Operation CHARM: Car repair manuals for everyone.
Home >> Oldsmobile >> 1999 >> LSS V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Shift Interlock >> Description and Operation >> Auto Trans Shift Lock Control Description
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Auto Trans Shift Lock Control Description

The Brake Transmission Interlock (BTSI) system prevents the automatic transaxle from being shifted out of PARK unless the brake pedal is depressed. When the brake pedal is depressed the BTSI solenoid (3, or 2) releases a magnetic lock. This enables the following actions to occur:
^ The shift cable to move
^ The shift lever to operate

You may override the BTSI system by turning the ignition lock to OFF. This removes battery voltage from the solenoid and leaves the solenoid de-energized.

pro multis · About Operation CHARM