2003 yukon

[Dfrank]

No lights on dash. Everything else is working. I replaced bcm n checked to see if everything is getting power... I'm lost.. still nothing when I turn key

 

[Scottydoggs]

a bcm must have your vin# to work. so likely not the bcm, as it dont have a thing to do with the key and what it does. put the original one back in.

if its not starting could be a dead starter, bad ground, bad battery cables dead battery.

if just the cluster is not working check fuses. and the dimmer wheel. if that got turned down you get no lights to anything on the dash.

 

[Fless]

Are you talking about the backlighting, or the indicator lights (turn signals, ABS, etc.)?

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

Please give us some additional information regarding your issue, so that folks here can help you resolve it.

 

[Dfrank]

Are you talking about the backlighting, or the indicator lights (turn signals, ABS, etc.)?

Turn signals, engine light. Etc..

 

[Dfrank]

a bcm must have your vin# to work. so likely not the bcm, as it dont have a thing to do with the key and what it does. put the original one back in.

if its not starting could be a dead starter, bad ground, bad battery cables dead battery.

if just the cluster is not working check fuses. and the dimmer wheel. if that got turned down you get no lights to anything on the dash.

It originally cut off on me while driving

 

[Dfrank]

It originally cut off on me while driving

Hooked up the diagnosis machine.. reset all codes. Everything passed, but still not recognizing the bcm

 

[Fless]

Is the new BCM flashed to the VIN? Have all applicable fuses been verified as good?

 

[Scottydoggs]

It originally cut off on me while driving

BCM has nothing to do with the engine at all. its the body control module, its the brain for the inside of the cab.

PCM is what controls the engine and tranny. power control module.

 

[Dfrank]

So would the pcm give out and the truck shut off while driving?