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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 GMC Sonoma 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 2003 GMC Sonoma automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2003 GMC Sonoma
- 2003 GMC Sonoma 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:X
- 2003 GMC Sonoma 2.2 L4 GAS, CID:134, Fuel Injection, Aspiration:134, Engine VIN:, Desg:H
BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> Bendix Master Cylinder -> Delco Master Cylinder -> Disassemble -> Tracker Master Cylinder -> Wheel Cylinder
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS
Delco Master Cylinder
When performing the following procedures, refer to. Figs. and , 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...
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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Disc Brakes -> Delco Single Piston Sliding Caliper -> Caliper Service -> Assemble -> Disassemble -> Except S & T -> Front -> Inspection -> Installation -> Rear -> Removal -> S & T
Vehicle: 2003 GMC Sonoma 4.3 V6 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
Except S & T
- Siphon brake fluid out of master cylinder until fluid level is approximately 1/3 full, this will prevent fluid overflow when caliper pist...
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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Description
Vehicle: 2003 GMC Sonoma 2.2 L4 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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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Disc Brakes -> Delco Single Piston Sliding Caliper -> Brake System Bleed
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS
Refer to. "Hydraulic Brake... "
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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Hydraulic Brake Systems -> Brake System Bleed -> Hydraulic System Flush -> Manual Bleed -> Master Cylinder Bleed -> Parking Brake Bleed -> Pressure Bleed
Vehicle: 2003 GMC Sonoma 4.3 V6 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 the 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...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 2003 GMC Sonoma cars and light trucks from 1990+.
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Precautions -> Brake Disc Service -> Brake Lines & Linings -> Brake Roughness -> General
Vehicle: 2003 GMC Sonoma 4.3 V6 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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