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Old 07-10-2005, 08:14 PM
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4l80e

Hi, I just had my tranny rebuilt and it works great but it will not shift down when you step on the throttle. It is in a Chevy 1ton dually and has a 454 in it. It is a 1991 thank you

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Old 07-10-2005, 08:43 PM
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the 4L80E is full electronic control.

I would suggest a return to the shop that rebuilt the tranny for a diagnose of the problem. A scan may help here to see if parameters are met with various controls of the tranny




Quote:
Originally Posted by cb5150
Hi, I just had my tranny rebuilt and it works great but it will not shift down when you step on the throttle. It is in a Chevy 1ton dually and has a 454 in it. It is a 1991 thank you
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