2021 GMC Sierra 3500 Visibility (wipers, defrost, mirrors) Problems
- Complaints
- 1about this part
- Share
- 5%of 20 total for the year
- Median mileage
- 26,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the visibility of the 2021 GMC Sierra 3500, 5% of the 20 complaints for this model year. Where a mileage was given, the median is 26,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2021 GMC Sierra 3500. The contact stated that while his wife had the vehicle idling with the rear defroster activated, shortly afterwards, she observed smoke coming from the plastic on the rear sliding window. After a visual inspection, the contact's wife observed that the plastic was melting, prompting her to deactivate the rear defroster. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 26,000.”
NHTSA complaint #11685740, filed 2025-09, 26,000 milesRelated service bulletins
- 11015605Mar 4, 2025This technical bulletin provides a procedure to correct the condition of Suction Cup Marks on Window Glass.
- 11015146Feb 22, 2025This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the outside rearview…
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11011946Nov 22, 2024This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors.
Visibility (wipers, defrost, mirrors): other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 1 | 2% |
| 2022 | 2 | 6% |
| 2021 | 1 | 5% |
| 2020 | 2 | 4% |
| 2018 | 2 | 14% |
| 2015 | 2 | 6% |
| 2011 | 1 | 5% |
| 2005 | 1 | 4% |
| 2002 | 1 | 5% |
| 2000 | 1 | 4% |
| 1998 | 1 | 8% |
| 1997 | 1 | 10% |
Other parts of the 2021 GMC Sierra 3500
7 complaintsBrakes
5 complaintsElectrical system
4 complaintsEngine
3 complaintsOther or unknown
3 complaintsFuel system
2 complaintsBack-over prevention (rear camera)
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 2021 GMC Sierra 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology