2020 GMC Sierra 1500 electrical problems: dead battery

Dead Battery

2020 GMC Sierra 1500

This problem may be covered under warranty. Ask your GMC dealer.

6.0

fairly significant
Typical Repair Cost:
No data
Average Mileage:
15,250 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. software update for brake module (1 reports)
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2020 GMC Sierra 1500 electrical problems

electrical problem

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2020 GMC Sierra 1500 Owner Comments

problem #1

Sep 252020

Sierra 1500 SLT 5.3L V8

  • Automatic transmission
  • 15,250 miles

A D V E R T I S E M E N T S

Second time In two months that battery died overnight. Jumped battery and left it with nearest dealer, same as before. Same result - battery charged and codes cleared with no clue what is draining the battery. Took it to original dealer across town. They said there “might” be a software fix. Software for brake system module was updated. So far, so good after two days. Dealer said that a few others have the same issue. They pressured GM for a solution. GM suggested the software fix. Stay tuned.

- talltxn, Coppell, US

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