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1993 Chevrolet K2500 Cheyenne 5.7L 4L80e TCC
TCC cycles on and off at about 1-2 second intervals when vehicle speed is greater than 65 mph. The PCM is actually commanding the TCC off. The scanner reads off when it disengages and on when it reengages. None of the scan data shows a reason for the PCM to tu...
FIX posted 2/14/1998
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1GCGK24KXP |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | 4L80e TCC |
| Conditions | TCC Cycles |
| Misc. | 4WD Pickup |
Message Closed w/FIX
Vehicle Data
1993 Chevrolet K2500 Cheyenne
| VIN | 1GCGK24KXP |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | 4L80e TCC |
| Conditions | TCC Cycles |
| Misc. | 4WD Pickup |
Video