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GMC Sierra Denali CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW
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A/C & HEATER SERVICE PROCEDURES FOR GMC Sierra Denali 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 Denali cars and light trucks from 1990+
Air Bag System Precautions -> General Motors Corp. -> Arming -> Light Trucks & Vans -> Passenger Cars
Vehicle: 2002 GMC Sierra Denali 6.0 V8 GAS
Passenger Cars
Reverse disarming procedures to arm the Supplemental Restraint System, noting the following:
- Ensure all disconnected SRS electrical connectors are securely connected and routed.
- Install all removed fuses in proper locations.
- From a safe position at sides of or below air bag module, Turn ignition switch to ON position and observe Air Bag or SRS warning lamp.
- On all models except Prizm and 1990 Corvette, warning lamp should flash seven to nine times, then go off.
- On Prizm models, warning lamp should light for six seconds,...
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BRAKE SERVICE PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported GMC Sierra Denali cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Description
Vehicle: 2003 GMC Sierra Denali 6.0 V8 GAS
The caliper mounts in a way that allows the caliper to move laterally inboard as the brake pads wear. The caliper housing is a one piece casting with the inboard side containing the piston bore. The piston seal also acts as a return mechanism for the piston.
Applying the brake pedal causes the hydraulic pressure that moves the caliper piston. The piston then forces the inboard brake pad against the inboard braking surface of the rotor. Increasing the force against...
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FUEL FILTER REPLACEMENT PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported GMC Sierra Denali cars and light trucks sold in the U.S. for 1980+.
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 2004-06 C/K, G & R/V Series w/Gasoline Engine -> Heavy Duty Emissions -> Light Duty Emissions -> Normal Service -> Severe Service
Vehicle: 2005 GMC Sierra Denali 6.0 V8 GAS
Light Duty Emissions
Normal Service
Service as required
Severe Ser...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported GMC Sierra Denali cars and light trucks from 1990+.
DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2004 GMC Sierra Denali 6.0 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 GMC Sierra Denali 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 Denali cars and light trucks sold in the U.S. from mid 1990's+.
Component Locations
Vehicle: 2006 GMC Sierra Denali 6.0 V8 GAS
Refer to Fig...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported GMC Sierra Denali cars and light trucks from 1990+.
Starter, Replace
Vehicle: 2006 GMC Sierra Denali 6.0 V8 GAS
- Disconnect battery ground cable.
- Remove mounting bolts and engine shield, if required.
- Remove mounting bolts and oil pan skid plate, if required.
- Remove righthand transmission cover bolt.
- Remove front axle mounting bracket nut, then position front axle mounting bracket bolt until tip is flush with support bushing. Do not remove bolt.
- Remove mounting bolts and slide starter forward until it clears transmission.
- Disconnect oil level sensor electrical connector.
- Remove start...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Cabin air filter locations and replacement procedures with corresponding images for most domestic and imported GMC Sierra Denali 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: 2005 GMC Sierra Denali 6.0 V8 GAS
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...
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MAINTENANCE LAMP RESET PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported GMC Sierra Denali cars and light trucks sold in the U.S. from 1990+.
General Motors Corp./Saturn Trucks -> Check Engine/Service Engine Soon Indicator Lamp -> Electronic Engine Controls Or Electronic Fuel Injection Except Tracker
Vehicle: 2009 GMC Sierra Denali 6.2 V8 FLEX
The Check Engine/Service Engine Soon Lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detected a problem and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM/PCM memory can be cleared of codes either by using a scan tool (OBD II systems) or by disconnecting the battery ground ca...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported GMC Sierra Denali cars and light trucks from 1990+
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2008 GMC Sierra Denali 6.2 V8 GAS
Lower
- Drain cooling system into a suitable container.
- Remove air cleaner outlet duct.
- Remove air cleaner housing.
- Reposition hose clamp from engine.
- Remove radiator outlet hose from engine.
- Reposition hose clamp from radiator.
- Remove radiator outlet hose from radiator and from vehicle.
- Reverse procedure to inst...
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SERPENTINE BELT SERVICE PROCEDURES FOR GMC Sierra Denali AUTOMOBILES
Serpentine belt replacement procedures with corresponding images for most domestic and imported GMC Sierra Denali cars and light trucks sold in the U.S. from 1990+.
Serpentine Drive Belt, Replace
Vehicle: 2002 GMC Sierra Denali 6.0 V8 GAS
- 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 GMC Sierra Denali AUTOMOBILES
Component location diagrams for most GMC Sierra Denali cars and light trucks sold in the U.S. from 1990+.
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WIRING DIAGRAMS FOR GMC Sierra Denali AUTOMOBILES
OEM drawn wiring diagrams for most GMC Sierra Denali cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR GMC Sierra Denali AUTOMOBILES
OEM TSB listings for most GMC Sierra Denali cars and light trucks sold in the U.S. from 1985+.
Document: INFORMATION ON 4T65-E MN7, M15, M76, MN3 AUTOMATIC TRANSMISSION CASE, COOLER FITTING AND TORQUE CONVERTER DRAIN BACK CHECK BALL CHANGE - REVISED Vehicle: 2006 GMC Sierra Denali 6.0 V8 GAS Auto Systems: |
Document: INFORMATION ON ONSTAR SYSTEM - POSSIBLE LOSS OF GPS AND/OR UNABLE TO REPLENISH CUSTOMER'S HANDS-FREE CALLING MINUTES - REVISED Vehicle: 2006 GMC Sierra Denali 6.0 V8 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR GMC Sierra Denali AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 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 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 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 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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