LML Possibly BCM failure

Codylml14

New member
Oct 30, 2018
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A few months ago my I started my lml from my phone before work to warm it up. I get outside and it isn’t running. My key fab wouldn’t work either. Open the door no lights dinging or anything. Turn key on and start the truck. No gauges work. No radio/nav works no windows . All the lights and messages come up on the dash besides the check engine light. Finally get to work and park . Shut it off and now won’t start back up and still showing all the messages on the dash yet no working gauges or any electronics inside the truck besides the ac controls . I’m thinking it could be the bcm .. anyone have any input on this?
 

Codylml14

New member
Oct 30, 2018
3
0
0
Tried that. Worked once and it started. All messages still showing and no gauges .then got it home and same thing.. wouldn’t start again. Tried disconnecting batteries for a half hour and still nothing
 

2004LB7

Well-known member
Dec 15, 2010
6,462
1,815
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Norcal
Chect the large bale connector for loose or retracted pins. And check for any dirty or bad grounds, I think they are on the A pillers under the trim or something