9.1

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
1,914 miles

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problem #1

Mar 222021

Silverado 3500

  • 1,914 miles
The new GM 2021 trailer lighting module and/or system is defective. It fails a pre-connection test with tester, gives "check trailer wiring" warning on dash without a trailer connected and turns off any trailer lighting connected without warning on the road, without blowing a fuse. This problem is much like the tsb report #20-na-198 for earlier models. This issue was addressed by the dealer by replacing the module, but the problem has re-occurred while on the road causing a road safety issue (no trailer lighting), some times without warning. The dealer doesn't know what else to do at this point.

- Titus, AL, USA

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