Service Procedure
Seat Adjuster Stud InspectionImportant:
Inspect all of the inboard seat adjuster studs.
^ If any of the inboard seat adjuster studs do NOT pass inspection, refer to Seat Adjuster Stud Removal in this bulletin. Only replace the seat adjuster studs that do NOT pass inspection.
^ If all of the inboard seat adjuster studs pass the inspection, no further action is required.
1. Place a 50 Nm wrench on the front driver's side inboard stud and align the handle with the tunnel.
2. Pull the wrench until it clicks.
^ If the wrench clicks at or less than 45 degrees, the stud is good.
^ If the wrench pulls beyond 45 degrees and does not click, the stud is suspect and needs to be replaced.
3. Place the 50 Nm wrench on the rear driver's side inboard stud and rotate the handle to the rear trim panel.
4. Pull the wrench until it clicks. Use the rear edge of seat as guide.
^ If the wrench clicks at or less than 45 degrees, the stud is good.
^ If the wrench pulls beyond 45 degrees and does not click, the stud is suspect and needs to be replaced.
5. Place the 50 Nm wrench on the front passenger side inboard stud and align the handle with the tunnel.
6. Pull the wrench until it clicks. Use the floor bump as a guide.
^ If the wrench clicks at or less than 45 degrees, the stud is good.
^ If the wrench pulls beyond 45 degrees and does not click, the stud is suspect and needs to be replaced.
7. Place the 50 Nm wrench on the rear passenger side inboard stud and rotate the handle to the rear of the folded seat back.
8. Pull the wrench until it clicks. Use the rear edge of the seat as a guide.
^ If the wrench clicks at or less than 45 degrees, the stud is good.
^ If the wrench pulls beyond 45 degrees and does not click, the stud is suspect and needs to be replaced.
Seat Adjuster Stud Removal
Important:
Adjust the seat forward or rearward to access the seat adjuster nuts.
1. Remove the front and/or rear inboard seat adjuster nuts, as required, from the front driver and/or passenger seats.
2. Lift and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
3. Locate the four inboard seat adjuster stud caps (1). The seat adjuster stud caps (1) are 22 mm (7/8 in) in size.
4. Using a grinder (or equivalent tool) remove the three spot welds from the cap of each seat adjuster stud that is to be replaced.
5. Using a pry bar, remove the seat adjuster studs.
Caution:
carefully read and perform Steps 6.0 through 10.0 as instructed in this bulletin. failure to perform Steps 6.0 through 10.0 as written may increase the chance of corrosion damage or limit the operation of moving parts, resulting in personal injury.
Important:
Bare metal surfaces, must be treated with a metal conditioner and re-primed prior to assembly. Refer to the GM Approved Refinish Materials Book GMP/NGM4901 M-D (GMW 15406 Global Approved Refinished Booklet - October 2007) that identifies the paint Systems you may use. Refer to Anti-Corrosion Treatment and Repair in SI for more information.
6. Clean and prepare a small area around the seat adjuster stud holes to ensure that the metal surface around the holes is smooth. Do not remove a large area of paint around the seat adjuster stud holes.
^ Clean the weld areas with an abrasive wheel.
^ Treat the bare metal. Refer to the recommendation of the Paint Manufacturer. Refer to Anti-Corrosion Treatment and Repair in SI for more information.
^ Apply a grey expoxy primer to the repair area. Select a product from the GM Approved Refinish Materials Book GMP/NGM4901 M-D (GMW 15406 Global Approved Refinished Booklet - October 2007).
^ Scuff-sand and wipe the residue off of the repair area with a cleaning solvent.
^ Spray 3M 8374 Ultrapro MSP Sprayable Seam Sealer (or equivalent) on the repaired areas.
^ Re-apply grey expoxy as a sealer coat. If the underbody has a colored exterior overspray, duplicate it by lightly spraying the appropriate exterior body color.
Notice:
Two (2) technicians are required to perform Steps 7-10. To avoid part damage, ensure that a new washer is installed with the new bolt. If the seat track contacts the seat adjuster bolt, remove the bolt and re-install the bolt using an additional washer. Do NOT use more than two washers with the new bolt.
7. Insert a new washer and bolt into the front and/or rear inboard seat adjuster stud hole(s).
8. Lower the vehicle.
9. Using a torque wrench, tighten the front and/or rear inboard seat adjuster nuts (driver and passenger seat).
Tighten
Tighten the front and/or rear inboard seat adjuster nut(s) to 45 N.m (33 ft-lb).
Important:
The seat back should be in the upright position and not the fully reclined position for the seat track to achieve the full rear position.
10. Test the function of the seat. Sit in the seat and adjust the seat to the full forward and rearward positions.
^ If the rear inboard seat adjuster bolt contacts the seat track and limits the range of seat adjustment, remove the seat bolt and add one additional washer to the seat bolt. Use no more than two washers to adjust the clearance between the seat track and seat adjuster bolt. Perform Steps 7-10 again.
^ If the seat can be moved to the full forward and rearward positions without contact, no further action is required.