What is th ecauses of electrical issues with GMC Sierra 1500?

Asked by drmoorejr Dec 04, 2023 at 10:35 AM about the 2018 GMC Sierra 1500 SLE Double Cab 4WD

Question type: Maintenance & Repair

2018 GMC Sierra 1500 5.3l 4x4 SLE.  Dash and touch screen go blank and door locks cycle with going over a bump in the road. The batter was replaced and new battery cables installed by dealership technician. Also new rear turn signal wiring harnesses replaced.  The problem still exists.

1 Answer
307,225

Gene answered 4 months ago

Sounds like a BCM problem, could be a harness, grounds or the unit itself.

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