What is the purpose of the Brake Transmission Shift Interlock (BTSI) system?

The Brake Transmission Shift Interlock (BTSI) system stops the shift lever from moving out of Park without the brake pedal pressed and the ignition key from being removed unless in Park. To remove it in early models, the center console is removed and the electrical connector unplugged. The solenoid is then pried off from the ball sockets and removed from the shift lever base. In later models, the solenoid is part of the shifter assembly. Installation is the opposite of removal.

Genuine Chevrolet Impala Shift Interlock Solenoid

Shift Lock Actuator

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3 Shift Interlock Solenoids found

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Chevrolet Impala Solenoid Assembly, Automatic Transmission Shift Lock Control
Part Number: 15775841
- Other Name: SOLENOID, Transmission Shift Brake Interlock; Shift Actuator, Solenoid
$51.97 MSRP: $90.46
You Save: $38.49 (43%)

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Fits the following Vehicles:
2008 Chevrolet Impala | LT | 6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9L Flex, 8 Cyl 5.3L
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Chevrolet Impala Actuator,Automatic Transmission Shift Lock Control
Part Number: 26097679
- Other Name: ACTUATOR, Transmission Shift Brake Interlock
- Replaces: 26064467, 26047242, 26060737
$88.09 MSRP: $131.66
You Save: $43.57 (34%)

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Fits the following Vehicles:
2000-2016 Chevrolet Impala | IMPALA, LS, LS POLICE CAR, LT, LT 3.5, LTZ, POLICE CAR, SS | 6 Cyl 3.4L, 6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.6L, 6 Cyl 3.8L, 6 Cyl 3.9L, 6 Cyl 3.9L Flex, 8 Cyl 5.3L
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Chevrolet Impala Solenoid Asm,Steering Column Brake Trans Shift Interlock
Part Number: 26042494
- Other Name: SOLENOID, Transmission Shift Brake Interlock; Interlock Solenoid, Solenoid
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Fits the following Vehicles:
2000-2001 Chevrolet Impala | LUMINA | 6 Cyl 3.4L, 6 Cyl 3.8L
1994-1996 Chevrolet Impala | CLASSIC 4 DOOR, CLASSIC STATION WAGON, LS 4 DOOR | 8 Cyl 5.7L
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Chevrolet Impala Shift Interlock Solenoid Parts Questions & Answers

Actuator,Automatic Transmission Shift Lock Control
26097679
Q: What is the purpose of the Brake Transmission Shift Interlock (BTSI) system?
A: The Brake Transmission Shift Interlock (BTSI) system stops the shift lever from moving out of Park without the brake pedal pressed and the ignition key from being removed unless in Park. To remove it in early models, the center console is removed and the electrical connector unplugged. The solenoid is then pried off from the ball sockets and removed from the shift lever base. In later models, the solenoid is part of the shifter assembly. Installation is the opposite of removal.