1999 GMC Sierra Seats Problems
- Complaints
- 23about this part
- Share
- 4%of 600 total for the year
- Median mileage
- 68,351miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 23 complaints about the seats of the 1999 GMC Sierra, 4% of the 600 complaints for this model year. Where a mileage was given, the median is 68,351 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The drivers seat adjuster fails to hold the seat from sliding back and forth. I have manual bucket seats and have been told by Gmc that there is no records of failures. This has been repaired 5 times by replacing the seat adjuster, all under warranty thus far, but I am concerned that this is a safety issue since if it fails while driving, it allows the driver to be moved forward when brakes are applied.”
NHTSA complaint #10128683, filed 2005-07, 63,000 miles“While approaching a stop sign at approximately 20 MPH, the driver side seat adjustment broke free and the seat slid forward. Because of the anchorage of the seat belt being the seat itself, nothing held me back from contact with the steering wheel. Fortunately this happened at a low rate of speed. I am in the process of seeking reimbursement for repair cost in the amount of $513.11 from GM who would not cover the repair because the vehicle is out of warranty.”
NHTSA complaint #10033417, filed 2003-08, 68,351 miles“I have a 1999 Gmc Sierra extended cad truck the drivers seat adjustment made of plastic when it breaks the seat will not lock. The seat belt is attached to the seat so in the event of an accident all that is holding is flimsy plastic. I checked all the salvage yards in my area they said every truck that they have that has wrecked the plastic slide is broken. To me, my wife and my life are worth more than this plastic piece. Gm needs to recall and either fix this piece with metal or different seat tracks. My seat broke just adjusting it.”
NHTSA complaint #10161823, filed 2006-07, 113,950 miles“Dt: consumer states when he parked his vehicle he raised the seat. When he got back in the truck the seat kept moving back and forth. The seat will not stop going back and forth. The dealership replaced the track and the parts to the seat. The repairs were made at the owners expense. The seat track was repalced. Updated 12/07/05.”
NHTSA complaint #10142808, filed 2005-11, 62,150 miles“Operated release lever on drivers seat to gain enterance to rear seat area. Hen seat back was returned to up right position, seat would not lock in any position. Drove to local garage, very dangerious. Mechanic advise seat track was broken. Ordered new track from GM, cost $164+tax + labor to install. Saved old track for NHTSA inspection. Seat tracks is a safety item. Now to convince GM.”
NHTSA complaint #10074822, filed 2004-06, 50,000 milesRelated service bulletins
- 10017764Oct 1, 2005Unwanted/loose seat movement.
Seats: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2017 | 1 | 2% |
| 2015 | 2 | 4% |
| 2014 | 2 | 2% |
| 2013 | 1 | 3% |
| 2006 | 1 | 2% |
| 2005 | 2 | 2% |
| 2004 | 1 | 1% |
| 2003 | 3 | 1% |
| 2002 | 3 | 1% |
| 2000 | 2 | 0% |
| 1999 | 23 | 4% |
| 1997 | 6 | 3% |
| 1996 | 20 | 8% |
| 1995 | 24 | 9% |
| 1994 | 21 | 11% |
| 1993 | 15 | 21% |
| 1992 | 1 | 3% |
| 1990 | 1 | 6% |
Other parts of the 1999 GMC Sierra
338 complaintsSuspension
39 complaintsVehicle speed control
39 complaintsTransmission and drivetrain
37 complaintsTires
31 complaintsBody and structure
30 complaintsFuel system
26 complaintsSteering
18 complaintsVisibility (wipers, defrost, mirrors)
18 complaintsEngine cooling
17 complaintsSeat belts
15 complaintsAir bags
12 complaints
← All problems reported for the 1999 GMC Sierra
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