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.
1999 GMC Sierra seats problems
23 complaints (4% of all complaints for this car). Typical mileage when it fails: 68,351.
- owner complaints
- 23
- of this car's complaints
- 4%
- typical mileage
- 68,351
- crashes
- 0
- recalls
- 0
Which part fails
- Front assembly: recliner2
- Front assembly: power adjust1
At what mileage
Complaints by mileage at the time of the problem.
GMC Sierra seats problems in other years
Related recalls
No recalls on record for this model year.
What 1999 GMC Sierra owners say
Most recent owner complaints, unedited.
Dt*: the contact stated while stopping the vehicle, both front seats move forward/backwards a quarter of an inch. The dealership determined the entire seat assembly needs to be replaced. Updated 5/10/2006 - the power seat track on both front seats were loose.
Locking mechanism on front driver seat failed, causing movement of the seat both forward and backwards without warning.
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. *nm the seat track was repalced. Updated 12/07/05.
1-seat adjustment 2-seat will not lock in position-slides freely front to back 3-temporarily locked failed piece into usable position-cannot adjust to any other position due to failed plastic block. Researched complaints for 99 gmc sierra truck and found 10 existing identical failures. These are complaints-566049, 758819, 855016, 862903, 877718, 10020665, 10022698, 10066125, 10074822. I am sure there will be additional complaints under "mirror" vehicles such as chevrolet and cadilac and other years. I have identified the piece as a plastic block approximately 1 inch wide by 2.5 inches long with a lever, spring and pin assembly. The "u" portion of this block fails causing the seat to slide freely creating a severe safety issue. This is clearly an unsafe and poor design. I have pieces of broken block for reference and will continue to escalate this as far as necessary for resolution from gm.
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.
There is a bar that is at the base of the front drivers seat which comes out at the console. The bar cut straight through the seat. The bar is very sharp, and the consumer was badly cut by the bar . *ak
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 the federal safety agency inspection. *ak seat tracks is a safety item. Now to convince gm.
As I was driving down the highway I had to apply my brakes very quickly and a part in the manual adjusted drivers seat broke and the seat slid forward pushing me against the steering wheel. After this incident the seat will not lock in any position (it slides free in the track). I reported this to gm and they equated it with brakes wearing out. I am so very thankful to the lord that nothing was coming because when the seat malfunctioned my ability to steer and continue braking was affected.
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.
Questions about the 1999 GMC Sierra seats
Does the 1999 GMC Sierra have seats problems?
Owners have filed 23 complaints about the seats of the 1999 GMC Sierra, 4% of all its complaints.
At what mileage do 1999 GMC Sierra seats problems start?
The typical (median) mileage in owner complaints is 68,351 miles.
Was there a recall on the 1999 GMC Sierra seats?
There is no recall for this problem on this model year.
What year does the GMC Sierra have bad seats?
The GMC Sierra model years with the most seats complaints are 1995 (23 complaints), 1999 (23 complaints) and 1994 (21 complaints).
Other 1999 GMC Sierra problems
Brakes 338Acceleration 39Suspension 39Transmission 37Tires 31Body 30Fuel system 26Steering 18Visibility 18Engine 17Seat belts 15Airbags 12Electrical 12Lights 8Wheels 8Locks 3
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