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1999 Pontiac Montana 3.4L All Gears Overdrive Slip
Posted to GM Transmission on 9/3/2003 6 Replies

flushed system as soon as problem started (fluid black) worked ok for about 300 miles then hard shift slipping very little in overdrive lost overdrive stoped waited for about 15 minutes continued on trip was fine for the remaining 60 miles did trans service in...

6 Replies Received (View Replies)

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car Vehicle Data

1999 Pontiac Montana

VIN [No VIN Available]
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedAll Gears Overdrive Slip
ConditionsHarsh Shift Shuddering Slipping
Message Closed

car Vehicle Data

1999 Pontiac Montana

VIN [No VIN Available]
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedAll Gears Overdrive Slip
ConditionsHarsh Shift Shuddering Slipping