Contents Wiring diagrams Section: Automatic Trans All sections

Shift Interlock System: Diagnosis GMC Savana H2500

Automatic Trans 5 illustrations ~216 words

Diagnostic Starting Point - Automatic Transmission Shift Lock Control

Begin the system diagnosis by reviewing the Automatic Transmission Shift Lock Control Description and Operation . Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation.

Refer to Symptoms - Automatic Transmission Shift Lock Control in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Symptoms - Automatic Transmission Shift Lock Control

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to Automatic Transmission Shift Lock Control Description and Operation .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the automatic transmission shift lock control system. Refer to «CHECKING AFTERMARKET ACCESSORIES»(ref-174234-S17026651072005032900000) .
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

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

  1. «Shift Lever Does Not Move with Brake Pedal Depressed»(ref-176168-S24213934092005050300000)
  2. «Shift Lever Can Be Moved without Brake Pedal Depressed»(ref-176168-S17343208972005050300000)

Scheme 960

Scheme 960: Shift Lever Does Not Move with Brake Pedal Depressed

Scheme 961

Scheme 961

Scheme 962

Scheme 962: Shift Lever Can Be Moved without Brake Pedal Depressed

Scheme 963

Scheme 963

Scheme 964

Scheme 964