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Test Description

WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 2:  This step checks for DTCs that are wheel speed related. Wheel speed DTCs must be diagnosed first.
DTC C0220-C0229

Step Action Yes No
Schematic Reference: Antilock Brake System Schematics 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2  Are any wheel speed related DTCs set? Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3
  1. Use the scan tool in order to clear the DTCs.
  2. Use the scan tool and perform the solenoid test. Refer to Scan Tool Output Controls .
Do the solenoids in question function normally?		 Go to Diagnostic Aids Go to Step 4 
4 Replace the brake pressure modulator valve (BPMV). Refer to Brake Pressure Modulator Valve Replacement .
Did you complete the repair?		 Go to Step 5  -
5 Use the scan tool and perform the solenoid test.
Do the solenoids in question function normally?		 System OK Go to Step 2 
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