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BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Power Brake Unit Service
Vehicle: 1997 Chevrolet Astro 4.3 V6 GAS
The power brake unit is n...
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BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Anti-lock Brakes -> Kelsey-Hayes -> Diagnosis & Testing -> 1997 Astro -> 1997 C & K Series -> 1997 G-Series -> 1997 P-Series -> 1997 S & T Series -> 1997-99 -> 1997-99 Except 1999 Sierra & Silverado -> 1997-99 G Van & P Series -> 1998 Astro -> 1998 C & K Series -> 1998 G-Series -> 1998 P-Series -> 1998 S & T Series -> 1999 Astro -> 1999 C & K Series Except Sierra & Silverado -> 1999 G-Series -> 1999 P-Series -> 1999 S & T Series -> 1999 Sierra & Silverado -> 2000 Astro -> 2000 C & K Series except Sierra, Silverado, Suburban, Tahoe & Yukon -> 2000 G-Series -> 2000 S & T Series -> 2000 Sierra -> 2000 Silverado -> 2000 Suburban -> 2000 Tahoe -> 2000 Yukon -> 2000-01 -> 2000-01 G Van -> 2001 Astro -> 2001 C & K Series -> 2001 G-Series -> 2001 S & T Series -> Accessing Diagnostic Trouble Codes -> Astro, Safari & S & T Series -> C & K Series -> Clearing Diagnostic Trouble Codes -> Connector Pin ID -> Diagnostic Process -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> Enhanced Diagnostics -> G Van & P Series -> Intermittents & Poor Connections -> Temperature Vs. Resistance -> Wiring Diagrams
Vehicle: 1997 Chevrolet Astro 4.3 V6 GAS
Accessing Diagnostic Trouble Codes
Diagnostic trouble codes (DTCs) can only be read by connecting a suitably programmed scan tool to the Data Link Connector (DLC) and following the tool manufacturer instructions.
Diagnostic Trouble Code Interpretation
Refer to Figs. and , for Diagnostic Trouble Code (DTC) interpretation.
Wiring Diagrams
Refer "Wiring Diagrams" in "Vehicle Systems"
Connector Pin ID
On 2000 S & T Series only, ensure correct anti-lock brake system connector pin identifications are used.
[[table data]]Diagnostic Process
- Inspect master cylinder reservoir fluid level and for possible fluid...
CLICK HERE TO GET FULL ACCESS TO 1997 Chevrolet Astro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Anti-lock Brakes -> Kelsey-Hayes -> Precautions -> Battery Ground Cable -> Delco LOC II -> General Service Precautions -> Radio Security System -> Theftlock
Vehicle: 1997 Chevrolet Astro 4.3 V6 GAS
Battery Ground Cable
Prior to service disconnect battery ground cable and isolate as required.
Radio Security System
Theftlock
If the Theftlock system is active when battery power is interrupted, the customers security code must be entered to restore proper function of the radio. To unlock a secured radio after power loss, proceed as follows:
- "LOC" appears with ignition in On position.
- Press "NM" and "000" will appear on display.
- Press "NM" again to make last two digits agree with security code.
- Press "HR" to make first 1 or 2 digits agree with security code.
- Press "AM-FM" to select code entered. "SEC" wi...
CLICK HERE TO GET FULL ACCESS TO 1997 Chevrolet Astro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Power Brake Units -> Bendix Brake Booster -> Troubleshooting -> Accumulator Leak-Down, System Does Not Hold Charge -> Grabby Brakes Or Booster Chatters/Pedal Vibrates -> Slow Brake Pedal Return
Vehicle: 1997 Chevrolet Astro 4.3 V6 GAS
Slow Brake Pedal Return
- Excessive seal friction in booster.
- Faulty spool action.
- Restriction in return line from booster to pump reservoir.
- Damaged input rod end.
Grabby Brakes Or Booster Chatters/Pedal Vibrates
- Faulty spool action caused by contamination in sys...
CLICK HERE TO GET FULL ACCESS TO 1997 Chevrolet Astro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Disc Brakes -> Delco Single 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: 1997 Chevrolet Astro 4.3 V6 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 1997 Chevrolet Astro BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1997 Chevrolet Astro AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1997 Chevrolet Astro cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Troubleshooting -> Brakes Grab -> Hard Pedal -> Slow Or No Release
Vehicle: 1997 Chevrolet Astro 4.3 V6 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...
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