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2008 GMC Sierra Denali CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- 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 Denali 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 Denali automobile. Try the Automotix DIY solution today!
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra Denali AUTOMOBILES
Anti-Lock Brakes -> Bosch ABS/EBD/TCS/VSES -> Description
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
The Bosch ABS/EBD/TCS/VSES system consists of the following vehicle performance enhancement systems: Anti-Lock Brake System (ABS); Bi-State Engine Mount (BSM); Electronic Brake Distribution (EBD); Traction Control System (TCS); Variable Effort Steering (VES); Vehicle Stability Enhancement System (VSES). The Electronic Brake Control Module (EBCM) and the Brake Pressure Modulator Valve (BPMV) is serviced separately. The BPMV uses a 4 circuit configuration to control hydraulic pressure to each wheel independently.
When wheel slip is detected during a brake application, the ABS enters an...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 GMC Sierra Denali AUTOMOBILES
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2008 GMC Sierra Denali 6.2 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 2008 GMC Sierra Denali AUTOMOBILES
Reset Procedures
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
The Low Tire Pressure warning lamp and/or the DIC (Driver Information Center) Low Tire Pressure message can be cl...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 GMC Sierra Denali AUTOMOBILES
Alternator, Replace
Vehicle: 2008 GMC Sierra Denali 6.2 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 Denali AUTOMOBILES
General Motors Corp./Saturn Trucks -> Tire Pressure Monitoring System (TPMS) Warning Indicator -> 2008-09 Sierra -> Keyless Entry Transmitter Or DIC Method -> Relearn -> Reset -> Scan Tool Method
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
Reset
The Low Tire Pressure warning lamp and/or the DIC (Driver Information Center) Low Tire Pressure message can be cleared by adjusting the tires to the recommended pressure and driving the vehicle at a speed above 25 mph for more that 2 minutes.
Relearn
Keyless Entry Transmitter Or DIC Method
- On models with standard ignition switch, place the ignition switch in the On position.
- On models with keyless ignition switch, place the ignition switch in the ACC position.
- On all models, using the keyless entry transmitters press the lock and unlock buttons at the same time until a horn chirp...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2008 GMC Sierra Denali AUTOMOBILES
Radiator, Replace
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
- Drain radiator coolant into suitable container.
- Remove upper and lower radiator hoses.
- Remove mounting bolts and lower fan shroud.
- Remove engine vent hose and surge take hose.
- Disconnect engine o...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2008 GMC Sierra Denali AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
- Remove air cleaner outlet duct.
- Rotate tensioner clockwise to release belt tension using breaker bar with hex-head socket, then remove drive belt.
- If replacing A/C drive belt, rotate tensioner clockwise to release belt tension using breaker bar or ratchet, then remove belt.
- Clean and inspect belt su...
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COMPONENT LOCATION DIAGRAMS FOR 2008 GMC Sierra Denali AUTOMOBILES
Component location diagrams for most 2008 GMC Sierra Denali cars and light trucks sold in the U.S. from 1990+.
 Transmission Diagram for 2008 GMC Sierra Denali 6.2 V8 GASComponents on diagram: |
 Instrument Panel Diagram for 2008 GMC Sierra Denali 6.2 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2008 GMC Sierra Denali AUTOMOBILES
OEM drawn wiring diagrams for most 2008 GMC Sierra Denali cars and light trucks sold in the U.S.
 2008 GMC Sierra Denali 6.2 V8 GAS Wiring DiagramComponents on diagram: |
 2008 GMC Sierra Denali 6.2 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2008 GMC Sierra Denali AUTOMOBILES
OEM TSB listings for most 2008 GMC Sierra Denali 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 Denali 6.2 V8 GAS Symptoms: |
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Document: Second Order Prop Shaft Vibration Or Launch Shudder Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2008 GMC Sierra Denali AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2008 GMC Sierra Denali 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 Denali 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 Denali 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 Denali 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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