Gauges, power windows and locks not working, also intermittent service lights on

Tiny
BILL GEORGE BERNDT
  • MEMBER
  • 2010 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I have the SUV listed above which I had driven daily with no issues and I drove it 400 miles the day before it presented with the following problems. Codes U0109, U0102, and P1682 no run or start, intermittent dash lights, ABS, traction control, airbag and security light also no power locks or windows. I checked all of the ground and power connections. I also took the fuse boxes and relays apart and cleaned them and checked for corrosion. I replaced the battery, ignition switch and lock cylinder. Still the same problem. I towed it to the closest dealership which was 100 miles away, they had it for a week and then called me and said they couldn't figure it out. I went to they're shop in hopes of asking the mechanic what tests they had done and they said it was a wiring problem and they inspected all the wiring and they didn't know what was wrong. So $400.00 and I had to tow it back home. I replaced the ECM and the BCM with aftermarket replacements preprogrammed to the VIN. Now it will start and run, but it still doesn't have any gauges no power windows or locks and has the same intermittent service lights on. It has no codes which I expected being as the computers were replaced. I was dumbfounded when the dealership said they couldn't fix it! I have only lit driven it because I am afraid it is going to quit running again and I really don't trust it without the gauges working. Any suggestions will be greatly appreciated. Thank you
Do you
have the same problem?
Yes
No
Thursday, February 4th, 2021 AT 10:04 PM

7 Replies

Tiny
KEN
  • ADMIN
Lets check for power at the BCM fuse in the interior fuse panel. here is a guide to help and the fuse location a well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Wednesday, February 10th, 2021 AT 10:02 AM
Tiny
BILL GEORGE BERNDT
  • MEMBER
I replaced the under hood and instrument fuse boxes with new GM parts and all new fuses and relays.
Was this
answer
helpful?
Yes
No
Thursday, February 11th, 2021 AT 8:41 PM
Tiny
KEN
  • ADMIN
Okay, do you have power at the BCM fuse did you use a test light?
Was this
answer
helpful?
Yes
No
Friday, February 12th, 2021 AT 11:08 AM
Tiny
BILL GEORGE BERNDT
  • MEMBER
Yes, there is power and ground. And I did a continuity test on the wires.
Was this
answer
helpful?
Yes
No
Friday, February 12th, 2021 AT 6:59 PM
Tiny
KEN
  • ADMIN
It sounds like the PCM or BCM has not been programmed correctly. to be sure lets do a CAN scan which is the future of automotive repair. you can get a CAN scanner from Amazon for about $50.00. here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2021 AT 11:31 AM
Tiny
BILL GEORGE BERNDT
  • MEMBER
I have an Autel AL329 scanner will it work to do a computer area network scan?
Was this
answer
helpful?
Yes
No
Friday, February 19th, 2021 AT 2:28 PM
Tiny
KEN
  • ADMIN
Check to see in the information page of the scanner.
Was this
answer
helpful?
Yes
No
Monday, February 22nd, 2021 AT 6:47 PM

Please login or register to post a reply.

Sponsored links