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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
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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 2008 GMC Sierra 2500 HD automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2008 GMC Sierra 2500 HD
- 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 2500 HD WT 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
- 2008 GMC Sierra 2500 HD SLT 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 2500 HD SLT 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
- 2008 GMC Sierra 2500 HD SLE 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Brake Pad Service
Vehicle: 2008 GMC Sierra 2500 HD SLT 6.0 V8 GAS
The procedures to remove and install the brake pads are outlined i...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Drum Brakes -> Adjustments -> Automatic Apply Parking Brakes -> Canyon & Colorado -> Control Rod -> HHR -> Manual Parking Brake -> Service Brake -> Sierra & Silverado -> Vue
Vehicle: 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS
Service Brake
The following procedure has been revised by a technical service bulletin.
These brakes have self-adjusting shoe mechanisms that ensure correct lining-to-drum clearances at all times. The automatic adjusters operate only when the brakes are applied as the vehicle is moving rearward or when the vehicle comes to an uphill stop.
Although the brakes are self-adjusting, an initial adjustment is required after the brake shoes have been relined or replaced, or when the length of the adjusting screw has been changed during some other service operation.
Frequent usage of an automati...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Power Brake Unit, Replace -> Acadia, Enclave & Outlook -> Avalanche, Escalade EXT, Sierra & Silverado -> Canyon & Colorado -> Envoy, Rainier & Trailblazer -> Equinox & Torrent -> Escalade, Suburban, Tahoe & Yukon -> Express & Savana -> HHR -> Hummer H2 -> Hummer H3 -> Relay, SV6, Terraza & Uplander -> Rendezvous -> SRX -> VUE
Vehicle: 2008 GMC Sierra 2500 HD SLE 6.6 V8 DIESEL
Acadia, Enclave & Outlook
- Apply park brake, then with engine off, apply and release brake pedal several times until brake pedal becomes firm to deplete vacuum reserve in vacuum brake booster.
- Remove air cleaner assembly.
- Disconnect master cylinder fluid level sensor electrical connector.
- Remove vacuum brake booster check valve and hose assembly from vacuum brake booster and position aside.
- Remove vacuum brake booster vacuum sensor and position aside.
- Release front and rear brake pipes from routing clip on frame rail.
- Remove Brake Pressure Modulator Valve (BPMV) assembly mount...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Precautions -> Brake Disc Service -> Brake Lines & Linings -> Brake Roughness -> General
Vehicle: 2008 GMC Sierra 2500 HD WT 6.0 V8 GAS
Brake Lines & Linings
Remove one of the front wheels and inspect the brake disc, caliper and linings.
Do not allow any oil or grease on the linings. It is recommended that linings be replaced in sets when worn or damaged.
If the caliper is cracked or fluid leakage through the casting is evident, it must be replaced as a unit.
Brake Roughness
The most common cause of brake chatter on disc brakes is a variation in thickness of the disc. If roughness or vibration is encountered during highway operation or if pedal pumping is experienced at low speeds, the disc may have excessive thickness v...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Brake System Bleed -> Hydraulic System Flush -> Manual Bleed -> Master Cylinder Bleed -> Pressure Bleed
Vehicle: 2008 GMC Sierra 2500 HD SLE 6.0 V8 GAS
Manual Bleed
- If vehicle is equipped with power brakes, remove vacuum reserve by applying brakes several times with engine off.
- Fill master cylinder reservoirs with suitable brake fluid. Ensure to always keep master cylinder reservoirs at least half full during entire bleeding procedure.
- If master cylinder is suspected to have air in bore, it must be bled first. To bleed master cylinder, proceed as follows:
- Disconnect forward brake pipe connection at master cylinder.
- Allow brake fluid to fill master cylinder bore until it begins to flow from forward pipe connector port.
- Connect and ...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 2500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 2500 HD cars and light trucks from 1990+.
Anti-Lock Brakes -> Bosch ABS/EBD/TCS/VSES -> System Service -> ABS Automated Bleed -> Acadia, Enclave & Outlook -> Avalanche, Escalade, Sierra, Silverado, Suburban, Tahoe & Yukon -> Brake Pressure Modulator Valve (BPMV) -> Brake System Bleed -> Component Replacement -> Electronic Brake Control Module (EBCM) -> Front Wheel Speed Sensor -> Hydraulic Brake System Bleeding - Manual -> Hydraulic Brake System Bleeding - Pressure -> Rear Wheel Speed Sensor -> Vehicle Yaw Sensor & Lateral Accelerometer
Vehicle: 2008 GMC Sierra 2500 HD SLT 6.6 V8 DIESEL
Brake System Bleed
ABS Automated Bleed
The base hydraulic brake system must be bled before performing this automated bleeding procedure.
- Connect a suitable scan tool to Data Link Connector (DLC).
- Start engine and allow engine to idle.
- Follow instructions on scan tool to access automated bleed procedure.
- Apply brake pedal when instructed by scan tool.
- Turn ignition off and remove scan tool from vehicle.
- Fill brake master cylinder reservoir to maximum fill level with brake fluid from a clean, sealed brake fluid container.
- Bleed hydraulic brake system as outlined under "Hydraulic Brake System... "
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