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1990 Chevrolet G20 Sportvan 5.7L 4-3 Shift
The trans (4L60) will perform a 4-3 downshift when you back out of the throttle only slightly at cruising speed. Only occurs after extended driving. I tried to monitor the trans parameters with my scanner, but I couldn't duplicate the condition. Could some...
FIX posted 4/15/2000
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| VIN | 2GBEG25K2L |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | 4-3 Shift |
| Conditions | Improper Shifting |
| Misc. | Custom Van |
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Vehicle Data
1990 Chevrolet G20 Sportvan
| VIN | 2GBEG25K2L |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Affected | 4-3 Shift |
| Conditions | Improper Shifting |
| Misc. | Custom Van |
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