2018 GMC Sierra 3500 Brakes Problems
- Complaints
- 6about this part
- Share
- 43%of 14 total for the year
- Median mileage
- 37,034miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the brakes of the 2018 GMC Sierra 3500, 43% of the 14 complaints for this model year. Where a mileage was given, the median is 37,034 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.
“I was driving up hill the truck lost power died/shutdown so I had no power steering no power brakes we live on a country rural road. Had the truck towed to kendall chevrolet in eugene oregon where it has been since november 2 with electrical issues that they are trying to pinpoint.”
NHTSA complaint #11281407, filed 2019-11, 58,000 miles“Driving on the freeway going approx 70 MPH and the ABS warning light, and Stabilitrak warning light suddenly turned on. I’m sure you can imagine how panicked I was going that fast on the freeway and having my brake warnings suddenly turn on. Especially with my entire family in the vehicle with me at the time. Could feel a difference when I was attempting to brake and exit the freeway. Had to apply tons of pressure to get the brake pedal to engage. The cruise control would no longer work, and the trailer brake monitoring system also began flashing. …”
NHTSA complaint #11705328, filed 2025-12“April 9th 2020 I was operating my vehicle a 2018 Gmc SIERRA 3500 denali equipped with the diesel package. I was towing a bobcat skid steer on a trailer with a total weight of approximately 4300lbs. I was traveling at about 45 MPH when I encountered a red light. With plenty of room to stop I applied the brakes as normal. They initaillay grabbed and slow my travel to about 40 MPH. Then out of what seemed nowhere the brake pedal rapidly went to the floor and the vehicle freewheeled through the light. I attempted multiple times to ease off the pedal and reapply to no avail. …”
NHTSA complaint #11321259, filed 2020-04“The contact owns a 2018 GMC Sierra 3500. The contact stated after driving on a long downhill road at an undisclosed speed with his 2017 Highland Ridge 349 RV hooked to the vehicle, as he was reaching a leveling point and depressing the brake pedal to slow the vehicle, the brakes failed to operate as needed. The contact stated that as he depressed the brake pedal further, the brake pedal overheated and would no longer respond properly. The contact stated that the vehicle was rated at 22,000-23,000 while the trailer was 14,300 pounds loaded maximum. …”
NHTSA complaint #11458637, filed 2022-03Related service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 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.
- 11011709Nov 5, 2024This 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.
- 11000550May 3, 2024This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- 10251685Feb 6, 2024This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle…
Brakes: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 20% |
| 2025 | 5 | 29% |
| 2024 | 11 | 22% |
| 2023 | 2 | 7% |
| 2022 | 4 | 13% |
| 2021 | 5 | 25% |
| 2020 | 7 | 14% |
| 2019 | 4 | 31% |
| 2018 | 6 | 43% |
| 2017 | 5 | 38% |
| 2016 | 6 | 32% |
| 2015 | 4 | 13% |
| 2014 | 1 | 14% |
| 2013 | 1 | 7% |
| 2012 | 1 | 11% |
| 2008 | 1 | 4% |
| 2007 | 3 | 19% |
| 2006 | 2 | 18% |
| 2005 | 10 | 42% |
| 2004 | 14 | 58% |
| 2003 | 3 | 43% |
| 2002 | 9 | 45% |
| 2001 | 16 | 44% |
| 2000 | 12 | 46% |
| 1999 | 9 | 47% |
| 1998 | 4 | 33% |
| 1997 | 4 | 40% |
Other parts of the 2018 GMC Sierra 3500
3 complaintsElectrical system
2 complaintsExterior lighting
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 GMC Sierra 3500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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