won't shift into 3rd gearat full thottle
10-29-2005, 07:13 AM
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won't shift into 3rd gearat full thottle or heavy part throttle unless I let off the gas completely. The 4l60 has a shift kit and and a 3200 stall. I have removed all tq and adjusted part throttle shifts. Everything else seems to working fine. Any Ideas? Thanks
10-31-2005, 03:16 PM
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10-31-2005, 05:16 PM
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Two ideas (I'm talking from experiance on both).
First (most expensive) the tranny just cant handle the increased HP and needs a rebuild. Mine did the same exact thing and when it was rebuilt, the bands were burnt up and the drum was warped.
Second (this happened during another rebuild, 60K miles on first rebuild). This shop said that the "super-servo" was too much for the tranny and installed a Corvete servo. This tranny wouldn't shift to 3rd on WOT. I reinstalled the Super-servo and it shifts fine.
First (most expensive) the tranny just cant handle the increased HP and needs a rebuild. Mine did the same exact thing and when it was rebuilt, the bands were burnt up and the drum was warped.
Second (this happened during another rebuild, 60K miles on first rebuild). This shop said that the "super-servo" was too much for the tranny and installed a Corvete servo. This tranny wouldn't shift to 3rd on WOT. I reinstalled the Super-servo and it shifts fine.
