A rear turn signal blinking on its own on a 2020+ Silverado/Sierra HD is often Tire Fill Alert flagging a low tire. How the feature works, how to use it, and TPMS tips from the owner’s manual.
Glitchy intermittent wipers, flaky Bluetooth, turn signals flashing on their own, and dead batteries on 2020–2024 Silverado/Sierra 2500HD: the GM bulletins, recalls, and owner fixes.
My 2021 Silverado 2500HD 6.6 gas lost its fuel pump module at 65k miles. Symptoms, the GM bulletins, why my VIN didn’t qualify for a recall, parts, and real cost ranges.