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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2008 GMC Yukon 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 2008 GMC Yukon automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2008 GMC Yukon
- 2008 GMC Yukon Denali 6.2 V8 GAS, CC:6199, CID:378, Fuel Injection, Aspiration:378, Engine VIN:, Desg:8
- 2008 GMC Yukon SLE 5.3 V8 FLEX, CC:5328, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:0
- 2008 GMC Yukon SLE 5.3 V8 GAS, CC:5328, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:J
- 2008 GMC Yukon SLE 4.8 V8 GAS, CID:294, Fuel Injection, Aspiration:294, Engine VIN:, Desg:C
- 2008 GMC Yukon SLT 5.3 V8 FLEX, CC:5328, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:0
- 2008 GMC Yukon SLT 5.3 V8 GAS, CC:5328, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:J
- 2008 GMC Yukon Hybrid 6.0 V8 ELECTRIC/GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:Y
BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> General Service
Vehicle: 2008 GMC Yukon SLE 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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BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon 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 Yukon SLT 5.3 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 Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon 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 Yukon Denali 6.2 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 Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon 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 Yukon Hybrid 6.0 V8 ELECTRIC/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 ...
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BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon 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 Yukon SLE 5.3 V8 GAS
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... "
CLICK HERE TO GET FULL ACCESS TO 2008 GMC Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 GMC Yukon cars and light trucks from 1990+.
Anti-Lock Brakes -> Bosch ABS/EBD/TCS/VSES -> Diagnosis & Testing -> Accessing Diagnostic Trouble Code -> Clearing Diagnostic Trouble Codes -> Connector Pin Identification -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> Intermittents & Poor Connections -> Symptom Tests
Vehicle: 2008 GMC Yukon Denali 6.2 V8 GAS
Accessing Diagnostic Trouble Code
Connect a suitably programmed scan tool to Data Link Connector (DLC) and follow manufacturers instructions.
Diagnostic Trouble Code Interpretation
Refer to "Diagnostic Tests" for trouble code interpretation.
Connector Pin Identification
Refer to Figs. through for connector pin identifications.
Diagnostic Tests
[[table data]]Symptom Tests
Refer to Figs. and for symptom diagnosis.
Intermittents & Poor Connections
Most Intermittents are caused by faulty electrical connections or wiring, although a...
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