Instrument cluster does not light up

Tiny
SSROBERTSON
  • MEMBER
  • 2000 GMC SIERRA
  • 4.8L
  • V8
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I cannot get the instrument cluster to light up mileage, security, fuel level and temperature gauge. The voltage, speedometer, tachometer (I think), check engine light all come on. I bought a new body control module that was already programmed to my VIN and it does the exact same thing. Even swapped used gauge cluster from the junkyard and it does the exact same thing. I'm at a complete loss on this thing and just need some help. Thanks in advance for any help that can be given.
Do you
have the same problem?
Yes
No
Monday, May 3rd, 2021 AT 6:33 AM

13 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning again,

I attached a wiring diagram of the cluster for you to view.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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

I also attached the connector. Check the pins I circled for power with the key on. If there is power, then the cluster is the issue. If you are missing power, then it is a wiring issue to the cluster.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 5:23 AM
Tiny
SSROBERTSON
  • MEMBER
Thanks Roy, after testing pins above I found out that the orange wire was not getting power. Once hooked up the gauge cluster is now lit up correctly. The only issue now is that when I shut the truck off, the mileage screen and battery light is staying on. Was the orange supposed to be a constant on, or should it be a switched power?
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 5:52 PM
Tiny
ASEMASTER6371
  • EXPERT
It is battery power. It should have voltage all the time.

Did you get power to the orange wire?

Roy
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 5:59 PM
Tiny
SSROBERTSON
  • MEMBER
Yes, I piggybacked it on another wire that has constant on.
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:02 PM
Tiny
ASEMASTER6371
  • EXPERT
Okay, I would have fixed that instead of that repair. Did you check the fuse for power on both sides for the orange wire?

If you have power now and the speedo does not work, then the issue is inside the cluster.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:14 PM
Tiny
SSROBERTSON
  • MEMBER
I checked the fuse and it had power on both sides. So when you say you would have repaired it, are you meaning run a new wire from the fuse block to the cluster? I can do that if it's what you recommend. I'm not sure if the speedometer is working due to it's not running and driving yet (still need to run that new fuel pump wire, lol).
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:19 PM
Tiny
ASEMASTER6371
  • EXPERT
Correct. You have overloaded another circuit with your repair.

Run the new wire and make it correct.

Keep me updated on the rest.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:30 PM
Tiny
SSROBERTSON
  • MEMBER
Okay. I will keep you posted sir! Thanks for all your help again Roy!
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:32 PM
Tiny
ASEMASTER6371
  • EXPERT
You are welcome.

Always glad to help.

Roy
Was this
answer
helpful?
Yes
No
Tuesday, May 4th, 2021 AT 6:39 PM
Tiny
SSROBERTSON
  • MEMBER
I did not get a chance to run new wires today. But I did verify that the speedometer is working (jumped the fuel pump off the battery to make run). But the message center and odometer lcd are staying lit up with the truck off.
Was this
answer
helpful?
Yes
No
Wednesday, May 5th, 2021 AT 5:09 PM
Tiny
ASEMASTER6371
  • EXPERT
Back to the cluster itself.

Roy
Was this
answer
helpful?
Yes
No
Wednesday, May 5th, 2021 AT 5:14 PM
Tiny
SSROBERTSON
  • MEMBER
Ok. Sounds good. Definitely making progress, and I may even get this thing done and not burn it to the ground (that's where I was at with it before your help lol). It's a project but had me stumped. Couldn't have done it without you Roy! As always I will keep you posted.
Was this
answer
helpful?
Yes
No
Wednesday, May 5th, 2021 AT 5:17 PM
Tiny
ASEMASTER6371
  • EXPERT
Sounds like a plan.

Roy
Was this
answer
helpful?
Yes
No
Wednesday, May 5th, 2021 AT 5:19 PM

Please login or register to post a reply.

Sponsored links