One problem related to mid/rear seats assembly has been reported for the 1999 GMC Sierra. The most recently reported issues are listed below.
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.
| Seats problems | |
| Seat Broken problems | |
| Front Seat Recliner problems | |
| Front Seat Power Adjust problems | |
| Front Seat Head Restraint problems | |
| Mid/rear Seats Assembly problems |