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1989 GMC V3500 5.7L Slips/Down Shifts 3-2 ???
Posted to GM Transmission on 2/10/2008 17 Replies

The transmission (Turbo 400) works fine but after 5-6 miles at 60-65 mph the transmission will starts slipping/ or downshifts to 2nd gear the engine rpm are high but you back down to 40 mph the vehicle will run fine in 2nd gear

The vehicle was sent to the tra...

17 Replies Received (View Replies)

  Related Documents & Media  1989 GMC V3500

 
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car Vehicle Data

1989 GMC V3500

VIN 1GDHV34K9K
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI
AffectedSlips/Down Shifts 3-2 ???
ConditionsDrops Out of 3 Rd Gear?
Misc.6 Wheel Dump Truck
Message Closed

car Vehicle Data

1989 GMC V3500

VIN 1GDHV34K9K
Engine5.7 L / 8 cyl / GAS
Trans3-speed Automatic
DeliveryFI
AffectedSlips/Down Shifts 3-2 ???
ConditionsDrops Out of 3 Rd Gear?
Misc.6 Wheel Dump Truck