1989 GMC S15 Service and Repair Manual
This factory service and repair manual for the 1989 GMC S15 pairs two pickup bodies, an extended cab and a standard cab, with three gasoline engines: the 2.8L and 4.3L overhead-valve V6s and a 2.5L overhead-valve inline-four. Three trims are named: Base, High Sierra and Sierra Classic. The book is organized by system rather than by variant, so its engine, transmission, axle, brake, suspension and electrical sections apply across the range, each with its own procedures, specifications, torque values, wiring diagrams and diagnostics.
Engines covered
- 2.8L V6 (173 cu in) — OHV, naturally aspirated, gasoline
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 2.5L inline-four (151 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door extended cab pickup
- 2-door standard cab pickup
Trims covered
- Base
- High Sierra
- Sierra Classic
Known issues on the 1989 S15. Three recalls appear on the federal record. Two involve replacement lamps sold without the amber side reflectors federal rules require. The third is more serious: engine cooling fan blades that crack from fatigue and can break apart, throwing a piece at anyone standing near an open hood. Eleven owner complaints are logged, and the reported ones cluster on engine and engine cooling and the electrical system, with exterior lighting also represented. Cooling system procedures, fan specifications, torque values and electrical wiring diagrams and diagnostics are the sections that match.
CERTAIN CK MOTORSPORTS COMBINATION HEADLIGHTS, CLEAR CORNER, BUMPER, AND SIDE MARKER LIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON THE PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE N
WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL
CK MOTORSPORT WILL NOTIFY OWNERS AND REPLACE THE NONCOMPLIANT LAMPS FREE OF CHARGE. THE RECALL BEGA
CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER S
WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL
PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 200
THE ENGINE COOLING FAN BLADES BREAK AS A RESULT OF FATIGUE AND/OR VEHICLE INDUCED STRESS.
IF THE BLADE BREAKAGE OCCURS WHILE THE HOOD IS OPEN, APERSON WORKING UNDER THE HOOD OR IN THE VICINI
INSTALL A NEWLY DESIGNED FAN ASSEMBLY.
DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT
SEAT BELT RELEASED DURING AN ACCIDENT,DRIVER WAS THROWN APPROXIMATELY 50 FEET FROM VEHICLE, RESULTING IN A FATALITY. *AK
BRAKES LOCKED UP, CAUSING VEHICLE TO LOSE CONTROL/SKID. *AK
VEHICLE CAUGHT FIRE WHILE DRIVING, UNDER THE HOOD FIRE, EA94-029 ACTIVE WILL PROVIDE INFORMATION. TT
THE CONSUMER (WHO IS NOW DECEASED HAROLD BRIDGES) WAS DRIVING WHEN ALL OF A SUDDEN HE WAS REAR ENDED BY ANOTHER MOTORIST WHO WAS DRIVING RECKLESSLY, THE CONSUMERS SEAT ADJUSTER RAILING FAILED, WHICH A
CONSUMER HAD VEHICLE SERVICED SEVERAL TIMES FOR THE FRONT LEFT BLINKER. FOR SOME REASON THE OUTSIDE BLINKER STOPPED WORKING EVEN THOUGH THE INSIDE SIGNAL ON DASHBOARD STILL WORKED. *AK *NM
Showing the 5 most serious of 11 complaints filed with NHTSA.
