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GMC Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD cars and light trucks from 1990+

    Component Replacement & Adjustment -> Light Duty Trucks & Vans -> Accumulator, Replace -> Astro & Safari -> Bravada, S & T Series -> C & K Series -> G Series
    Vehicle: 2001 GMC Sierra 2500 HD 6.0 V8 GAS

    Astro & Safari
    • Remove air cleaner.
    • Recover refrigerant as outlined under .
    • Remove accumulator nut from evaporator.
    • Remove compressor suction hose from accumulator.
    • Remove O-ring seals.
    • Disconnect electrical connectors.
    • Remove pressure switch.
    • Remove accumulator mounting bracket bolt, then the bracket.
    • Remove accumulator.
    • Reverse procedure to install.
    Bravada, S & T Series
    • Recover refrigerant as outlined under .
    • Disconnect electrical connector from A/C pressure switch.
    • Remove A/C low pressu...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported GMC Sierra 2500 HD cars and light trucks from 1990+.

    Power Brake Units -> Delco Brake Booster -> General Service
    Vehicle: 2002 GMC Sierra 2500 HD 6.6 V8 DIESEL

    Certain general service procedures apply, regardless of whether the brakes are vacuum or hydraulically assisted. Only top quality, clean brake fluid should be used. More seals and valves are used with power brake systems than with ordinary brakes, so an inferior brake fluid will do much more damage. For the same reason, ensure all dirt is kept out of the system. Additionally, on models with hydraulic assist brakes, care must be taken not to mix the fluids of the booster hydraulic system and brake hydraulic system as the fluids are not compatible.

    If the power unit fails, the brak...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Fuel filter replacement procedures with corresponding images for most domestic and imported GMC Sierra 2500 HD cars and light trucks sold in the U.S. for 1980+.

    General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Replacement -> 6.6L Diesel Engine
    Vehicle: 2002 GMC Sierra 2500 HD 6.6 V8 DIESEL

    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. Prior to reconnecting the connector, apply a few drops of clean motor oil to the male pipe ends.

    On models equipped with plastic collar quick disconnect connectors, squeeze the connector plastic retainer release tabs to release the connector. Prior to reconnecting the connector, apply a few drops of clean motor...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Includes CV axle, universal joint, and driveline replacement, for domestic and imported GMC Sierra 2500 HD cars and light trucks from 1990+.

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
    Vehicle: 2005 GMC Sierra 2500 HD 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 ...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR GMC Sierra 2500 HD 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 Sierra 2500 HD cars and light trucks sold in the U.S. from mid 1990's+.

    Reset Procedures
    Vehicle: 2006 GMC Sierra 2500 HD SLT 8.1 V8 GAS

    When the TPMS detects a significant loss of tire pressure, the CHECK TIRE PRESSURE message is displayed on the DI...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD TIRE PRESSURE MONITORING SYSTEM PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Includes starter and alternator replacement procedures for domestic and imported GMC Sierra 2500 HD cars and light trucks from 1990+.

    Alternator, Replace
    Vehicle: 2009 GMC Sierra 2500 HD SLE 6.0 V8 GAS

    • Disconnect battery ground cable.
    • Remove intake manifold sight shield.
    • Remove drive belt.
    • Disconnect engine harness electrical connector from alternator.
    • Reposition alternator battery jumper cable boot.
    • Remove alternator battery jumper cable nut from alternator.
    • Re...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Cabin air filter locations and replacement procedures with corresponding images for most domestic and imported GMC Sierra 2500 HD 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 2500 HD 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 Sierra 2500 HD CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Maintenance lamp reset procedures with corresponding images for most domestic and imported GMC Sierra 2500 HD 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: 2001 GMC Sierra 2500 HD 6.6 V8 DIESEL

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

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Includes radiator, cooling and heater hose replacement procedures for domestic and imported GMC Sierra 2500 HD cars and light trucks from 1990+

    Heater Hose, Replace -> Inlet -> Outlet
    Vehicle: 2006 GMC Sierra 2500 HD SL 6.0 V8 GAS

    Inlet

    • Drain cooling system into a suitable container.
    • Remove air intake tube.
    • Remove heater and surge tank hose from mounting clip.
    • Reposition heater core inlet hose clamp at engine coolant inlet fitting.
    • Remove hose from engine coolant inlet fitting.
    • Reposition heater hose inlet clamp at heater core.
    • Remove heater inlet hose from ...

    CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR GMC Sierra 2500 HD AUTOMOBILES

    Serpentine belt replacement procedures with corresponding images for most domestic and imported GMC Sierra 2500 HD cars and light trucks sold in the U.S. from 1990+.

    Serpentine Drive Belt, Replace
    Vehicle: 2009 GMC Sierra 2500 HD SLT 6.0 V8 GAS

    • 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 Sierra 2500 HD SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR GMC Sierra 2500 HD AUTOMOBILES

    Component location diagrams for most GMC Sierra 2500 HD cars and light trucks sold in the U.S. from 1990+.

    Lower Dash Diagram for 2006 GMC Sierra 2500 HD WT 6.6 V8 DIESELLower Dash Diagram for 2006 GMC Sierra 2500 HD WT 6.6 V8 DIESEL

    Components on diagram:
  • Data Link Connector
  • Fuse Block
  • Courtesy Lamp
  • Fuse Block Connector
  • Splice Pack SP-205
  • Body Components Diagram for 2007 GMC Sierra 2500 HD WT 6.0 V8 GASBody Components Diagram for 2007 GMC Sierra 2500 HD WT 6.0 V8 GAS

    Components on diagram:
  • Ground G201
  • CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR GMC Sierra 2500 HD AUTOMOBILES

    OEM drawn wiring diagrams for most GMC Sierra 2500 HD cars and light trucks sold in the U.S.

    2007 GMC Sierra 2500 HD SLE 6.0 V8 GAS Wiring Diagram2007 GMC Sierra 2500 HD SLE 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Body Control Module
  • Passenger Door Lock Switch
  • Driver Door Lock Switch
  • 2007 GMC Sierra 2500 HD WT 6.6 V8 DIESEL Wiring Diagram2007 GMC Sierra 2500 HD WT 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Wiper Switch
  • Washer Switch
  • Body Control Module
  • Turn Signal/Multifunction Switch
  • CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR GMC Sierra 2500 HD AUTOMOBILES

    OEM TSB listings for most GMC Sierra 2500 HD cars and light trucks sold in the U.S. from 1985+.

    Document: AVAILABILITY OF REAR WHEEL MUD FLAPS TO REDUCE DEBRIS BUILD-UP ON REAR BRAKE CALIPERS AND REAR WHEELS
    Vehicle: 2002 GMC Sierra 2500 HD 6.6 V8 DIESEL

    Auto Systems:
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • Brakes, Power Brakes, Traction Control
  • Finishes, Body Structure, Frame, Bumpers
  • Document: Procedure to Take Snapshot Data with a Tech 2A® and Upload Data to a Computer Using TIS Software
    Vehicle: 2006 GMC Sierra 2500 HD SLE 8.1 V8 GAS

    Auto Systems:
  • Electronic Devices, Computers, PROMS, Sensors
  • CLICK HERE TO GET FULL ACCESS TO GMC Sierra 2500 HD TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR GMC Sierra 2500 HD AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most GMC Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD 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 Sierra 2500 HD SPECIFICATIONS DATA!

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

    Click here to view more details about 2006 GMC Sierra 2500 HD Bed Rails2006 GMC Sierra 2500 HD Bed Rails, Made of stainless steel; Features solid die cast construction; Curved to match truck bed; Easy and quick no-drill installation..

    Source: Auto Body Parts Store

    $180.55

    Click here to view more details about 2002 GMC Sierra 2500 HD Bumper, Rear2002 GMC Sierra 2500 HD Bumper, Rear, With provisions for step pad and trailer hitch; A high quality, direct fit OE replacement bumper face bar..

    Source: Auto Body Parts Store

    $129.11

    Click here to view more details2009 GMC Envoy Pillar Post Covers, PILLAR POST COVERS, 6 PIECE SET , , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $44.76

    Click here to view more details2002 GMC Sierra 2500 HD V8, 6 L, 364 CID Rebuilt Engine, 6.0 V-8 Aluminum Heads, Warranty: 7-Year/70,000 Mile, .

    Source: Rebuilt Engines Store

    $2,099.00

    Click here to view more details2003 GMC Sierra 2500 HD Used A/C Compressor, 6.0, AUTO, 4X2, Very Good.

    Source: Used Auto Parts Store

    $125.00

    Click here to view more details2002 GMC Sierra 2500 HD Used Vacuum Pump, CHEV EXPRESS PR 35, 6.5 DIESEL, Very Good.

    Source: Used Auto Parts Store

    $204.00
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