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2008 GMC Sierra 1500 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Brake Service
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2008 GMC Sierra 1500 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 1500 automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Brake Pad Service
Vehicle: 2008 GMC Sierra 1500 SLT 5.3 V8 FLEX
The procedures to remove and install the brake pads are outlined i...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2008 GMC Sierra 1500 SLE 5.3 V8 FLEX
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 2008 GMC Sierra 1500 AUTOMOBILES
Component Locations
Vehicle: 2008 GMC Sierra 1500 SLE 4.8 V8 GAS
Refer to ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Alternator, Replace
Vehicle: 2008 GMC Sierra 1500 WT 5.3 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...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
General Motors Corp./Saturn Trucks -> Service Four Wheel Drive (4WD) System Warning Lamp ->
Vehicle: 2008 GMC Sierra 1500 SLE 5.3 V8 FLEX
This lamp should light for approximately 6-8 seconds when the ignition is turned On as a bulb check. If the ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2008 GMC Sierra 1500 SLE 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.
- 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...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2008 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...
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COMPONENT LOCATION DIAGRAMS FOR 2008 GMC Sierra 1500 AUTOMOBILES
Component location diagrams for most 2008 GMC Sierra 1500 cars and light trucks sold in the U.S. from 1990+.
 Chassis Harness Diagram for 2008 GMC Sierra 1500 SLE 4.8 V8 GASComponents on diagram: |
 Underbody Components Diagram for 2008 GMC Sierra 1500 SLE 4.8 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2008 GMC Sierra 1500 AUTOMOBILES
OEM drawn wiring diagrams for most 2008 GMC Sierra 1500 cars and light trucks sold in the U.S.
 2008 GMC Sierra 1500 WT 5.3 V8 FLEX Wiring DiagramComponents on diagram: |
 2008 GMC Sierra 1500 SLE 5.3 V8 FLEX Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2008 GMC Sierra 1500 AUTOMOBILES
OEM TSB listings for most 2008 GMC Sierra 1500 cars and light trucks sold in the U.S. from 1985+.
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Document: EI07082-Power Steering Fluid Leaking from Power Steering Gear/Rack Assembly Vehicle: 2008 GMC Sierra 1500 WT 4.3 V6 GAS Symptoms: |
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Document: Second Order Prop Shaft Vibration Or Launch Shudder Vehicle: 2008 GMC Sierra 1500 WT 4.3 V6 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2008 GMC Sierra 1500 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2008 GMC Sierra 1500 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 1500 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 1500 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 1500 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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