GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2009
🢒
Lucerne
🢒
Transmission
🢒
Automatic Transmission - 4T80-E
🢒 Inconsistent Shifts
Checks
Causes
1-2 and 2-3 Shift Solenoid Valves
•
O-ring seal damage
•
No compression
