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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
Power Brake Units -> Delco Brake Booster -> General Service
Vehicle: 2008 GMC Sierra 1500 SLT 5.3 V8 GAS
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...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2008 GMC Sierra 1500 WT 4.8 V8 GAS
- Raise and support vehicle.
- Remove wheel and tire assembly.
- Remove drive axle center cap, if equipped.
- Insert a drift or large screwdriver through brake caliper into one of the brake rotor vanes in order to prevent drive axle wheel drive shaft from turning.
- Remove nut and washer from hub. Do not reuse nut. A new nut must be used when installing wheel drive shaft.
- Using axle remover tool No. J 45859 or equivalent, press wheel drive shaft from hub.
- Remove bolts securing wheel drive s...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Component Locations
Vehicle: 2008 GMC Sierra 1500 WT 5.3 V8 FLEX
Refer to ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
Starter, Replace
Vehicle: 2008 GMC Sierra 1500 SLE 5.3 V8 FLEX
- Disconnect battery ground cable.
- Raise and support vehicle.
- On models equipped with skid plate, remove skid plate mounting bolts and skid plate.
- On all models, remove front transmission cover bolt.
- Remove starter motor mounting bolts.
- Disconnect engine wiring harness electrical connector from oil level sensor.
- Slide starter forward until it clears transmission, then properly support starter. Avoid cable and wiring damage. DO NOT suspend starter by cables or wires attached to solenoid terminals. Use a rope or mechanics wire to suspend starter.
- Lower vehicle half way.
- Remove right front ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2008 GMC Sierra 1500 AUTOMOBILES
General Motors Corp./Saturn Trucks -> StabiliTrak Control System Warning Lamp ->
Vehicle: 2008 GMC Sierra 1500 SLE 5.3 V8 FLEX
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 2008 GMC Sierra 1500 AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2008 GMC Sierra 1500 SLT 5.3 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+.
 Transfer Case Diagram for 2008 GMC Sierra 1500 SLT 5.3 V8 GASComponents on diagram: |
 Transmission Components Diagram for 2008 GMC Sierra 1500 SLE 5.3 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 WT 4.3 V6 GAS 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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