GMC REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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GMC 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 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 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 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 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 cars and light trucks from 1990+

Component Replacement & Adjustment -> Light Duty Trucks & Vans -> Blower Motor, Replace -> Astro & Safari -> Bravada, S & T Series -> C & K Series -> Front -> G Series -> Montana, Silhouette, Trans Sport & Venture -> P Series -> Rear -> Tracker
Vehicle: 1999 GMC C2500 Suburban 6.5 V8 DIESEL

Astro & Safari
Front
  • Remove air cleaner assembly.
  • Disconnect electrical connector, then remove recovery and windshield washer fluid reservoir assembly.
  • Remove two accoustic cover retaining screws in blower motor area.
  • Cut acoustic cover between five clip lands, Fig. . Retain piece of acoustic cover for reassembly.
  • Remove cooling tube from motor.
  • Remove blower motor to case attaching screws.
  • Remove blower motor from case.
  • Reverse procedure install.
Rear
  • Remove left quarter panel swing-out win...

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BRAKE SERVICE PROCEDURES FOR GMC AUTOMOBILES

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

Disc Brakes -> Bendix Single Piston Sliding Caliper -> Precautions -> Brake Disc Service -> Brake Lines & Linings -> Brake Roughness -> General
Vehicle: 1994 GMC C1500 Suburban 5.7 V8 GAS

Brake Lines & Linings

Remove one of the front wheels and inspect the brake disc, caliper and linings.

Do not allow any oil or grease on the linings. It is recommended that all linings be replaced in sets when worn or damaged.

If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.

Brake Roughness

The most common cause of brake chatter on disc brakes is a variation in thickness of the disc. If roughness or vibration is encountered during highway operation or if pedal pumping is experienced at low speeds, the disc may have excessive thickne...

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FUEL FILTER REPLACEMENT PROCEDURES FOR GMC AUTOMOBILES

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

General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Replacement -> Gasoline Engines Except Equinox, Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Uplander & Vue (2004-06) & 2004-06 Envoy, Rainier & TrailBlazer -> Returnless Fuel System
Vehicle: 1997 GMC K1500 Pickup Sierra XC 5.0 V8 GAS

Returnless Fuel System

On models equipped with fuel injected engines, relieve fuel system pressure as outlined under "Fuel System Pressure Relief."

On models equipped with metal collar quick disconnect connectors, GM tool No. J37088-A, or equivalent, will be required to disconnect the connector. Pri...

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

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

CV AXLE SHAFT, Replace
Vehicle: 2005 GMC Safari 4.3 V6 GAS

Observe and accurately reference mark the positions of all driveline components relative to the propeller shaft prior to disassembly. These components include the propeller shafts, drive axles, pinion flange, inner axle shafts, etc. Reassemble all components in the exact relationship the components had to one another prior to disassembly. Follow the specifications, torque values and any measurement made prior to disassembly in order to maintain the factory system balance of the driveline components. System balance provides a smoother running driveline operation.

  • Unlock ste...

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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR GMC AUTOMOBILES

Description, component locations, reset procedures, relearn procedures, diagnosis and testing, wiring diagrams, component replacement, and identification of vehicles equipped and not equipped with tire pressure monitoring system for most domestic and imported GMC cars and light trucks sold in the U.S. from mid 1990's+.

Relearn Procedures -> Keyless Entry Transmitter Or DIC Method -> Scan Tool Method
Vehicle: 2009 GMC Sierra 2500 HD SLE 6.0 V8 GAS

Keyless Entry Transmitter Or DIC Method

  • On models with standard ignition switch, place the ignition switch in the On position.
  • On models with keyless ignition switch, place the ignition switch in the Accy position.
  • On all models, using the keyless entry transmitters press the lock and unlock buttons at the same time until a horn chirp sounds indicating the learn mode has been actuated. The left front turn signal will also be illuminated.
  • Using the DIC (Driver Information Center) press and release the Info button until the Tire Learn message is indicated on the DIC display. Depres...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR GMC AUTOMOBILES

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

Alternator, Replace
Vehicle: 2005 GMC Canyon Z71 Fleet 2.8 L4 GAS

  • Disconnect battery ground cable.
  • Remove drive belt.
  • Raise and support vehicle, then remove left front wheel and tire assembly.
  • Remove left wheelhouse liner.
  • Disengage air conditioning compressor electrical connector from bracket.
  • Remove lower air conditioning compressor mounting bolts, leave upper mounting bolt with air conditioning compressor.
  • Lower vehicle.
  • Remove alternator output battery ter...

