Lumina V6-191 3.1L VIN T MFI (1993)
1. Sensor electrical connector.
2. Harmonic balancer.
3. Harmonic balancer to crankshaft bolt. Use thread sealer (GM#1052080 or equivalent) on harmonic balancer to crankshaft bolt. Torque bolt to 150
Nm (110 ft lb).
4. Lower vehicle.
5. Serpentine belt to pulley.
6. Negative battery cable.
NOTE: The system has a learning ability which allows it to make corrections for minor variations in the fuel system to improve driveability. When the
battery is disconnected the computer's memory is cleared and the learning process has to begin all over again. A change may be noticed in the
driving performance of the vehicle. To reset the vehicles learning ability, make sure the engine is at operating temperature and operate the
vehicle at part throttle, moderate acceleration, and idle conditions, until normal performance returns.
