GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check the vehicle for Diagnostic Trouble Codes (DTCs).

Are there any ABS diagnostic trouble codes?

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Go to Diagnostic Trouble Code (DTC) List in Antilock Brake System

Go to Step 2

2

Is the TCS indicator always on?

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Go to Diagnostic System Check in Antilock Brake System

Go to Step 3

3

Is the TCS indicator always off?

--

Go to Diagnostic System Check in Antilock Brake System

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