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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR GMC AUTOMOBILES

Cabin air filter locations and replacement procedures with corresponding images for most domestic and imported GMC cars and light trucks sold in the U.S. as equipped to the current model year.

Cabin Air Filter Service -> General Motors Corp./Saturn -> 1999-2007 Silverado, Sierra, 2000-07 Denali, Suburban, Tahoe, Yukon, Yukon XL, 2001-07 Escalade & 2002-07 Avalanche
Vehicle: 2006 GMC Yukon SLT 5.3 V8 GAS

Under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.

  • Remove the righthand instrument panel hush panel.
  • Remove the A/C and heater modul...

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MAINTENANCE LAMP RESET PROCEDURES FOR GMC AUTOMOBILES

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

General Motors Corp./Saturn Trucks -> StabiliTrak Control System Warning Lamp ->
Vehicle: 1995 GMC G15/G1500 VAN Vandura 5.0 V8 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 AUTOMOBILES

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

Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1994 GMC K2500 Suburban 7.4 V8 GAS

Inlet

  • Remove air cleaner.
  • Drain cooling system into a suitable container.
  • Remove heater hose support clamp bolt.
  • Reposition heater core inlet hose clamp at engine.
  • Remove hose from engine.
  • Reposition heater hose inlet clamp at heater core.
  • Remove heater inlet hose from heater core.
  • Remove hose from vehicle.
  • Reverse procedure to install.

Outlet

  • Remove air cleaner.
  • Drain cooling system into a suitable container.
  • Remove heater hose support clamp bolt.
  • Reposition heater hose...

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SERPENTINE BELT SERVICE PROCEDURES FOR GMC AUTOMOBILES

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

Serpentine Drive Belt, Replace
Vehicle: 1993 GMC C3500 Pickup Sierra XC 7.4 V8 GAS

  • Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...

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COMPONENT LOCATION DIAGRAMS FOR GMC AUTOMOBILES

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

Cruise Control Components  Diagram for 1990 GMC Safari  4.3 V6 GASCruise Control Components Diagram for 1990 GMC Safari 4.3 V6 GAS

Components on diagram:
  • Cruise Control Servo
  • Connector C171
  • HVAC Module-Rear Auxiliary Diagram for 2006 GMC Yukon SLE 4.8 V8 GASHVAC Module-Rear Auxiliary Diagram for 2006 GMC Yukon SLE 4.8 V8 GAS

    Components on diagram:
  • A/C Module
  • Heater Duct Assembly
  • Inner Side Body Panel
  • A/C Duct Assembly
  • Auxiliary Heater Module
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    WIRING DIAGRAMS FOR GMC AUTOMOBILES

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

    1994 GMC K2500 Pickup Sierra XC 6.5 V8 DIESEL Wiring Diagram1994 GMC K2500 Pickup Sierra XC 6.5 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Low Battery Relay
  • Medium Blower Relay
  • High Blower Relay
  • A/C Controller
  • Blower Resistor A
  • 2004 GMC Envoy  4.2 L6 GAS Wiring Diagram2004 GMC Envoy 4.2 L6 GAS Wiring Diagram

    Components on diagram:
  • Headlamp Switch
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    TECHNICAL SERVICE BULLETINS FOR GMC AUTOMOBILES

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

    Document: TRAILER BRAKES APPLIED WHEN HEADLIGHTS/PARK LIGHTS ARE ON, BRAKE CONTROLLER ILLUMINATION - REVISED
    Vehicle: 2001 GMC Sierra 3500 6.0 V8 GAS

    Symptoms:
  • Erratic Operation
  • Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • Chassis Electrical, Wiring, Fuses & Breakers, Wipers, Motors
  • Document: DEXRON-IIE ATX FLUID - GENERAL INFORMATION
    Vehicle: 1985 GMC S15 Pickup 1.9 L4 GAS

    Auto Systems:
  • Chemicals, Antifreeze, Additives
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    COMPONENT/PARTS SPECIFICATIONS FOR GMC AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most GMC 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 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 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 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 SPECIFICATIONS DATA!

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