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Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2. Tests for the normal state of the TCS switch using a scan tool.
  2. 3. Tests if the BCM is able to detect a change in TCS switch state.
  3. 4. Tests for a stuck or shorted TCS switch. If the TCS switch is stuck or shorted, the state will change from ON to OFF when the TCS switch is disconnected.
  4. 5. Tests for a short to ground in the TCS switch signal circuit.
  5. 8. When the BCM is replaced, use a scan tool to perform the setup procedure for the BCM. Refer to BODY CONTROL MODULE (BCM) PROGRAMMING/RPO CONFIGURATION in BODY CONTROL SYSTEM .
Fig 1: DTC B2747 Testing Procedures
G01720954Courtesy of GENERAL MOTORS CORP.
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