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1991 Chevrolet R2500 Suburban Silverado 7.4L TCC, O.d.
Posted to GM Transmission on 9/14/2009 8 Replies

the transmission will start off shifting properly, then after a few miles will drop out of o.d. and lock up. and set a trouble code 68. the transmission shop replace the transmission pass through connector with the updated harness and we double checked the con...

8 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1991 Chevrolet R2500 Suburban Silverado

VIN 1GNGR26NXM
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedTCC, O.d.
ConditionsNo Lock Up, Stays in 3rd Gear
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet R2500 Suburban Silverado

VIN 1GNGR26NXM
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
AffectedTCC, O.d.
ConditionsNo Lock Up, Stays in 3rd Gear