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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2008 Hummer H3 car and truck
repair procedures including Hummer 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 Hummer H3 automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2008 Hummer H3
- 2008 Hummer H3 X 3.7 L5 GAS, CC:3654, CID:223, Fuel Injection, Aspiration:223, Engine VIN:, Desg:E
- 2008 Hummer H3 3.7 L5 GAS, CC:3654, CID:223, Fuel Injection, Aspiration:223, Engine VIN:, Desg:E
- 2008 Hummer H3 Alpha 5.3 V8 GAS, CC:5328, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:L
BRAKE SERVICE PROCEDURES FOR 2008 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> Bendix Master Cylinder -> Delco Master Cylinder -> Disassemble -> Wheel Cylinder
Vehicle: 2008 Hummer H3 X 3.7 L5 GAS
Delco Master Cylinder
When performing the following procedures, refer to Fig. noting that the composite reservoir may vary in design.
Disassemble
- Remove master cylinder from vehicle.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch and proportioning valve assembly, if equipped.
- Depress primary piston and remove lock ring.
- Plug primary fluid outlet (outlet nearest to cowl when master cylinder is installed), then apply compressed air into secondary fluid outlet to remo...
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BRAKE SERVICE PROCEDURES FOR 2008 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> Bendix Master Cylinder -> Delco Master Cylinder -> Disassemble -> Wheel Cylinder
Vehicle: 2008 Hummer H3 Alpha 5.3 V8 GAS
Delco Master Cylinder
When performing the following procedures, refer to Fig. noting that the composite reservoir may vary in design.
Disassemble
- Remove master cylinder from vehicle.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch and proportioning valve assembly, if equipped.
- Depress primary piston and remove lock ring.
- Plug primary fluid outlet (outlet nearest to cowl when master cylinder is installed), then apply compressed air into secondary fluid outlet to remo...
CLICK HERE TO GET FULL ACCESS TO 2008 Hummer H3 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 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 Hummer H3 3.7 L5 GAS
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 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Brake System Bleed -> Manual Bleed -> Pressure Bleed
Vehicle: 2008 Hummer H3 3.7 L5 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 Hummer H3 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Troubleshooting -> Brakes Grab -> Hard Pedal -> Slow Or No Release
Vehicle: 2008 Hummer H3 3.7 L5 GAS
Hard Pedal
- Internal vacuum leak.
- Faulty control valve.
- Broken or damaged hydraulic brake lines.
- Collapsed or damaged vacuum hose.
- Plugged or loose vacuum fitting.
- Bad stud welds on front or rear housing on power head.
- Faulty booster diaphragm.
- Restricted air filter element.
- Worn or distorted reaction plate or levers.
- Cracked or broken pow...
CLICK HERE TO GET FULL ACCESS TO 2008 Hummer H3 BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2008 Hummer H3 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2008 Hummer H3 cars and light trucks from 1990+.
Disc Brakes -> Delco Single Piston Sliding Caliper -> Caliper Service -> Assemble -> Disassemble -> Front -> Inspection -> Installation -> Rear -> Removal
Vehicle: 2008 Hummer H3 Alpha 5.3 V8 GAS
Removal
Front
- Siphon brake fluid out of master cylinder until fluid level is approximately 1/3 full, this will prevent fluid overflow when caliper piston is pushed back into its bore.
- Raise and support vehicle, then remove wheels.
- Push piston back into its bore using suitable C-clamp, Fig. .
- Remove brake caliper hose bolt, then two metal gaskets from brake caliper bolt.
- Remove two caliper mounting bolts and lift caliper off of rotor.
Rear
- Siphon brake fluid out of master cylinder until fluid level is approximately 1/3 full, this will prevent fluid overflow when caliper piston is pushed ...
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