GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2009
🢒
Lucerne
🢒
Transmission
🢒
Automatic Transmission - 4T80-E
🢒 Third and Fourth Gears Only
Checks
Causes
2-3 Shift Solenoid Valve
•
Stuck ON
•
Pinched wire to ground