Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
You will want to make sure that the brake lights are working and it's not something simple like a fuse. However, there has been a service bulletin on the BTSI wiring harness for that type of concern, here is what it states,
|A/T - Key Cannot Be Removed/No Shift From Park |
Bulletin No.: 08-07-30-007B
Date: June 08, 2009
Subject: EI08045 - Key Cannot Be Removed from Ignition with Gear Selector in Park, Shifter Cannot Be Moved from Park Position (Repair/Reroute Brake Transmission Shift Interlock (BTSI) Solenoid Harness)
2007-2009 Chevrolet Impala Supercede:This bulletin is being revised to end the need for information from the field and provide repair information. Please discard Corporate Bulletin Number 08-07-30-007A (Section 07 - Transmission/Transaxle).
Some customers may comment on either of the following conditions:
|- ||The key cannot be removed from the ignition. |
|- ||The transmission gear selector (shifter) cannot be moved out of the PARK position. |
This condition may be caused by an incorrectly routed brake transmission shift interlock (BTSI) solenoid harness which can make it difficult to install. In some instances, the wiring looms are tangled, causing stress on the wires in the connector at the BTSI. If the BTSI harness is routed incorrectly, it may also result in a wire pinching issue.
Correction Important DO NOT use force to move the gear selector (shifter). Using force may cause damage to the BTSI.
Inspection/Routing and Repair of the BTSI Wiring Harness/Connector
|1. ||Check for wire damage at the BTSI connector terminal ends. Refer to SI for repair procedures. |
|2. ||For very intermittent issues, check the BTSI wire harness individual circuits for broken or crimped wires. Refer to SI for repair procedures. |
BTSI Wiring Harness Incorrectly Routed
|3. ||Inspect the routing of the wiring harness leading to the BTSI connector. The illustrations above show the BTSI harness routed incorrectly. |
BTSI Wiring Harness Routed Correctly
4. Reroute the wiring to create available slack and avoid future occurrences.