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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2008 GMC Sierra 3500 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 3500 HD automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2008 GMC Sierra 3500 HD
- 2008 GMC Sierra 3500 HD WT 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 3500 HD WT 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
- 2008 GMC Sierra 3500 HD SLT 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 3500 HD SLT 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
- 2008 GMC Sierra 3500 HD SLE 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:K
- 2008 GMC Sierra 3500 HD SLE 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:6
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 HD cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Rotor, Replace
Vehicle: 2008 GMC Sierra 3500 HD WT 6.6 V8 DIESEL
- Raise and support vehicle, then remove wheel and tire assemblies.
- Compress caliper pistons until they bottom in bores using suitable clamp.
- Remove calip...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 HD cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Replacement -> Master Cylinder
Vehicle: 2008 GMC Sierra 3500 HD SLE 6.0 V8 GAS
Master Cylinder
- On models equipped with manual brake system,disconnect master cylinder pushrod from brake pedal.
- On all models, disconnect all wire con...
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 3500 HD BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 HD cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Troubleshooting -> Brake Rattle -> Brake Roughness Or Chatter; Pedal Pumping -> Caliper Brake Fluid Leak -> Excessive Pedal Effort -> Excessive Pedal Travel -> Heavy Brake Drag -> No Braking Effect When Brake Pedal Is Depressed -> Pull, Uneven Or Grabbing Brakes -> Rear Brakes Locking On Application
Vehicle: 2008 GMC Sierra 3500 HD SLT 6.0 V8 GAS
Excessive Pedal Travel
- Worn brake linings.
- Disc pads knock back after cornering or rough road travel.
- Piston and linings not properly seated or positioned.
- Insufficient fluid in system.
- Loose wheel bearing adjustment.
- Damaged or worn caliper piston seal.
- Improper booster pushrod adjustment.
- Pads out of flat more than .005 inch.
- Rear brake automatic adjusters inoperative.
- Improperly ground rear brake shoes.
Brake Roughness Or Chatter; Pedal Pumping
- Excessive lateral runout of rotor.
- Rotor excessively out of parallel.
Excessive Pedal Effort
- Frozen or seized pistons.
- Brake fluid, oil or grease on ...
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 3500 HD BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 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 3500 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 ...
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 3500 HD BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 HD cars and light trucks from 1990+.
Hydraulic Brake Systems -> Description -> Hydraulic Control Valves -> Master Cylinder
Vehicle: 2008 GMC Sierra 3500 HD SLT 6.0 V8 GAS
Master Cylinder
Some vehicles use a conventional tandem master cylinder with two hydraulic pistons operating in-line. The primary piston controls the front brake system and the secondary piston controls the rear brake system.
Other models use a master cylinder that operates the same as the conventional master cylinder, but also incorporates a quick take-up feature in the rear chamber to reduce excessive pedal travel which may result from increased fluid displacement required to move the low drag caliper piston out against the rotor.
The quick take-up uses a spring-loaded ball check val...
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 3500 HD BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Sierra 3500 HD AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Sierra 3500 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 3500 HD SLE 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...
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Sierra 3500 HD BRAKE SERVICE PROCEDURES
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