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4L60E Shifting Problem


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Hey guys -

A friend has a '93 C1500 with the 4L60E tranny. Recently when he puts it in Drive to start off the truck will not move. If he puts the shift selector manually in the lowest gear it will accelerate and he can upshift into Drive and then the truck will shift normally. If you stop for any reason and have to start again, you have to put the selector back in the lowest gear and when you get up to approx. 5-10 MPH shift into Overdrive and the tranny will shift through the gears normally after that until you stop again. When starting off in low if you put it under hard load, as in taking off fast, he hears a ratcheting sound and has to back off & let it catch up. Any ideas and troubleshooting would be greatly appreciated.

 

:banghead:

 

guzzler96

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