Symptoms - Automatic Transmission Shift Lock Control. Oldsmobile Alero 2000

For 1990-2009 cars only

Makes 🢒 Oldsmobile 🢒 2000 🢒 Alero 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T40-E/4T45-E 🢒 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 Circuit Description .

Visual/Physical Inspection

•	Inspect for aftermarket devices which could affect the operation of the Automatic Transmission Shift Lock Control System. Refer to Checking Aftermarket Accessories in Wiring Systems.

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

•	Inspect the automatic transmission shift lock control system and any related linkage for mechanical binding.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Step	Action	Yes	No
DEFINITION: This table test for the proper operation of the automatic transmission shift lock control system. SCHEMATIC REFERENCE: Shift Lock Control Schematics
1	Did you review the automatic transmission shift lock control operation and perform the necessary inspections?	Go to Step 2	Go to Automatic Transmission Shift Lock Control Circuit Description
2	Verify the fault is present. Does the system operate normally?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.	Go to Step 3
3	Turn ON the ignition, with the engine OFF. Press the brake pedal and hold. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the PARK position?	Go to Step 4	Go to Automatic Transmission Shift Lock Control Always On with Ignition in Run
4	Block the wheel and apply the parking brake. Release the brake pedal. Attempt to move the shift lever out of the PARK position. Does the shift lever move out of the PARK position?	Go to Automatic Transmission Shift Lock Control Inoperative	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.