2021 GMC Sierra 1500 Visibility (wipers, defrost, mirrors) Problems
- Complaints
- 7about this part
- Share
- 1%of 598 total for the year
- Median mileage
- 5,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the visibility of the 2021 GMC Sierra 1500, 1% of the 598 complaints for this model year. Where a mileage was given, the median is 5,000 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.
“My rear electric window is leaking into my back seat area and the ceiling of the truck has water stains. It is coming from the roof and is leaking in 3 different areas. I am afraid I will now have mold in my car and I can’t have my grandchildren in the car to be safe for them. I had it checked at a local GMC dealer and I had to pay for a leak speacialist to verify and they confirmed the window has a leak. The leak started in April 2025 and has slowly gotten worse. …”
NHTSA complaint #11676578, filed 2025-07“The driver-side mirror on my 2021 GMC sierra is unusable at freeway speed. When traveling at freeway speed the glass moves due to wind and causes the reflection in the mirror to be blurry. The reflection from the mirror is blurry to the point that I'm unable to identify objects in the mirror and it is difficult to gauge size and closing speed of any objects in the mirror. The issue has been with the vehicle since I purchased it new in June of 2021. …”
NHTSA complaint #11486201, filed 2022-09“I don't believe this needs to have an investigation, but i would like it documented and brought to GM's attention for future body designs. I have never had as many rocks/debris hit my windshield as I have with this truck. I have had one chip in a windshield in 30+ years of driving, until this truck where I have had several that needed repairs, and this last one has created a Crack large enough where my windshield needs replaced. It may be bad luck, but I've talked to multiple other Sierra owners and most of them have had the same issue. A couple have had the windshield replaced almost yearly. …”
NHTSA complaint #11664208, filed 2025-06“A small drip started approximately 18 months ago from top middle of left side window in rear slider. It was first mistaken as blow by from car wash. Leaking slowly progressed to dripping down middle of both side windows in rear sliders. Leaking progressed to drops coming from under headliner then dropping on side portions of rear slider. It then would drip onto seat or behind seats. Leakage was consistent with TSB 18-NA-383 as well as 20-NA-142 and 24-NA-103. …”
NHTSA complaint #11756237, filed 2026-08Related service bulletins
- 11023368May 17, 2025This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed.
- 11015605Mar 4, 2025This technical bulletin provides a procedure to correct the condition of Suction Cup Marks on Window Glass.
- 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.
Visibility (wipers, defrost, mirrors): other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 1% |
| 2025 | 7 | 6% |
| 2024 | 10 | 3% |
| 2023 | 7 | 1% |
| 2022 | 1 | 0% |
| 2021 | 7 | 1% |
| 2020 | 15 | 3% |
| 2019 | 8 | 1% |
| 2018 | 6 | 2% |
| 2017 | 12 | 3% |
| 2016 | 14 | 4% |
| 2015 | 26 | 4% |
| 2014 | 21 | 3% |
| 2013 | 1 | 1% |
| 2012 | 1 | 1% |
| 2011 | 3 | 1% |
| 2010 | 2 | 1% |
| 2009 | 3 | 1% |
| 2008 | 3 | 1% |
| 2007 | 5 | 2% |
| 2006 | 2 | 1% |
| 2005 | 3 | 2% |
| 2004 | 5 | 2% |
| 2003 | 4 | 2% |
| 2000 | 1 | 1% |
| 1998 | 11 | 19% |
| 1997 | 14 | 17% |
| 1994 | 10 | 77% |
Other parts of the 2021 GMC Sierra 1500
322 complaintsTransmission and drivetrain
145 complaintsElectrical system
76 complaintsEngine cooling
49 complaintsOther or unknown
45 complaintsFuel system
42 complaintsSteering
34 complaintsBrakes
25 complaintsBody and structure
13 complaintsLatches, locks and linkages
10 complaintsSuspension
10 complaintsLane departure
8 complaints
← All problems reported for the 2021 GMC Sierra 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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