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GMC CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW
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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!
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+
General Service Domestic Vehicles -> 2001-02 -> Leak Test -> Electronic Leak Detectors -> Fluid Leak Detectors
Vehicle: 2001 GMC Savana 2500 5.7 V8 BI-FUEL
Testing the refrigerant system for leaks is one of the most important phases of troubleshooting. One or more of the methods outlined will prove useful in detecting leaks or checking connections if service work is performed. Before beginning any leak test, attach a manifold gauge set and note pressure. If little or no pressure is indicated, a partial charge must be installed. Check all connections, compressor head gasket, oil filler plug and compressor shaft seal for leaks.
For R-134a system an electronic type leak detector is recommended.
Electronic Leak Detectors
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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 -> Caliper Service -> Assemble -> Disassemble -> Inspection -> Installation -> Removal
Vehicle: 1993 GMC C2500 Pickup Sierra XC 7.4 V8 GAS
Removal
- Siphon 2/3 of brake fluid from master cylinder reservoir serving front disc brakes.
- Raise vehicle, support on jack stands and remove front wheels.
- Bottom caliper piston in bore. Insert a screwdriver between inboard shoe and piston, then pry piston back into bore. The piston can also be bottomed in the bore with a large C-clamp, Fig. .
- Remove support key retaining screw.
- Drive caliper support key and spring from steering knuckle with a suitable drift and hammer, Fig. .
- Lift caliper from anchor plate and off rotor, Fig. . Hang caliper from coil spring with wire. Do not allow cal...
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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 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: 2003 GMC Sierra 1500 HD 6.0 V8 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 AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported GMC cars and light trucks from 1990+.
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2001 GMC Sierra 3500 8.1 V8 GAS
Never clamp propeller shaft tubing in a vise. Clamping could dent or deform the tube causing an imbalance or unsafe condition. Always clamp on one of the yokes and support the shaft horizontally. Avoid damaging the slip yoke sealing surface. Nicks may damage the bushing or cut the lip seal.
Disassemble
- Support propeller shaft in a line horizontal with table of a press.
- Mark propeller shaft in order to show which end connects to transmission and which end goes to rear axle.
- On models equipped with external snap ring retainers, proceed as follows:
- Disassemble snap rings by ...
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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+.
Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Aids -> Diagnostic Check -> Diagnostic Tests -> Intermittent & Poor Connections -> Intermittents -> Poor Connections -> Test Procedures
Vehicle: 2006 GMC Sierra 1500 Hybrid 5.3 V8 ELECTRIC/GAS
Accessing Diagnostic Trouble Codes
Connect a suitably programmed scan tool to DLC (Data Link Connector) and follow manufacturer's instructions.
Diagnostic Tests
Test Procedures
Refer to Figs. through for diagnostic test procedures.
Diagnostic Check
- Check for aftermarket devices which could affect the operation of the TPMS to verify that none are installed.
- Check the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
- Ensure that the scan tool selected front and rear tire pressure parameters are correct compared to the tire...
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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 Savana 3500 4.8 V8 GAS
- Disconnect battery ground cable.
- Remove coolant reservoir and air cleaner.
- Remove upper fan shroud.
- Remove drive belt.
- Remove heater hose pipe from alternator and oil fill tubes from support bracket.
- Remove alternator ...
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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: 2001 GMC Sierra 2500 HD 8.1 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 -> Inlet -> Outlet
Vehicle: 1990 GMC G15/G1500 VAN Rally 5.0 V8 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 thermostat housing.
- Remove inlet heater hose from thermostat housing.
- Remove hose from vehicle.
- Reverse proc...
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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: 2008 GMC Canyon WT 3.7 L5 GAS
- Rotate tensioner clockwise, using suitable 3/8 inch breaker bar.
- Slide drive belt from water pump pul...
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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+.
 License Lamps Diagram for 2004 GMC Yukon 4.8 V8 GASComponents on diagram: |
 Engine Components Diagram for 2008 GMC Sierra 1500 WT 5.3 V8 GASComponents on diagram: |
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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.
 1995 GMC C3500 Pickup Sierra 5.7 V8 GAS Wiring DiagramComponents on diagram: |
 1994 GMC K2500 Pickup Sierra 6.5 V8 DIESEL Wiring DiagramComponents on diagram: |
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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+.
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Document: SQUEEZE TYPE RESISTANCE SPOT WELDING/EQUIPMENT - REVISED Vehicle: 2002 GMC Sierra 2500 6.0 V8 GAS Auto Systems: |
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Document: RETROFITTING R-12 VEHICLES TO R-134A Vehicle: 1986 GMC Caballero 4.3 V6 GAS Auto Systems: |
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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
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