Transcript
2003 Cadillac Truck Escalade V8-6.0L VIN N
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Brake Bleeding: Service and Repair ABS Automated Bleed Procedure W/JL4 Antilock Brake System ABS Automated Bleed Procedure (W/JL4) Note: When adding fluid to the brake master cylinder reservoir, use only Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT3 brake fluid from a clean, sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid, may cause contamination which could result in damage to the internal rubber seals and/or rubber linings of hydraulic brake system components. Note: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices. Important: The following procedures may be performed on vehicles equipped with option code JL4, Vehicle Stability Enhancement System (VSES). Precharge Bleed The Precharge bleed procedure is to be performed when air may have been introduced into the precharge pump inlet hose, the precharge pump or the combination valve. Perform the procedure as follows. Important: If the brake system warning lamp is illuminated, DO NOT allow the vehicle to be driven until the concern is diagnosed and repaired. Refer to Symptoms - Hydraulic Brakes in Hydraulic Brakes. See: Hydraulic System/Testing and Inspection/Diagnosis By Symptom (Hydraulic Brakes)/Symptoms- Hydraulic Brakes 1. Ensure that the master cylinder reservoir is filled to at least the minimum fill level with Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT 3 brake fluid from a clean, sealed container. 2. Ensure the master cylinder reservoir cap is ON securely. 3. Install a scan tool. 4. Turn ON the ignition. 5. Select the VSES Special Functions menu on the scan tool. 6. Select Precharge Bleed. 7. Press the On key. The precharge pump runs for approximately 3 seconds; circulating fluid from the master cylinder fluid reservoir, through the precharge pump and combination valve, then back to the master cylinder. 8. Evaluate the feel of the brake pedal. If the pedal feels spongy, perform a base brake system bleed. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes. 9. Ensure that the master cylinder reservoir is filled to at least the minimum fill level with Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT 3 brake fluid from a clean, sealed container.
Automated Bleed
The Automated Bleed procedure is to be performed when the brake pressure modulator valve (BPMV) is replaced. Perform the procedure as follows.
Important: The base brake system must be bled before proceeding. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes.
Important: If the brake system warning lamp is illuminated, DO NOT allow the vehicle to be driven until the concern is diagnosed and repaired. Refer to Symptoms - Hydraulic Brakes in Hydraulic Brakes. See: Hydraulic System/Testing and Inspection/Diagnosis By Symptom (Hydraulic Brakes)/Symptoms- Hydraulic Brakes 1. Ensure that the master cylinder reservoir is filled to at least the minimum fill level with Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT 3 brake fluid from a clean, sealed container. 2. Ensure the master cylinder reservoir cap is ON securely. 3. Install a scan tool. 4. Turn ON the ignition. 5. Select the VSES Special Functions menu on the scan tool. 6. Select Precharge Bleed. 7. Press the On key. The precharge pump runs for approximately 3 seconds; circulating fluid from the master cylinder fluid reservoir, through the precharge pump and combination valve, then back to the master cylinder. 8. Select Automated Bleed. 9. Press the On key. The precharge pump and ABS pump run for approximately 6 seconds while air is purged from the BPMV. 10. Ensure that the master cylinder reservoir is filled to at least the minimum fill level with Delco Supreme 11, GM P/N 12377967 (Canadian P/N
2003 Cadillac Truck Escalade V8-6.0L VIN N
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992667), or equivalent DOT 3 brake fluid from a clean, sealed container. 11. Perform a base brake system bleed. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes. 12. Evaluate the feel of the brake pedal. If the pedal feels spongy, repeat steps 1 - 11. If the pedal feel is acceptable, proceed to the next step. 13. Ensure that the master cylinder reservoir is filled to at least the minimum fill level with Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT 3 brake fluid from a clean, sealed container.
W/O JL4
Antilock Brake System ABS Automated Bleed Procedure (w/o JL4) Note: When adding fluid to the brake master cylinder reservoir, use only Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT3 brake fluid from a clean, sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid, may cause contamination which could result in damage to the internal rubber seals and/or rubber linings of hydraulic brake system components. Note: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in Cautions and Notices. Important: This procedure may be performed on all vehicles EXCEPT those equipped with option code JL4, Vehicle Stability Enhancement System (VSES). Important: The base hydraulic brake system must be bled before performing this automated bleeding procedure. If you have not yet performed the base hydraulic brake system bleeding procedure, refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes before proceeding. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16.
Install a scan tool to the vehicle. Start the engine and allow the engine to idle. Depress the brake pedal firmly and maintain steady pressure on the pedal. Using the scan tool, begin the automated bleed procedure. Follow the instructions on the scan tool to complete the automated bleed procedure. Release the brake pedal between each test sequence. Turn the ignition OFF. Remove the scan tool from the vehicle. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11®, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT3 brake fluid from a clean, sealed brake fluid container. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure) in Hydraulic brakes. With the ignition OFF, apply the brakes 35 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve. Slowly depress and release the brake pedal. Observe the feel of the brake pedal. If the brake pedal feels spongy, repeat the automated bleeding procedure. If the brake pedal still feels spongy after repeating the automated bleeding procedure inspect the brake system for external leaks. Refer to Brake System External Leak Inspection in Hydraulic Brakes. See: Hydraulic System/Testing and Inspection/Non-Trouble Code Procedures/Brake System External Leak Inspection Turn the ignition key ON, with the engine OFF; check to see if the brake system-warning lamp remains illuminated. If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired. Refer to Symptoms - Hydraulic Brakes in Hydraulic Brakes. See: Hydraulic System/Testing and Inspection/Diagnosis By Symptom (Hydraulic Brakes)/Symptoms- Hydraulic Brakes Drive the vehicle to exceed 13 kph (8 mph) to allow ABS initialization to occur. Observe brake pedal feel. If the brake pedal feels spongy, repeat the automated bleeding procedure until a firm brake pedal is obtained.
