Symptoms. Chevrolet Impala 2000

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2000 🢒 Impala 🢒 Brakes 🢒 Antilock Brake System 🢒 Symptoms

Important:

Perform the Diagnostic System Check - ABS before using the Symptom Tables in order to verify that all of the following are true:

•	There are no DTCs set.

•	The control module(s) can communicate via the serial data link.

Review the system operation in order to familiarize yourself with the system functions. Refer to ABS Operation .

•	Inspect for aftermarket devices which could affect the operation of the ABS System. Refer to Checking Aftermarket Accessories in Wiring Systems.

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

•	Inspect the brake fluid reservoir for the proper brake fluid level.

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

•	No Communication with Electronic Brake Control Module/Electronic Brake and Traction Control Module

•	ABS Indicator Always On

•	ABS Indicator Inoperative

•	TRAC OFF Indicator Always On

•	TRAC OFF Indicator Inoperative