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1998 Chevrolet K3500 Cheyenne 7.4L 1-2 Shift
Posted to GM Transmission on 4/1/2008 9 Replies

This truck has a harsh 1-2 shift on light throttle only. All other shifts are fine and 1-2 shift is smooth with medium or heavy throttle. Also noticed a 2-1 downshift clunk once in a while. only codes are the 02 sensor codes.

9 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1998 Chevrolet K3500 Cheyenne

VIN 1GCHK3356W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
Affected1-2 Shift
ConditionsHarsh 1-2 Shift
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet K3500 Cheyenne

VIN 1GCHK3356W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
Affected1-2 Shift
ConditionsHarsh 1-2 Shift