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1994 GMC C3500 Sierra SL 6.5L Shifts
This truck with 4L80 trans. is stuck in 2nd gear from 5 times a day to once in 5 days due to code 87 (High Ratio). Depend on my experience I replaced 2-3 sol , but it didn't work. When I checked the speed sensor with a scope it is O.K when it's not connected ,...
FIX posted 8/2/1998
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| VIN | 1GTHC33F4R |
| Engine | 6.5 L / 8 cyl / DIESEL |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | Shifts |
| Misc. | C Truck |
Message Closed w/FIX
Vehicle Data
1994 GMC C3500 Sierra SL
| VIN | 1GTHC33F4R |
| Engine | 6.5 L / 8 cyl / DIESEL |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Affected | Shifts |
| Misc. | C Truck |
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