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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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    C1000 PickupC15/C1500 PickupC15/C1500 SuburbanC1500 Pickup
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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!
    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 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+

    Cooling Fans -> Light Duty Trucks & Vans -> COMPONENT REPLACEMENT -> C, K, G & P Series -> ELECTRIC COOLING FAN -> Lumina APV, Silhouette & Trans Sport
    Vehicle: 1995 GMC C1500 Pickup Sierra 6.5 V8 DIESEL

    ELECTRIC COOLING FAN

    Lumina APV, Silhouette & Trans Sport
    • Remove lamp harness from fan frame, then disconnect fan connector.
    • Remove fan attaching bolts.
    • Remove fan and frame as an assembly.
    • Reverse procedure t...

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

    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 -> Delco Dual Piston Sliding Caliper -> Tightening Specifications
    Vehicle: 2007 GMC Savana 1500 5.3 V8 GAS

    [[table data]]

    CLICK HERE TO GET FULL ACCESS TO GMC BRAKE SERVICE PROCEDURES

    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 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: 1994 GMC K1500 Pickup Sierra 6.5 V8 DIESEL

    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 ...

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

    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: 2007 GMC Yukon XL 1500 SLT 5.3 V8 FLEX

    • Raise and support vehicle.
    • Remove wheel and tire assembly.
    • Remove drive axle center cap, if equipped.
    • Insert a drift or large screwdriver through brake caliper into one of the brake rotor vanes in order to prevent drive axle wheel drive shaft from turning.
    • Remove nut and washer from hub. Do not reuse nut. A new nut must be used when installing wheel drive shaft.
    • Using axle remover tool No. J 45859 or equivalent, press wheel drive shaft from hub.
    • Remove bolts securing wheel drive s...

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

    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
    Vehicle: 2006 GMC Sierra 3500 SL 6.6 V8 DIESEL

    • Apply the Parking brake, then place the ignition switch in the On position.
    • Cycle the headlamp switch from Off to Parking Lamp position 4 times within 4 seconds.
    • The horn should chirp twice and the low tire pressure warning indicator should begin to flash indicating the system is in the learn mode.
    • If GM tool No. J-46079 or equivalent is available, starting with the left front tire, hold the antenna of the tool No. J-46079 near the valve stem on the wheel, then press the activate button and wait for the horn to chirp.
    • If the tool is not available, starting with the left front tir...

    CLICK HERE TO GET FULL ACCESS TO GMC TIRE PRESSURE MONITORING SYSTEM PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR GMC AUTOMOBILES

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

    Starter, Replace
    Vehicle: 1993 GMC K3500 Pickup Sierra XC 6.2 V8 DIESEL

    • Disconnect battery ground cable.
    • Remove starter braces or heat shields, if equipped.
    • Disconnect starter solenoid electrical connectors.
    • Raise and support vehicle.
    • Remove at...

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

    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: 2004 GMC Sierra 1500 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...

    CLICK HERE TO GET FULL ACCESS TO GMC CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES

    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 -> Reduce Engine Power Indicator Lamp ->
    Vehicle: 1992 GMC G25/G2500 VAN Rally 5.0 V8 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 MAINTENANCE LAMP RESET PROCEDURES

    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+

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 2005 GMC Yukon SLE 4.8 V8 GAS

    Lower

    • Drain cooling system into a suitable container.
    • Remove air cleaner outlet duct clamps at throttle body and mass air flow (MAF)/intake air temperature (IAT) sensor.
    • Remove radiator inlet hose clip from outlet hose.
    • Remove air cleaner outlet duct.
    • Reposition hose clamp from water pump housing.
    • Remove radiator outlet hose from water pump housing.
    • Reposition hose clamp from radiator.
    • Remove radiator outlet hose from radiator and from vehicle.
    • Reverse procedure to install.

    Upper

    • Drain cooling system into a suitable ...

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

    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 ...

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

    COMPONENT LOCATION DIAGRAMS FOR GMC AUTOMOBILES

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

    Instrument Panel and Engine Compartment Components Diagram for 2008 GMC Sierra 1500 WT 4.3 V6 GASInstrument Panel and Engine Compartment Components Diagram for 2008 GMC Sierra 1500 WT 4.3 V6 GAS

    Components on diagram:
  • Left Front Fender
  • Ground G110
  • X103
  • J113
  • X109
  • Steering Column Diagram for 2007 GMC Sierra 1500 Classic SLE 4.8 V8 GASSteering Column Diagram for 2007 GMC Sierra 1500 Classic SLE 4.8 V8 GAS

    Components on diagram:
  • Turn Signal Switch
  • Ignition Switch
  • Horn Switch
  • Hazard Warning Switch
  • Ignition Key Alarm Switch
  • CLICK HERE TO GET FULL ACCESS TO GMC PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR GMC AUTOMOBILES

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

    2002 GMC Yukon  4.8 V8 GAS Wiring Diagram2002 GMC Yukon 4.8 V8 GAS Wiring Diagram

    Components on diagram:
  • HVAC Control Module
  • HVAC Control Assembly Front Auxiliary
  • HVAC Control Assembly Rear Auxiliary
  • 2006 GMC Sierra 3500 WT 8.1 V8 GAS Wiring Diagram2006 GMC Sierra 3500 WT 8.1 V8 GAS Wiring Diagram

    Components on diagram:
  • Data Link Connector
  • Recirculation Indicator
  • Mode Actuator
  • HVAC Control Module
  • Recirculation Actuator
  • CLICK HERE TO GET FULL ACCESS TO GMC WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR GMC AUTOMOBILES

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

    Document: WARRANTY ADMIN - EXPEDITING PARTS - REV
    Vehicle: 1986 GMC K35/K3500 Pickup 7.4 V8 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: TIRE PUNCTURE REPAIR PROCEDURES FOR ALL CARS AND LIGHT DUTY TRUCKS - REVISED
    Vehicle: 1988 GMC G25/G2500 VAN Vandura 5.7 V8 GAS

    Auto Systems:
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • CLICK HERE TO GET FULL ACCESS TO GMC TECHNICAL SERVICE BULLETINS!

    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!

    Shop online for auto body parts, engines, wheels, lights...

    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 2000 GMC Yukon Door Handle, Front, Passenger Side2000 GMC Yukon Door Handle, Front, Passenger Side, With keyhole; A high quality, OE replacement door handle; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $18.05

    Click here to view more details2012 GMC Sierra 2500-3500 Pickup 18" X 8" Steel Wheel, STEEL WHEEL, 18 X 8, 8 STUDS/LUGS, 180MM BOLT, 8 SLOTS, ALL SILVER, NEW, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $205.75

    Click here to view more details2002 GMC C3500 Pickup HD Chassis Cab V8, 8.1 L, 496 CID Rebuilt Engine, Roller Vortec, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $3,265.00

    Click here to view more details1988 GMC C1500 Pickup Used Wiper Motor Front, ebay.

    Source: Used Auto Parts Store

    $70.00

    Click here to view more details1988 GMC C1500 Pickup Used A/C Compressor, 5.7, AUTO, 4X2 serpentine drive, Very Good.

    Source: Used Auto Parts Store

    $159.00
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