10.0

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

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2020 GMC Sierra 1500 body / paint problems

body / paint problem

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2020 GMC Sierra 1500 Owner Comments

problem #3

Jan 292024

Sierra 1500

  • miles

A D V E R T I S E M E N T S

Rear Sliding Glass window frame has cracked and allows water to enter the cab of the vehicle. Yes this is available for inspection. The water entering the cab of the vehicle can create mold from moisture build up if left untreated. I was able to have the dealer service center confirm the issue noted in [XXX] but they were unable to repair it as it is outside of warranty. I was able to have an independent 3rd party glass company confirm that it was indeed a manufacturers defect with a cracked housing and not an issue with sealant around the glass itself. No warning lamps or other indications other than water in the back seat of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Duluth, MN, USA

problem #2

Dec 092023

Sierra 1500

  • miles
Rear Window Leaks due to failed sealing at the factory. If not fixed will ruin interior components and possibly rust. Yes No

- Jerome, ID, USA

problem #1

May 142020

Sierra 1500

  • miles
The back window leaks, I brought it in they told me it wasn't warranty so I paid to have it fixed. Still leaks.

- Toms River, NJ, USA

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