Table 1 shows three common visibility related problems of the 2025 GMC Sierra 1500. The number one most common problem is related to the wiper (four problems). The second most common problem is related to the defroster/defogger/hvac system compressor (one problem).
| Problem Category | Number of Problems |
|---|---|
| Wiper problems | |
| Defroster/defogger/hvac System Compressor problems | |
| Defroster/defogger/hvac System problems |
If truck has a “dusting of snow” on it, blower motor for defrost and heat retracts to absolute “low” setting to supposedly protect the blower motor. Have been caught driving in snow, and defrost couldn’t keep up with keeping windshield defrosted due to this behavior. Read details...
The contact owns a 2025 GMC Sierra 1500. The contact stated that while driving at 35 mph, there was an abnormal knocking sound coming from the engine. No warning lights were illuminated. The vehicle was towed to the dealer, where it was diagnosed with a rough idle code, and that the thermostat Read details...
The contact owns a 2025 GMC Sierra 1500. The contact stated that while the defroster was activated to clear the windshield, the blower vents on the passenger’s side started making an abnormal hissing sound, and air produced by the blower motor decreased and was inadequate to clear the Read details...