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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!
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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

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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+.

POWER BRAKE UNITS, GENERAL MOTORS -> Bendix Brake Boosters -> POWER BRAKE UNIT, Replace -> 1990-91 C & K SERIES -> ASTRO VAN & SAFARI VAN -> CABALLERO & EL CAMINO -> FULL SIZE EXCEPT 1990-91 C & K SERIES
Vehicle: 1990 GMC S15 Pickup 2.5 L4 GAS

CABALLERO & EL CAMINO

Pump brake pedal several times with engine off to deplete accumulator of fluid.

  • Remove two nuts attaching master cylinder to booster, then move master cylinder away from booster with brake lines attached.
  • Remove three hydraulic lines from booster. Plug and cap all lines and outlets.
  • Remove retainer and washer securing booster pushrod to brake pedal arm.
  • Remove four nuts attaching booster unit to dash panel.
  • From engine compartment, loosen booster from dash panel and move booster pushrod inboard until it disconnects from brake pedal arm. Remove spring wa...

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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 -> Component Locations -> 1985-93 Astro & Safari Van & S/T Series w/2.5L Engine
Vehicle: 1990 GMC S15 Pickup 2.5 L4 GAS

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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 ...

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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+.

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

  • Disconnect battery ground cable.
  • Remove alternator drive belt.
  • Remove alternator mounting bolts.
  • Remove output terminal nut.
  • Disconnect electrical connector.
  • Remove alternator from vehicle.
  • Reverse procedure to install, noting t...

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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 -> StabiliTrak Control System Warning Lamp ->
Vehicle: 1990 GMC S15 Pickup 2.8 V6 GAS

This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the warning...

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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 2.5 L4 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...

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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 2.5 L4 GAS

  • Place a suitable tool on tensioner pulley axis bolt.
  • Rotate tension...

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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+.

Brake Pedal Component Locations  Diagram for 1989 GMC S15 Pickup  2.5 L4 GASBrake Pedal Component Locations Diagram for 1989 GMC S15 Pickup 2.5 L4 GAS

Components on diagram:
  • Cruise Control Brake Switch
  • Stop Lamp Brake Switch
  • LH Rear Corner Of Dash Panel Diagram for 1989 GMC S15 Pickup  4.3 V6 GASLH Rear Corner Of Dash Panel Diagram for 1989 GMC S15 Pickup 4.3 V6 GAS

    Components on diagram:
  • Clutch Start Switch
  • Cruise Control Servo
  • Connector C158
  • 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  4.3 V6 GAS Wiring Diagram1988 GMC S15 Pickup 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Instrument Cluster
  • Check Gages
  • Oil Pressure Sensor/Switch
  • Coolant Temp Sensor/Switch
  • Oil Pressure Relay
  • 1990 GMC S15 Pickup  2.8 V6 GAS Wiring Diagram1990 GMC S15 Pickup 2.8 V6 GAS Wiring Diagram

    Components on diagram:
  • Horn Relay
  • Horn
  • Hazard Flasher
  • Buzzer
  • Directional Flasher
  • 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: WHEELS/ALUMINUM - COATED BALANCE WEIGHT USAGE INFO
    Vehicle: 1987 GMC S15 Pickup 2.5 L4 GAS

    Auto Systems:
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • Document: 4L60 - BUZZ NOISE AT IDLE - DIAGNOSIS/REPAIR
    Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

    Symptoms:
  • Noise
  • Auto Systems:
  • Automatic Trans, Coolers, Torque Converter
  • 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 details about 2002 GMC C3500 Bumper Bracket, Front, Passenger Side2002 GMC C3500 Bumper Bracket, Front, Passenger Side, A High Quality, Direct Fit OE Replacement For Bumper Bracket.

    Source: Auto Body Parts Store

    $1.81

    Click here to view more details1993 GMC K1500 Serpentine Belt, 94.1 in. effective length, 0.82 top width, 6 ribs; A high quality, direct fit OE replacement serpentine belt; With 2 years limited Trustbuilt warranty..

    Source: Auto Body Parts Store

    $30.75

    Click here to view more details about 2011 GMC Pickup Sierra Aftermarket Center Caps2011 GMC Pickup Sierra Aftermarket Center Caps, Aftermarket Center Caps; Brushed Aluminum Face; ABS; Set OF 4, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $85.50

    Click here to view more details about 1985 GMC S15 Pickup V6, 2.8 L, 173 CID Rebuilt Engine1985 GMC S15 Pickup V6, 2.8 L, 173 CID Rebuilt Engine, RWD, block #068, 889, 818, crank #504, with carb, rear main cap grooved for oil pan(13/32" wide)., Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,215.00

    Click here to view more details1987 GMC S15 Pickup Used A/C Compressor, 2.8, AUTO, 4X4 6-173 (2.8L), Very Good.

    Source: Used Auto Parts Store

    $103.00

    Click here to view more details1982 GMC S15 Pickup Used Starter, 2.8, AUTO, 4X4 6-173 (2.8L), Very Good.

    Source: Used Auto Parts Store

    $83.00
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