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2008 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 2008 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!
    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 2008 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:

    BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Hydraulic Brake Systems -> Adjustments -> Height Sensing Proportioning Valve
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL

    Height Sensing Proportioning Valve

    The height sensing proportioning valve must be adjusted whenever the valve and/or linkage is disassembled or removed for service. In addition, adjustment should be inspected if excessive front wheel lock-up is experienced with a lower than desired brake application rate when vehicle is at or near maximum GVWR.

    • Raise and support vehicle, leave wheels on and allow axle to hang freely.
    • Remove lever retaining nut and disconnect lever from valve shaft, Fig. .
    • Rotate valve shaft to permit installation of correct adjustment gauge, Fig. , ensure D shaped hol...

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD BRAKE SERVICE PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL

    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 2008 GMC Sierra 2500 HD DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Component Replacement -> Installation -> Removal -> Tire Pressure Sensor (Snap In Style)
    Vehicle: 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESEL

    Tire Pressure Sensor (Snap In Style)

    Each tire pressure sensor has an internal power supply which has a service life of 10 years.

    Removal
    • Loosen the lug nuts.
    • Raise and support vehicle with jack stands, then remove the wheel and tire assembly.
    • Prior to dismounting the tire from the wheel, note the following precautions:
      • Position the bead breaking fixture 90, 180 and 270° from the valve stem when Separating the tire bead from the wheel.
      • Position the wheel and tire so the valve stem is situated at the 2 o'clock position relative to the head. The tire iron or pry bar can be inserted...

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD TIRE PRESSURE MONITORING SYSTEM PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Alternator, Replace
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS

    • Disconnect battery ground cable.
    • Disconnect positive crankcase ventilation hose from air cleaner outlet resonator.
    • Loosen air cleaner outlet resonator clamps at mass air flow intake air temperature sensor and at throttle body.
    • Remove air cleaner outlet resonator.
    • Remove drive belt using suitable tools.
    • Remove engine wiring harness clip from air conditioning compressor and condenser hose bracket.
    • Remove air conditioning compressor and condenser hose bracket bolt.
    • Remove heate...

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    General Motors Corp./Saturn Trucks -> All Wheel Drive (AWD) System Warning Lamp ->
    Vehicle: 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESEL

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

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Heater Hose, Replace -> Inlet -> Outlet
    Vehicle: 2008 GMC Sierra 2500 HD SLT 6.6 V8 DIESEL

    Inlet

    • Drain cooling system into a suitable container.
    • Remove air intake tube.
    • Remove heater and surge tank hose from mounting clip.
    • Release clamp on heater inlet hose at heater core.
    • Remove hose from heater core.
    • Release clamp on heater inlet hose at water pump.
    • Remove hose from water pump.
    • Remove hose from vehicle.
    • Reverse procedure to in...

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL

    • Rotate tensioner to release belt tension using a 1/2 inch breaker bar with a 5/8 inch socket placed on tensioner pulley, then remove belt.
    • Route be...

    CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    Component location diagrams for most 2008 GMC Sierra 2500 HD cars and light trucks sold in the U.S. from 1990+.

    Ambient Air Temperature Sensors Diagram for 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESELAmbient Air Temperature Sensors Diagram for 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESEL

    Components on diagram:
  • Ambient Air Temperature Sensor
  • HVAC Sensor
  • Radiator Core Support
  • Driver Seat Heating Elements Diagram for 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESELDriver Seat Heating Elements Diagram for 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL

    Components on diagram:
  • Heated Driver Seat Element
  • CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    OEM drawn wiring diagrams for most 2008 GMC Sierra 2500 HD cars and light trucks sold in the U.S.

    2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL Wiring Diagram2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Instrument Panel Cluster
  • Data Link Connector
  • Radio
  • Chime Module
  • HVAC Control Module
  • 2008 GMC Sierra 2500 HD SLT 6.6 V8 DIESEL Wiring Diagram2008 GMC Sierra 2500 HD SLT 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Body Control Module
  • RH Battery
  • Radio Fuse Block
  • CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    OEM TSB listings for most 2008 GMC Sierra 2500 HD cars and light trucks sold in the U.S. from 1985+.

    Document: Second Order Prop Shaft Vibration Or Launch Shudder
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS

    Symptoms:
  • Vibration
  • Document: Revised General Motors New Vehicle Tire Warranty Program
    Vehicle: 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 2500 HD TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2008 GMC Sierra 2500 HD AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2008 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 2008 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 2008 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 2008 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 2008 GMC Sierra 2500 HD SPECIFICATIONS DATA!

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

    Click here to view more details about 2010 GMC Sierra 2500 HD Bumper Bracket, Front, Driver Side2010 GMC Sierra 2500 HD Bumper Bracket, Front, Driver Side, A high quality, OE replacement bumper bracket; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $17.36

    Click here to view more details2010 GMC Sierra 2500 HD Bumper Bracket, Front, Driver Side, A high quality, OE replacement bumper bracket; With 2 years limited TrustBuilt warranty..

    Source: Auto Body Parts Store

    $22.19

    Click here to view more details about 2006 GMC Envoy Power Door Mirror, Passenger Side2006 GMC Envoy Power Door Mirror, Passenger Side, PASSENGER SIDE POWER DOOR MIRROR, WITH HEATED GLASS, MANUAL FOLD, WITH TURN SIGNAL LAMP, WITH MEMORY, PAINT TO MATCH, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $124.45

    Click here to view more details2004 GMC Sierra 2500 HD V8, 8.1 L, 495 CID Rebuilt Engine, Roller Vortec, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $3,265.00

    Click here to view more details2009 GMC Sierra 2500 HD Used Air Flow Meter/Sensor, 6.2, AUTO, 4X4, Very Good.

    Source: Used Auto Parts Store

    $77.00

    Click here to view more details2010 GMC Sierra 2500 HD Used Condenser Assembly, 5.3, COLUMN, RWD, Very Good.

    Source: Used Auto Parts Store

    $134.00
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