2018 GMC Sierra Denali Suspension Problems
- Complaints
- 1about this part
- Share
- 6%of 17 total for the year
- Median mileage
- 28,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the suspension of the 2018 GMC Sierra Denali, 6% of the 17 complaints for this model year. Where a mileage was given, the median is 28,000 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 rear end makes noise when turning and sometimes stoping. When weight is place on bed the rear end make noises. Something is wrong in the rear end of this truck. When truck is moving and turning you can here the noise.”
NHTSA complaint #11329880, filed 2020-06, 28,000 milesRelated service bulletins
- 11019516Apr 17, 2025This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- 11015409Feb 25, 2025This service bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
- 11014358Feb 14, 2025This service bulletin provides a repair procedure to correct a customer concern of a Squeak, Grind or Clunking Noise from Rear Leaf Springs.
- 11007936Aug 22, 2024This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11007935Aug 22, 2024This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10242061Aug 7, 2023This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10235561Apr 4, 2023This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
Suspension: other model years
Other parts of the 2018 GMC Sierra Denali
5 complaintsBrakes
4 complaintsBody and structure
4 complaintsExterior lighting
3 complaintsSteering
3 complaintsElectronic stability control
2 complaintsTransmission and drivetrain
2 complaintsOther or unknown
1 complaintsWheels
1 complaints
← All problems reported for the 2018 GMC Sierra Denali
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