FSCM Diagnosis GMT-900 Fuel System Control Module GM Trucks
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- Опубликовано: 25 окт 2017
- Replacement FSCM 07-09 Online Ordering-
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In this video, we are going to cover the proper diagnosis of the Fuel System Control Module. You will need a test light or a power probe to test for power at the connector.
Also, the common code seen with FSCM Failure is P069E. The fuel System control module requests MIL illumination.
With the Key on you will need to test for power at
Pin 13 Dark Green and White Wire
Pin 15 Pink Wire Ign 1 voltage
Pin 32 Red and White Wire
Check Ground at Pin 1 Black Wire
If you do not get power at the above circuits please check for broken wires, blown fuse, relay or bad PCM/ECM.
We Sell brand new FSCM, FTCM and ITBC Modules Programmed to the VIN Number of the truck requiring the replacement.
FSCM 07-09 with free shipping
ITBC Modules are Also available as a relay kit.
All Module Prices include free shipping.
Please call 636-795-6960 to place orders or use the web links below. ⬇️
DIY Diagnostic Procedure
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Connector Parts
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Please note on the green and white wire
IMPORTANT GREEN/WHITE WIRE CONDITIONS
CHECK FOR ONE OF THE FOLLOWING THREE CONDITIONS 1. CONSTANT 12V POWER 2. POWER ONLY WHEN CRANKING 3. POWER FOR 3 TO 6 SECONDS WITH KEY ON. WIRE/PCM INTEGRITY PASSES IF ANY OF THE THREE CONDITIONS HAVE BEEN SATISFIED.
Spartan Autoworx, LLC
636-795-6960
Diag-
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Eric, man you are a life and 💴 saver!! My 08 Yukon Denali had an issue where when you turn the key to the on position the fuel pump would stay running non stop till you turn key off. Been like this for years. Then one day while driving my truck it started missing out of the blue for no reason then the engine hit ac turned off message came on but truck wasn’t running hot, then all of a sudden while at home a month later my truck wouldn’t start due to no power to the fuel pump. Now I assumed all these problems where major issues. Watched all your videos and ask you questions and you quickly replied and directed me to needing a new ECU. I ordered one popped it in and did the key relearn steps, the the crank sensor recalibration and bam back running with no issues!!! Just want to thank you all the way from Mississippi!!!!
Glad I could help you. Hope to earn your business in the future.
What did you use for the relearn process?
Ordered a module plug n play no problems at all I would recommend
Hey man I'm looking for a pre programmed module online, I can only find (needs to be programmed) do you know where you got yours? Thanks in advance!!
I can't reply it keeps deleting my msg
Ur video helped me alot
So i crossed the pink wire and ground wires like u said and my fuel pumped primed and it cranked right up but does not work when plugged back in with that being said im going to assume my fpcm is bad correct?
Sounds like it. As long as the green and white wire looks good as well. Check out gmflash.com/fscm-diagnosis
Wanted to give a little feedback, having/had intermediate p069e code,resulting in crank no start.
Ordered programmed FSCM, plugged it in, started right up, spins like a kitten, so looks like programming worked great and unit worked straight out of the box (as promised). Have to keep fingers crossed that code wont popup again and leave me with a crank no start, time will tell. Would also like to warn others, i had a hard time figuring out the bolts and destroyed them on the process. The bolts holding this unit in, have a large head on the inside (you cant see), from the bottom you can only see a small torx, you have to turn these clockwise ("tighten") so the head on the inside loosens up and you can slide the unit off.
Facts man. I had to figure it out on my own
@@chrshuston What did you end up finding out as a solution?! Been trying to figure It out on my own for about 3 weeks now...stupid thing
Hey man, I'm looking online for a fuel pump control module that is pre programmed, do you know where you got yours? Thanks!!
What is the cost of FSCM for 2014 GMC Yukon XL…thanks
Having this same issue with my truck trying to diagnose what it is, this video helped greatly, but I don't have power to the green and white wire. Where does that come from and what can I do to check next?
I can help but can’t leave my contact here
Nice
Thanks y'all
I also have the same trouble code on an 08 Silverado. Trucks running but my fuel rail pressure is 92 psi... I replaced the little in line sensor. Im thinking its this fcm how about you?
I would say bad module. Always the module never the sensor lol
Hey Spartan, I drove my 09 Silverado in a snowstorm recently and it was fine. The next morning it just cranked and wouldn’t fire up. I noticed the FSCM #21 fuse was blown and keeps blowing if I plug in the FSCM connector (it doesn’t blow if I leave it unplugged)
I followed the diagnosis of the FSCM from the video, I have power to the wires you show in the video, I also jumped the main pins on the FSCM connector and my fuel pump primes up. No codes
Does this sound like a bad FSCM? Thanks in advance
Sounds like bad FSCM
When I touch pin 32 on the harness with my test light I get nothing. I also get nothing on my fuse at fuse 21 (fscm) at the fuse panel. I can however jump my fuel pump from the fscm harness. I have a 2013 Silverado 1500 with 65390 miles on it. I’ve already swapped out the fscm for a new oem programmed one. Same symptoms though. Any thoughts on this?
