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For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Aztek - AWD 🢒 Transmission/Transaxle 🢒 Shift Lock Control 🢒 Shift Lever Does Not Move with Brake Pedal Depressed

Shift Lever Does Not Move with Brake Pedal Depressed Buick

Step

Action

Yes

No

Schematic Reference: Shift Lock Control Schematics

Connector End View Reference: Shift Lock Control Connector End Views

DEFINITION: Transmission shift lever will not move out of the PARK position with the ignition ON and the brake pedal pressed.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn ON the ignition, with the engine OFF.
  2. Press and hold the brake pedal.
  3. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Disconnect the automatic transmission shift lock control switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Press and hold the brake pedal.
  5. Attempt to move the transmission shift lever out of the PARK position.

Does the transmission shift lever move out of the PARK position?

Go to Step 5

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Disconnect the automatic transmission shift lock control solenoid.
  3. Turn ON the ignition, with the engine OFF.
  4. Press and hold the brake pedal.
  5. Attempt to move the transmission shift lever out of the PARK position.

Does the transmission shift lever move out of the PARK position?

Go to Step 7

Go to Step 6

5
  1. Inspect for proper adjustment of the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Adjustment .
  2. Inspect for poor connections at the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 8

6

Inspect for poor connections at the automatic transmission shift lock control solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

7

Repair the short to battery positive voltage in the automatic transmission shift lock control solenoid voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs .

Did you complete the repair?

Go to Step 10

--

8

Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement .

Did you complete the repair?

Go to Step 10

--

9

Replace the automatic transmission shift lock control solenoid. Refer to Automatic Transmission Shift Lock Control Actuator Replacement .

Did you complete the replacement?

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2

Shift Lever Does Not Move with Brake Pedal Depressed Pontiac

Step

Action

Yes

No

Schematic Reference: Shift Lock Control Schematics

Connector End View Reference: Shift Lock Control Connector End Views

DEFINITION: Transmission shift lever does not move out of the PARK position with the ignition ON and the brake pedal pressed.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2
  1. Turn ON the ignition.
  2. Press and hold the brake pedal.
  3. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Disconnect the automatic transmission shift lock control switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?

Go to Step 9

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Leave the automatic transmission shift lock control switch disconnected.
  3. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground.
  4. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?

Go to Step 12

Go to Step 5

5
  1. Turn OFF the ignition.
  2. Connect a test lamp between the ignition 3 voltage circuit of the park lock solenoid and a good ground.
  3. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?

Go to Step 6

Go to Step 11

6
  1. Turn OFF the ignition.
  2. Connect a test lamp between the ignition 3 voltage circuit of the park lock solenoid and the shift lock solenoid controlled ground circuit.
  3. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?

Go to Step 10

Go to Step 7

7
  1. Turn OFF the ignition.
  2. Connect a test lamp between the ignition 3 voltage circuit of the park lock solenoid and the shift lock solenoid controlled ground circuit at the body control module (BCM).
  3. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?

Go to Step 13

Go to Step 8

8

Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 16

9
  1. Inspect for proper adjustment of the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Adjustment in Lighting Systems.
  2. Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 15

10

Inspect for poor connections at the harness connector of the park lock/automatic transmission shift lock control solenoid assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 14

11

Repair the open or high resistance in the park lock solenoid ignition 3 voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

12

Repair short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

13

Repair the open or high resistance in the shift lock solenoid controlled ground circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

14

Replace the park lock/automatic transmission shift lock control solenoid. Refer to Transmission Control Replacement in Automatic Transaxle - 4T65-E.

Did you complete the replacement?

Go to Step 17

--

15

Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement in Lighting Systems.

Did you complete the replacement?

Go to Step 17

--

16

Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 17

--

17

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2