POWER COMFORT SEAT SERVICE PROCEDURES
MODELS AFFECTED: 1986 RIVIERA "T" TYPE WITH AN3 SEAT
NOTE: THIS BULLETIN SUPERSEDES BULLETIN 86-10-15, DATED APR. '86. PLEASE DISCARD ORIGINAL BULLETIN AND REPLACE IT WITH THIS ONE.
AN3 POWER COMFORT SEAT SERVICE PROCEDURES
Heat Restraint
Remove or Disconnect
1. Unsnap and lift out cushion and seatback pad.
2. Disconnect shoulder belt from belt guide on head restraint.
3. Fully extend head restraint.
4. Hog rings securing center panel of seatback trim material as required to gain access to head restraint wiring connector (11, Figure 3). Separate Connector.
5. Pull post bellows (7, Figure 1) from under trim to expose roll pins (8). Drive out roll pins.
6. Head restraint.
7. From underside of head restraint, pull flap of trim material secured by hook and loop fasteners and work foam and trim off head restraint. Further disassembly of motor, gear nuts and flexible shafts (4,5, and 6) will be obvious upon inspection.
Install or Connect
Install reverse of removal procedures.
Seatback Lumbar Bag
Remove or Disconnect.
1. Unsnap and lift out cushion and seatback pad.
2. Hog rings securing center panel of seatback trim material as required to gain access to lumbar bag (9, Figure 1). Separate hose from bag and lift out bag.
Install or Connect
Install reverse of removal procedure.
Thigh Support
Remove or Disconnect
1. Fully extend thigh support.
2. Hog rings from seat cushion trim where flap is joined to thigh support.
3. Roll pins (13, Figure 1) securing thigh support and pull out support.
4. Wiring connector from thigh support motor (4, Figure 2) and separate support from seat.
5. Work trim and foam off thigh support. Further disassembly of the motor (3, Figure 1), gear nuts (1), and flexible shafts (2) will be obvious upon inspection.
Install or Connect
Install reverse of removal procedures.
Lumbar Bag Pump
Remove or Disconnect
1. Fully extend thigh support.
2. Seat assembly from car.
3. Hog rings from seat cushion trim where flap is joined to thigh support.
4. Screws from outboard guide (16, Figure 1) of bolster wing mechanism.
5. Screws from bracket securing lumbar pump (7, Figure 2) to seat frame.
6. Separate wiring connector and lumbar bag hose (1) attached to pump and lift out pump.
Install or Connect
Install reverse of removal procedures.
Bolster Mechanism Assembly
Remove or Disconnect
1. Separate thigh support from seat (ref. Thigh Support removal procedures, Steps 1 thru 5).
2. Clips securing links (14, Figure 1) to bolster tube (15).
3. Screws securing guides (16) to seat frame.
4. Screws securing bolster wing motor (17).
5. Separate wiring connector from motor and lift out bolster mechanism assembly which consists of motor (17) and tube and shaft (15) assembly.
Install or Connect
Install reverse of removal procedure.
Recliner Gear Nut
Remove or Disconnect
1. Seat assembly from car.
2. Hinge pivot covers (3, Figure 3).
3. Rear trim panel (5).
4. Inertia release knob and escutcheon (outboard gear nut only).
5. Recliner flexible shaft (7).
6. Two 1/2" bolts from lower portion of recliner hinge (4) and swing hinge upward (View A).
7. Outboard screw (8) from gear nut.
8. Recliner motor screws (6).
9. Separate motor from gear nut by pulling apart and lift out gear nut (9) and bracket.
10. Inboard screw securing gear nut to bracket.
Install or Connect
Install reverse of removal procedure.
Recliner Motor
Remove or Disconnect
1. Screws from hinge pivot cover (3, Figure 3) sufficient to gain access to screws securing rear trim panel (5).
2. Rear trim panel (5).
3. Recliner flexible shaft (7).
4. Recliner motor screws (6).
5. Pull motor (10) inboard to separate from gear nut (9).
6. Separate wiring connector from motor and lift out motor.
Install or Connect
Install reverse of removal procedure.
NOTICE: It may be necessary to partially install flexible shaft into motor and rotate shaft in order to align shaft with drive. Flexible shaft must be fully seated in drive or damage to the drive may occur.
Recliner Hinge
Remove or Disconnect
1. Hinge pivot cover (3, Figure 3).
2. Rear trim panel (5).
3. Inertia release knob (2) and escutcheon (1) from outboard recliner hinge only.
4. Separate seatback trim as required and pull up trim enough to expose two 1/2" bolt heads on upper portion of recliner hinge (4).
5. Four recliner 1/2" hinge bolts and lift out hinge.
Install or Connect
Install reverse of removal procedure.
Rear Assembly and Harness
Remove or Disconnect
1. Seat assembly from car.
2. Wiring connectors as required (Figure 2).
Removal or Disconnect
3. Screws securing relay assembly and harness (3, Figure 2) to frame and lift out module.
Install or Connect
Install reverse of removal procedure.
Seat Switch Assembly
Remove or Disconnect
1. Seat assembly from car.
2. Six-way seat adjuster assembly from seat.
3. Wiring connectors and hoses as required.
4. Switch cover housing (18, Figure 1) and seat switch assembly.
Install or Connect
Install reverse of removal procedure.
Disassembly
1. Peel off top cover plate (19) and discard. A new top cover plate will be required for reassembly. (Part No. 20502122 - Driv. & 20502123 - Pass.)
2. Mounting plate (20).
3. Break retainer clips from sides of switch to be placed and push switch out of mounting plate. Note direction of arrow on side of switch body before removing switch.
4. Partially install placement switch in mounting plate and orient arrow as previously noted.
5. Following leads of original switch to terminal end in each connector, pull lead terminals out of respective connector, cut leads and replace terminals with respective terminals from new switch.
6. Complete removal of original switch.
Reassembly
Snap replacement switch into mounting plate and complete reassembly reverse of disassembly.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
