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1984 GMC K1500 High Sierra 5.7L 1-2 2-3 3-4 Upshift
from accel. from a stop upshifts especially 1-2 are weak, does not appear to slip. if you lift up on throttle a little it does shift but not a positive feel. vehicle does down shift ok. any help would be appreciated. pardon my spelling and grammer this is ...
FIX posted 6/16/2000
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Related Documents & Media 
| VIN | 1GTEK14L1E |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | CARB |
| Affected | 1-2 2-3 3-4 Upshift |
| Conditions | Weak Upshifts |
Message Closed
Vehicle Data
1984 GMC K1500 High Sierra
| VIN | 1GTEK14L1E |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | CARB |
| Affected | 1-2 2-3 3-4 Upshift |
| Conditions | Weak Upshifts |
Video