You need to figure out why you have no power at the fuse box to supply to supply the FSCM
Are you still selling the fpcm, i have issues whit a 2010 gmc sierra?
so I'm going to hope I get a response , this video was great but I feel like I'm missing a piece here. I checked all the wires that you talked about, and jumped the wire connection and all tested good for power (using just a test light) and the fuel pump engaged. My initial code was that I had lost communication with fscm and after replacing with oem part and reconnecting is when I got the p069e, and p0602 codes. I pulled wire connector off and cleaned it with contact cleaner let dry and plugged it back together. It almost fired then it was right back to crank/no fire and the same above codes. Could this be a ground issue? and how do I test the ground with just a test light at the plug?
Pull green seal and connect without it
@@SpartanAutoworx I have tried connecting with out the seal , what should I try next?
@Sean Killough hey Sean have you figured out your issue I'm currently going thru the same ordeal I even put my old fscm back in truck started and then turned it off went to leave and it cranked not start power to all wires except my purple one
After I replaced my fpcm my 2009 traverse starts but now has the Fuel Pump Open Circuit trouble code and seems to start rough then go to Normal. . Do you have any experience with that code?
Sounds like connection issue. Check pins in connector and remove green rubber seal for testing.
This tests power to the fcsm but if the power is there can you test the actual module itself?
Not really
Do 2002 5.3 Silverado have these fscm? Fuel pump isn’t getting power but it’s not located where the spare is
They do not pcm issue or fuse box or bad pump
Where is the other location for the fpcm? I have a 2010 suburban and it is not located above the spare tire so I am wondering where it is.
Front or rear of gas tank if equipped.
do you have wire color to all pins? for 2007 silverado 15213110 is modual#
gmflash.com/fscm-diagnosis
i have the same problem i bought the FSCM on ac delco for a chevy traverse 2014 the mechanic install that on my suv but that code came again i returned to the shop and they said is good now, but after 2 weeks the same code p069e what do you think is the problem?
It’s always a connection issue. Very rarely does a New Module throw that code and it actually be a bad module
omg somebody told it was my fuel pump module wire plug, so i cut it and trying to match up the colors, i got all of them match up, but 4 of them are the same colors i mess u cause i dont no which 4 should match up, like there 2 brown and two brown/black wire i might mess them up sombody says i will be ok but i don't no
Does that green and white wire supposed to have 12volts? I got a 2008 gmc sierra 5.3 and that U0109 and checked all the wires seem good but the green and white one only has 10.8 volts. Truck starts up fine just throws that code right away
As long as it has any voltage it should be passing
@@SpartanAutoworx What else would make that U0109 code come back on? It starts up and runs fine. I had the battery disconnected for awhile. I replaced the fuel pump because it was rusted and leaking gas. Then after scanned it to see what code it had and it was that lost communication with the fscm code
How could i reach you out? This video is hepful but still have some concerns to be clarified. Much appreciated!
Would this cause a p0690 code?
Should they all test at 12 V? The dark green white wire was only showing 1 volt.
Any voltage at the green and white wire should be fine.
@@SpartanAutoworx thank you for responding. I know this video was a few years old and wasn't sure if anyone would. ☺
Can I use a regular voltage tester for this diagnosis?
Yes or a test light
Is there another location for the FSCM? I have a 2007 Silverado 2500HD with 6.0 gas engine. I have looked under the vehicle at spare tire area and have pretty much covered the entire underside of the truck and cant find this part. I have found the 4 port module for the rear tail lights but nothing else. Do you know if there is another location for it?
2500 trucks do not have one
@@SpartanAutoworx thank you very much,
Do 5.3 1500s have fuel pump modules?
My pump wont kick on jumping it over and no power on my green and white any ideal?
SO when you hotwire the pump it does not come on? If so sounds like a bad pump if you have power
Had fuse 26, ECM Fuel pump fuse blow getting P069E DTC code. No breaks in wires or shorts. Thoughts on if it could be the control module?
Unplug module and see if fuse blows if it does not then bad module
My truck doesn't have the trailer break control. If I buy a module that has it will.it still work.
