and push the fuel pump relay wiring back in.
@bonecrrusherSS I can hear the fuel pump working. Starter is engaging and clicking. Doesn't make sense to me but I'll definitely keep it in mind!
Can you wedge the pin and connector with a small piece of foil
I wouldn't. Use something less metallic.
@@bonecrrusherSS thanks man. I watched your video and finally fixed the problem. See you down the road brother
Glad to hear its fixed.
Not a 2005 unless you upgraded the steering wheel lol. What year is your vette actually?
I've upgraded the wheel twice actually - first was the 06+ with steering wheel controls then the 2011+ style with thumb grips.
how do you like you max jaxs
I've had the lift in 2 houses - and really enjoy having it.
No more working on my back!
Did you ever find out what was causing this issue?
The fuel pump relay pins backed out of the bottom side of the fuse panel under the hood.
I've had to fix this twice now by taking the fuse box off - and push the pin back in - I need to find a better way to fix this.
bonecrrusherSS I’m in the same boat. I wonder if it’s a fuel pump problem that causing it to do that or what. I’m going to replace the whole block next.Hope that fixes it or I guess I’ll keep on digging. Are you running a boost a pump by chance?
Ever find a perm solution?
The second time when the car wouldn't start you let your finger off the start button and it continued turning over, that tells me that you only have to press it one time and release it everything else is automatic. You do not have to hold the button in until it starts the computer does that in the same manner I do not have to touch the gas pedal when starting my C5 ZO6. Just for the record ¿`_
C5 and C6 have completely different starting methods - and the c5's don't have this issue of the fuel pump relay pin backing out.
@@bonecrrusherSS that wasn't my point. You don't have to hold the button in to start your car. It's a momentary switch. Like most people you didn't read your owner's manual ¿`_
I did this and now my whole car don’t wanna get power 🤦🏽♂️😂
Did this 6 years ago - no issues.
@@bonecrrusherSS i actually bought a new fuse box and mines started up with no issues and hasn’t given me this issue ur video helped thanks 🤙🏽
Here is how I fixed it: ruclips.net/video/gSUi5Dj5r-s/видео.html