GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Seville 🢒 Brakes 🢒 Antilock Brake System 🢒 Vehicle Stability Enhancement System Excessive Brake Pulsation

Object Number: 106509 Size: MF
ABS Components
Cell 44: Lateral Accelerometer, Yaw Rate, and Steering Wheel Position Sensors
Handling ESD Sensitive Parts Notice

Circuit Description

When braking during Stabiltrak® activation, the brake pedal will feel different than the ABS pedal pulsation. The brake pedal pulsates at a higher frequency during Stabilitrak® activation. Perform this test if the brake pedal buzzes excessively during medium braking. Medium braking is defined as greater than 0.3 g or 10 ft/s² (3 m/s²).

Step

Action

Value(s)

Yes

No

1

Did you perform the ABS Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - ABS

2
  1. Turn OFF the ignition.
  2. Connect a scan tool to the data link connector (DLC).
  3. Turn the ignition switch to the ON position.
  4. Check for Powertrain Control Module (PCM) DTCs.

Is PCM DTC P1575 set?

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Go to DTC P1575 Extended Travel Brake Switch Circuit in Engine Controls - 4.6L

Go to Step 3

3
  1. Turn ON the ignition.
  2. Use the scan tool in order to select ABS/TCS/ICCS Data Display (1) Diagnostics, DATA LIST 2.
  3. Monitor the Extended Travel Brake Switch.
  4. Step on and off the brake pedal with enough force to simulate a hard braking condition. As the brake pedal is pressed and released, the scan tool should read Applied and Released.
  5. Use a tape measure in order to measure the distance that the brake pedal travels for the scan tool to read Applied.

Is the distance within the specified range?

1.0-1.3 in (2.5-3.3 cm)

Go to Diagnostic System Check - ABS

Go to Step 4

4

Adjust or repair the extended travel brake switch as necessary. Refer to Stop Lamp Switch Replacement or Stop Lamp Switch Adjustment in Hydraulic Brakes.

Did you complete the repair?

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Go to Diagnostic System Check - ABS

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