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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+

    Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
    Vehicle: 1998 GMC K2500 Pickup 5.7 V8 GAS

    [[table data]]

    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+.

    POWER BRAKE UNITS, GENERAL MOTORS -> Tracker Brake Booster -> BOOSTER SERVICE -> ASSEMBLE -> DISASSEMBLE
    Vehicle: 1990 GMC V1500 Suburban 6.2 V8 DIESEL

    DISASSEMBLE

    • Remove pushrod clevis and locknut.
    • Install brake booster to brake mounting fixture, Fig. . Ensure booster vacuum pipe is clear of mounting fixture base and the booster mounting nuts are not over tightened.
    • Turn fixture handle until No. 1 and No. 2 body tabs are aligned, Fig. .
    • Remove booster from fixture, then separate body No. 1 and No. 2. This step must be performed with care because there is spring pressure between body No. 1 and No. 2.
    • Remove booster piston spring, piston rod, boot, air cleaner and air cleaner separator from body No. 2.
    • Remove valve stopper key cush...

    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 Filter Scheduled Maintenance -> 1988-06 C/K, G & R/V Series w/Diesel Engines -> Normal Service -> Severe Service
    Vehicle: 1994 GMC K1500 Pickup Sierra XC 6.5 V8 DIESEL

    Normal Service

    Repl...

    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+.

    DRIVESHAFT, Replace -> Front -> Front, All Except NP8 Axle -> Front, NP8 Axle -> One Piece Driveshaft -> Rear -> Three Piece Driveshaft -> Two Piece Driveshaft
    Vehicle: 1997 GMC K2500 Pickup Sierra 5.7 V8 GAS

    Front

    Front, All Except NP8 Axle
    • Raise and support vehicle.
    • Remove front differential carrier shield, if used.
    • Reference mark relationship of propeller shaft to front axle and transfer case flange.
    • Remove bolts and retainers from front axle.
    • Remove bolts and retainers from transfer case.
    • Remove propeller shaft. When removing propeller shaft, do not attempt to remove shaft by pounding on yoke ears or using a tool between yoke and universal joint. If propeller shaft is removed by using such means, injection joints may fracture and lead to premature failure of joint.
    • Compress propeller...

    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 -> Keyless Entry Transmitter Or DIC Method -> Scan Tool Method
    Vehicle: 2008 GMC Sierra 3500 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...

    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+.

    Alternator, Replace
    Vehicle: 1992 GMC K2500 Pickup Sierra 6.2 V8 DIESEL

    • Disconnect battery ground cable.
    • Disconnect terminal plug and battery lead from rear of alternator.
    • Remove accessory drive belt.
    • Remove alternator mounting bolts.
    • Separate alternator from mount...

    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: 2002 GMC Sierra 3500 6.6 V8 DIESEL

    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 -> Low Coolant Lamp ->
    Vehicle: 1993 GMC K3500 Pickup Sierra XC 6.5 V8 DIESEL

    This lamp should light when engine coolant level in the radiator drops below a predetermined le...

    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+

    Heater Hose, Replace -> Bypass -> Inlet -> Outlet
    Vehicle: 2002 GMC Savana 3500 8.1 V8 GAS

    Inlet

    • Drain cooling system into a suitable container.
    • Remove upper fan shroud.
    • Remove accumulator.
    • Reposition heater core inlet hose clamp at coolant bypass valve.
    • Remove hose from coolant bypass valve.
    • Reposition heater hose inlet clamp at heater core.
    • Remove heater inlet hose from heater core.
    • Remove hose from vehicle.
    • Reverse procedure to install.

    Outlet

    • Drain cooling system into a suitable container.
    • Remove upper fan shroud.
    • Remove accumulator.
    • Reposition heater hose ou...

    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: 2007 GMC Sierra 1500 SLT 5.3 V8 FLEX

    • Rotate tensioner clockwise to release belt tension using suitable wrench, then remove belt.
    • Route belt over pulleys excep...

    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+.

    Passenger Door Diagram for 2005 GMC Sierra Denali  6.0 V8 GASPassenger Door Diagram for 2005 GMC Sierra Denali 6.0 V8 GAS

    Components on diagram:
  • Door Speaker
  • Door
  • Heated Seat Switch
  • Tweeter Speaker
  • Door Module
  • Body Components Diagram for 2007 GMC Sierra 1500 SLE 6.0 V8 GASBody Components Diagram for 2007 GMC Sierra 1500 SLE 6.0 V8 GAS

    Components on diagram:
  • Heated Passenger Seat Switch
  • Passenger Outside Rearview Mirror
  • 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.

    1993 GMC C2500 Pickup Sierra XC 6.5 V8 DIESEL Wiring Diagram1993 GMC C2500 Pickup Sierra XC 6.5 V8 DIESEL Wiring Diagram

    Components on diagram:
  • License Lamp
  • Light Switch
  • LH License Lamp
  • RH License Lamp
  • 2005 GMC Canyon Z85 SLE 2.8 L4 GAS Wiring Diagram2005 GMC Canyon Z85 SLE 2.8 L4 GAS Wiring Diagram

    Components on diagram:
  • Instrument Panel Cluster
  • Data Link Connector
  • Clutch Switch
  • Powertrain Control Module
  • Turn Signal/ Multi-Function Switch
  • 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: REPLACEMENT OF KEYS, KEY NUMBERS AND/OR SECURITY CHIPS
    Vehicle: 1986 GMC C25/C2500 Suburban 5.7 V8 GAS

    Auto Systems:
  • Electronic Devices, Computers, PROMS, Sensors
  • Glass, Doors, Hood, Decklid, Tailgate, Liftgate, Locks
  • Document: BRAKE CALIPERS - NEW FRONT - R&R PROC FOR LEAD COND
    Vehicle: 1987 GMC R1500 Pickup 6.2 V8 DIESEL

    Symptoms:
  • Pull, Grab
  • Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • 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 details about 2006 GMC Sierra 1500 Grille Assembly2006 GMC Sierra 1500 Grille Assembly, With emblem provision and turn signal holes; A high quality, OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $128.64

    Click here to view more details about 1998 GMC K1500 Grille Assembly1998 GMC K1500 Grille Assembly, With emblem provision and headlight holes; A high quality, OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $39.49

    Click here to view more details2005 GMC Yukon Hvac Heater Core Rear, Hvac Heater Core; Rear; V8 Engine, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $109.45

    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 details2005 GMC Yukon XL 1500 Used Suspension Compressor/Pump, Level Control Compressor, 15254590, Very Good.

    Source: Used Auto Parts Store

    $385.00

    Click here to view more details1980 GMC C1500 Suburban Used Wiper Motor Front.

    Source: Used Auto Parts Store

    $70.00
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