No it will not
Have you ever seen one of these modules cause drivability issus and set a P0628 fuel pump low voltage code? I've been chasing this issue for days on my daily driver that is now parked. Also, the inside and outside lights flicker while its running. Originally I thought I had a failing alternator so I replaced it. That did not fix my issue. Then I went through and cleaned all of my grounds since I live in the rust belt and the frame is crusty. Still no change... I'm sort of lost at this point and I would be grateful for any helpful suggestions. This is on a 2012 Sierra 2500HD with the 6.0 gas engine.
2500 won’t have a fscm
@@SpartanAutoworxare you sure? It definitely has some sort of module up there above the spare. I was underneath the truck tonight. Any ideas on what might be causing my issue? I'm stumped. I don't have a diagnostic scan tool to look at anything specific. Only a basic code reader.
Having a intermediate code p069e, on my 2008 Avalanche, starts fine 9 out of 10 times, leaves me with crank no start the 10th time. Next day go back to it, starts straight up, code disappears after few successful starts. Checked FSCM, unit and connector look great, no sign of moisture or excessive exposure to dirt, anybody any thoughts? FSCM main suspect?
Sounds like bad fscm
@@SpartanAutoworx thanks for your reply, will replace it, thanks
The first pin you tested did not light up on my truck. What do I do next?
Hondo...
What did you find as the cause of the green n white wire not having power, did you find the issue ?
I'm having this same issue with my 09 traverse is why I'm asking you
Joe Bollinger it was the fscm. Then had to find a dealer to program it. It was $84 on rockauto.com for the part and $100 to be programmed
@@hondov1182 I just ordered one for my traverse last night from the same place...im still curious as to why you didn't have power from the green and white wire
@@hondov1182 I had power to that wire only for a couple of seconds I believe because that is the priming mode
I have p0191 and P069E u think it’s module? Car is running fine, at first it was in limp mode and I replaced hi fuel presure pump now its going but have those codes. No idea what to do next. Car was in shop they say fuel pressure is hi on fuel rail, replaced pressure sensor but codes still there.
What’s it on?
Ignition 1 voltage wire with a test light doesn’t light to bright it’s dim..?
if it lights you should be good check with volt meter
Spartan Autoworx I did everything you did but for pin 1 big black wire which is ground I used my test light and it don’t light up..unlessI’m doing it wrong..should I be switching to battery positive on my test light to test pin 1 or just stick alligator clip on a known good piece of metal ?
Pardon my ignorance but how the heck does the plastic wire come off in order to expose wires. Read to break it but I thought twice lol.
I guess mine is slightly different. '15 Cruze LUV but still cant get it to open
On some its in front of the fuel tank
I replace the module on my 07 Silverado,I ordered from you guys and I still have the same code,any thoughts?
What code?
P069E,
Remove green seal from connector and see if it goes away
Thanks for replying,I’ll try that
have you any knowledge and experience working on any Audi Q7 vehicles ?
I do actually. I built a wrecked one and I learned never to mess with another Audi lol
Where do I find the plug, it got smashed in rear end accident, don’t need module
Ditto
Any luck?
Mouser.com
how much is it to program my new fscm from dealer if I bring it to you
07-09 with part number 20759945 is $110
I have an 07 tahoe lt 5.3 and I can’t locate my module and it’s not near the spare tire can you tell me where else it could be
You don’t have one. Starts 2008 for Tahoe
But the reader at autozone said it was my control module
what about 2013 i have one that is failing intermittently gives me po25a
Did you found the problem ?
Hey I guess I’m the only one with no power to green and white wire. All fuses and relays are good, if I jump fuel pump it comes on . For some reason no power at all to green wire. I also followed it up to front of truck and no breaks or touching the drive shaft. Please help, my truck has been for half a year with this
You will need to back probe the computer and verify no power at the computer directly. We have a video that shows you which pin at the ecm. If you have power at the ECM then you need to run a new wire. If you have no power then you need a new computer.
Ok thanks for the fast reply!👍👍👍
Link for that video please ?
When I jump them I hear a click then the wires start heating up
Sounds like bad pump them
I have a 2009 Silverado, it is giving a P069E code from FSCM request MIL illuminate. My trucks runs perfect with the code, no problems at all. Do I need a new FSCM module?
Mine just came on too did you ever figure out the problem
Yes, I bought a HP Tuner and turned off the faulty MIL light really easy.
I am getting code P12A6 and I have gotten the Module Replaced and has not fixed.
Ign voltage at module is low
My ECM 1 fuse keeps blowing. Before it blows the truck will crank but not start. After, no crank no start. Will this test still be beneficial or am I "barking up the wrong tree"?
Wrong tree
Need to find what ECM one fuse powers and see what shorted
What if none have power? Wiring issue??
Power at fuse?
I tested the green and white wire but test light is only on for a few seconds when key is turned on.....that normal ?
mohican joe yes
A very stupid Chevrolet company ... installing an electronic device under the body of the car hi hi hi ... ... when it comes to rain, bye bye