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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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1990198919881987
1986198519841983
1982

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+.

ANTI-LOCK BRAKES, GENERAL MOTORS -> Rear Wheel Anti-Lock Brake System -> SYSTEM SERVICE -> ELECTRONIC CONTROL UNIT (ECU) -> Except G, R, P & V Models -> G, R, P & V Models -> ISOLATION/DUMP VALVE ASSEMBLY -> SPEED SENSOR -> SPEEDOMETER CALIBRATION
Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

ELECTRONIC CONTROL UNIT (ECU)

Do not touch electrical connections and pins or allow them to come into contact with brake fluid.

  • Disconnect battery ground cable.
  • Disconnect electrical connectors from ECU.
  • Pry up tab at rear of ECU and remove unit toward front of vehicle.
  • Slide unit into bracket until tab locks into hole.
  • Inspect electrical connectors for brake fluid contamination, clean with alcohol as needed, then connect electrical connectors to ECU.

ISOLATION/DUMP VALVE ASSEMBLY

  • Disconnect brake lines from control valve, the plug lines and open fittings.
  • Remove bolts (25) securing...

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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 -> Fuel Pressure Relief -> Except Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Tracker & Uplander -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.

Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.

After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.

Engines Less Fuel Pressure ...

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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+.

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...

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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 -> Service Four Wheel Drive (4WD) System Warning Lamp ->
Vehicle: 1990 GMC S15 Pickup 4.3 V6 GAS

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

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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+

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 GMC S15 Pickup 2.8 V6 GAS

Inlet

  • Drain cooling system into a suitable container.
  • Reposition hose clamp at heater core.
  • Remove inlet heater hose from heater core.
  • Reposition hose clamp at cylinder head.
  • Remove inlet heater hose from cylinder head.
  • Remove hose from vehicle.
  • Reverse procedu...

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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 2.8 V6 GAS

  • Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...

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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+.

Behind RH Corner Of I/P Diagram for 1990 GMC S15 Pickup  4.3 V6 GASBehind RH Corner Of I/P Diagram for 1990 GMC S15 Pickup 4.3 V6 GAS

Components on diagram:
  • Digital Ratio Adapter Controller
  • Connector C309
  • ECM Module
  • Connector C363
  • Top Of Engine Diagram for 1990 GMC S15 Pickup  2.8 V6 GASTop Of Engine Diagram for 1990 GMC S15 Pickup 2.8 V6 GAS

    Components on diagram:
  • Oil Pressure Switch
  • Engine Coolant Temperature Sensor
  • Oil Pressure Sensor
  • Engine Coolant Temperature Switch
  • 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.

    1990 GMC S15 Pickup  2.5 L4 GAS Wiring Diagram1990 GMC S15 Pickup 2.5 L4 GAS Wiring Diagram

    Components on diagram:
  • Left Front Speaker
  • Right Front Speaker
  • Antenna
  • Radio Receiver
  • 1986 GMC S15 Pickup  2.5 L4 GAS Wiring Diagram1986 GMC S15 Pickup 2.5 L4 GAS Wiring Diagram

    Components on diagram:
  • Left Front Speaker
  • Right Rear Speaker
  • Right Front Speaker
  • Left Rear Speaker
  • Antenna
  • 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: INFO - TIRE CHARACTERISTICS OF GM ORIGINAL EQUIPMENT TIRES - REVISED
    Vehicle: 1987 GMC S15 Pickup 2.5 L4 GAS

    Auto Systems:
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • Document: TOP TIER DETERGENT GASOLINE - DEPOSITS, FUEL ECONOMY, NO START, POWER, PERFORMANCE, STALL CONCERNS - REVISED
    Vehicle: 1986 GMC S15 Pickup 2.5 L4 GAS

    Symptoms:
  • Driveability
  • Starting Problems
  • Auto Systems:
  • Fuel Sys, Driveability, Filters (Air & Fuel)
  • 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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