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1993 Chevrolet K3500 Cheyenne 7.4L 4th Gear,TCC
Hello everybody, I have spent alot of time on this one. When I drive the vehicle at freeway speeds for aproximately 20 minutes it will shift down to 3rd gear, shut the torque converter clutch off and set a code 68 overdrive error. I researched this code in...
FIX posted 9/7/1999
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1GCHK39N4P |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | 4th Gear,TCC |
| Conditions | 4th Gear Dropout , No TCC |
| Misc. | 4X4 |
Message Closed w/FIX
Vehicle Data
1993 Chevrolet K3500 Cheyenne
| VIN | 1GCHK39N4P |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | 4th Gear,TCC |
| Conditions | 4th Gear Dropout , No TCC |
| Misc. | 4X4 |
Video