2014 Sierra SLE BCM issues

[67-LM7-910]

I have been trying to figure out an ongoing intermittent BCM issue with my truck. 

 - first the parking sensors stopped working, got replacements and still non functional. don't really care about these as I disable them anyhow.

- second the TPMS sensors intermittently stop working and if these go out then

- the third issue which is theeee most annoying issue is the remote entry fob does not work - this is my major desire to trouble shoot this. 

 

When i scan the truck with an XTool scanner noth8ing shows up, i can function most things which i have been able to sort through but no luck yet. 

 

Has anyone had wiring issues? broken wires or broken insulation leading to ground out? or could it be the BCM itself?

[silveradosid]

the tire pressure and remote lock are the same module and send the information to the bcm. the module is in the rear right  above the headliner, the wiring runs along the floor on the passenger side

[drinkswear]

On 2/21/2025 at 4:59 AM, 67-LM7-910 said:

I have been trying to figure out an ongoing intermittent BCM issue with my truck. 

 - first the parking sensors stopped working, got replacements and still non functional. don't really care about these as I disable them anyhow.

- second the TPMS sensors intermittently stop working and if these go out then

- the third issue which is theeee most annoying issue is the remote entry fob does not work - this is my major desire to trouble shoot this. 

 

When i scan the truck with an XTool scanner noth8ing shows up, i can function most things which i have been able to sort through but no luck yet. 

 

Has anyone had wiring issues? broken wires or broken insulation leading to ground out? or could it be the BCM itself?

Sprunki Game

 

 

Since the TPMS and remote key issues are related, try the following:
- Relearn the TPMS sensor using the truck's relearn procedure.
- Test the remote key with a spare key (if the spare key works, the problem may be with the remote key itself).
- Test the RF module (if separate from the BCM)—some trucks have a standalone receiver for remote entry

Edited February 26, 2025 by drinkswear