SERVICE MANUAL UPDATE-SEC. 8A ELECT. SYSTEM DIAGNOSIS

SUBJECT: SERVICE MANUAL UPDATE - SECTION 8A - ELECTRICAL SYSTEM DIAGNOSIS-OPTION AL7 SPORT SEATS

MODELS AFFECTED: 1992 BONNEVILLE MODELS

The Component Location Chart, for the sport seats (AL7), has been revised.

The following revised chart should be utilized for proper system diagnosis:

1992 BONNEVILLE SSE/SSEi, page 8A-148-6

Please update your respective service manual accordingly.

SPORT SEATS (AL7)

COMPONENT LOCATION

Item Description Figure Connector ---- ----------- ------ --------- Console Seat Switch.......Under center console I/P Fuse Block Behind I/P, left of ..........................steering column.................201- 8-A Lumbar Control Module.....Under passenger's seat Seat Air Pump Assembly....Under passenger's seat Seat Control Module.......Under driver's seat ............201-13-D.....202-32 Seat Motors...............Under respective seats .........201-13-E Seat Solenoid Valve Assemblies................Under respective seats C340 (10 cavities) LH front door sill, ..........................taped to composite harness......201-12-C.....202-6 C345 (2 cavities).........Bottom of passenger's seat......201-13-E C350 (6 cavities).........Bottom of driver's seat.........201-13-D.....202-7 C351 (6 cavities).........Under driver's seat C352 (1 cavity)...........Bottom of driver's seat.........201-13-D C353 (6 cavities).........Bottom of passenger's seat......201-13-E.....202-7 C354 (8 cavities).........Bottom of passenger's seat......201-13-E.....202-7 G202 Below LH side of I/P, ..........................middle of shroud................201- 8-E S225 Composite harness, ..........................bottom of LH shroud.............201- 8-E S227 Composite harness, ..........................middle of LH shroud.............201- 8-E S228 I/P harness, behind ..........................center of I/P...................201-11-A S254 Composite harness, ..........................middle of LH shroud.............201- 8-E S288 Composite harness, ..........................bottom of LH shroud.............201- 8-E S289 Composite harness, ..........................middle of RH shroud.............201- 8-F S340 Seat solenoid jumper ..........................harness, under driver's seat....201-13-D S341 Seat solenoid jumper ..........................harness, under passenger's seat.201-13-E S346 Seat solenoid jumper harness, ..........................under driver's seat

TROUBLESHOOTING HINTS

o Try the following checks before doing the System Check.

1. Check I/P Fuse Block Fuse 15 by observing that the Dome Light comes on with any door opened.

2. Check that connectors to RH and LH Seat Solenoid/Valve Assemblies are mated correctly.

3. Check Circuit Breaker 23 for continuity.

4. Check that ground G202 is clean and tight.

o Go to System Check for a guide to normal operation.

o Go to System Diagnosis for diagnostic tests.

SYSTEM CHECK

Use the System Check Table as a guide to normal operation.

o Refer to System Diagnosis for a list of symptoms and diagnostic steps.

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.