For 1990-2009 cars

Caution: Brake fluid may irritate eyes and skin. In case of contact, take the following actions:

• | Eye contact - rinse thoroughly with water.

• | Skin contact - rinse with soap and water.

• | If ingested - consult a physician immediately.

Caution: To help avoid personal injury due to poor braking, DO NOT tap into the vehicle's brake hydraulic system to operate a trailer brake system.

Caution: Remove all the air from the hydraulic brake system anytime the hydraulic brake system is opened for repair. The entire bleeding procedure must be followed. Failure to remove all the air in the hydraulic brake system will result in reduced braking performance and possible personal injury.

Caution: Certain components in the Antilock Brake System (ABS) are not intended to be serviced individually. Attempting to remove or disconnect certain system components may result in personal injury and/or improper system operation. Only those components with approved removal and installation procedures should be serviced.

Notice: DOT 5 silicone brake fluid should never be used in the ABS Brake System. Excessive wear of brake components and other conditions can occur from using DOT 5 silicone brake fluid.

Notice: Do not touch the electrical connections and pins, or allow them to come in contact with brake fluid, as this will damage the EBCM.

Notice: Power steering fluid and brake fluid must not be mixed. If brake seals contact steering fluid or steering seals contact brake fluid, seal damage will result.

Notice: Observe the following general precautions when servicing the Antilock Brake System and/or other vehicle systems. Failure to observe these precautions may result in Antilock Brake System damage.

• | Unplug the EBCM harness connector before performing electric welding procedures.

• | Always and carefully note the routing, position, mounting and location of the ABS wiring, connectors, clips, brackets, etc. The ABS components are extremely sensitive to Electromagnetic Interference (EMI). Proper mounting is critical when servicing ABS components.

• | Do not use a quick charger for engine starting if the battery is still connected to the vehicle's electrical system. Do not use a quick charger for battery charging if the battery is still connected to the vehicle's electrical system. Failure to observe this precaution may cause serious damage to electrical components. Always disconnect the battery negative cable when charging a battery.

• | Never disconnect the battery from the electrical system with the engine running.

• | The ignition switch must be in the OFF position when disconnecting the EBCM connector.

• | Do not hang the suspension components by the wheel speed sensor cable. Cable damage may result.

• | Do not force the wheel speed sensors into place. Push the sensors into place by hand only.

• | During painting work, the EBCM may be subjected to a maximum temperature of 95°C (203°F) for brief periods and a maximum of 85°C (184°F) for lengthy periods (about two hours).

• | Many components of the ABS are non-serviceable and must be replaced as assemblies. Do not disassemble any component which is designated as non-serviceable in this section.

• | Use only Delco Supreme 11 (GM 1052542) brake fluid or equivalent DOT 3 brake fluid when filling the master cylinder. Do not use a container which has been used for petroleum based fluid. Do not use a container which is wet with water. Petroleum based fluids will cause swelling and distortion of rubber parts in the hydraulic brake system and water will mix with brake fluid, lowering the fluid boiling point. Keep all fluid containers capped to prevent contamination.

• | Use a scan tool diagnostic tester to check the entire ABS system after the following replacement:

• | Check the entire ABS system after the replacement of the EBCM.

• | Check the entire ABS system after the replacement of the wheel speed sensors.

• | Check the entire ABS system after the replacement of the wiring harness.

• | Check the entire ABS system after work involving the ABS system.

The above precautions are not exhaustive and are to be followed when working on an ABS equipped vehicle. Become familiar with the ABS and how it may be interrelated to other components on the vehicle when performing service work.