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GMC S15 Pickup CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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    Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about GMC S15 Pickup car and truck repair procedures including GMC engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your GMC S15 Pickup automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for GMC mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your GMC S15 Pickup vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

    A/C & HEATER SERVICE PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported GMC S15 Pickup cars and light trucks from 1990+

    A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Chevrolet & GMC S & T Series & Oldsmobile Bravada
    Vehicle: 1990 GMC S15 Pickup 2.8 V6 GAS

    [[table data]]

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported GMC S15 Pickup cars and light trucks from 1990+.

    DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Caliper -> BRAKE PAD, Replace -> INSTALLATION -> REMOVAL
    Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

    REMOVAL

    • Remove caliper assembly as outlined above.
    • Remove inboard pad with retainer spring. Dislodge outboard pad and position caliper on the front suspension so the brake hose will not support the weight of the caliper.
    • Remove two sleeves from inboard ears of the caliper.
    • Remove four rubber bushings from the grooves in each of the caliper ears.

    INSTALLATION

    • Lubricate new sleeves, rubber bushings, bushing grooves and mounting bolt ends with Delco Silicone Lube or equivalent.
    • Install new bushings and sleeves in caliper ears. Position the sleeve so that the end toward the pad is flush...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Fuel filter replacement procedures with corresponding images for most domestic and imported GMC S15 Pickup cars and light trucks sold in the U.S. for 1980+.

    General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1987-91 S/T Series Blazer, Bravada, Jimmy & Pickup -> Normal Service -> Severe Service
    Vehicle: 1990 GMC S15 Pickup 2.5 L4 GAS

    Normal Service

    R...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Includes CV axle, universal joint, and driveline replacement, for domestic and imported GMC S15 Pickup cars and light trucks from 1990+.

    CV AXLE SHAFT, Replace
    Vehicle: 1990 GMC S15 Pickup 2.8 V6 GAS

    • Disconnect battery ground cable.
    • Unlock steering column, then raise and support vehicle.
    • Remove wheel assembly, then axle nut and washer.
    • Support lower control arm, then remove lower shock absorber nut and bolt.
    • Scribe all revolving driveshaft components in relation to connecting component to ensure correct balance upon assembly.
    • Insert drift through opening in top of caliper into rotor cooler vanes to keep axle ...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Includes starter and alternator replacement procedures for domestic and imported GMC S15 Pickup cars and light trucks from 1990+.

    Starter, Replace
    Vehicle: 1990 GMC S15 Pickup 2.5 L4 GAS

    Upon removal of starter, note if any shims are used. If shims are used, they should be installed in their original locations. After installation, if starter is noisy during cranking, remove one .015 inch double shim or add one .015 inch single shim to outer bolt. If starter makes a high pitched whine after firing, add .015 inch double shims until noise ceases.

    • Disconnect battery ground cable.
    • Raise and support front of vehicle.
    • Raise vehicle half way to gain access to starter motor.
    • Re...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Maintenance lamp reset procedures with corresponding images for most domestic and imported GMC S15 Pickup cars and light trucks sold in the U.S. from 1990+.

    General Motors Corp./Saturn Trucks -> Reduce Engine Power Indicator Lamp ->
    Vehicle: 1990 GMC S15 Pickup 2.8 V6 GAS

    The Reduce Engine Power indicator lamp should light for a approximately 3 seconds when the ignition is turned On as a bulb check. If the warning lamp turns On during vehicle operation, a vehicl...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Includes radiator, cooling and heater hose replacement procedures for domestic and imported GMC S15 Pickup cars and light trucks from 1990+

    Radiator, Replace
    Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

    • Drain cooling system into a suitable container.
    • Remove overflow hose.
    • Remove upper fan shroud.
    • Remove radiator hose inlet.
    • Remove radiator hose outlet.
    • Remove heater outlet hose.
    • Remove transmission oil cooler lines.
    • Remove engine oil cooler lines.
    • Remove two radiator mounting bolts.
    • Remove radiator f...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR GMC S15 Pickup AUTOMOBILES

    Serpentine belt replacement procedures with corresponding images for most domestic and imported GMC S15 Pickup cars and light trucks sold in the U.S. from 1990+.

    Serpentine Drive Belt, Replace
    Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

    • Remove belt tensioner pulley retaining bolt...

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR GMC S15 Pickup AUTOMOBILES

    Component location diagrams for most GMC S15 Pickup cars and light trucks sold in the U.S. from 1990+.

    LH Side Of Dash Panel Diagram for 1990 GMC S15 Pickup  2.8 V6 GASLH Side Of Dash Panel Diagram for 1990 GMC S15 Pickup 2.8 V6 GAS

    Components on diagram:
  • A/C Compressor Control Relay
  • Fuel Pump Relay
  • Splice S115
  • Connector C100
  • Connector C137
  • LH Side Of Transmission   Diagram for 1989 GMC S15 Pickup  4.3 V6 GASLH Side Of Transmission Diagram for 1989 GMC S15 Pickup 4.3 V6 GAS

    Components on diagram:
  • Speed Sensor
  • Back-Up Lamp Switch
  • Connector C157
  • Connector C163
  • Connector C164
  • CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR GMC S15 Pickup AUTOMOBILES

    OEM drawn wiring diagrams for most GMC S15 Pickup cars and light trucks sold in the U.S.

    1988 GMC S15 Pickup  2.8 V6 GAS Wiring Diagram1988 GMC S15 Pickup 2.8 V6 GAS Wiring Diagram

    Components on diagram:
  • Ignition Switch
  • Electronic Spark Timing Distributor
  • 1990 GMC S15 Pickup  4.3 V6 GAS Wiring Diagram1990 GMC S15 Pickup 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Underhood Lamp Assembly
  • CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR GMC S15 Pickup AUTOMOBILES

    OEM TSB listings for most GMC S15 Pickup cars and light trucks sold in the U.S. from 1985+.

    Document: INFORMATION ON INAPPROPRIATE WARRANTY CLAIMS SUBMITTED FOR DAMAGED RADIOS AND INSTRUMENT PANEL CLUSTERS (IPCS)
    Vehicle: 1988 GMC S15 Pickup 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: IC (ELECTROMECHANICAL/DIGITAL) - REPLACEMENT INFO
    Vehicle: 1989 GMC S15 Pickup 2.5 L4 GAS

    Auto Systems:
  • Instruments, Dash Cluster, Warning Lights, Mirrors
  • CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR GMC S15 Pickup AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most GMC S15 Pickup cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most GMC S15 Pickup cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most GMC S15 Pickup cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most GMC S15 Pickup cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO GMC S15 Pickup SPECIFICATIONS DATA!

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    Click here to view more details1987 GMC S15 Pickup Used A/C Compressor, 5.7, AUTO, RWD, Very Good.

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    Click here to view more details1988 GMC S15 Pickup Used Alternator, 4.3, AUTO, 193K, 4X2 6-262 (4.3L), Very Good.

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