Question about 2001 Chevrolet Silverado

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Why does my truck jump at 45 mph when it shifts gears

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  • Chevrolet Master
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Gearbox has worn brake bands or sticky piston ,exchange gearbox needed

Posted on Oct 05, 2010

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You may need a re flash of the programming in the transmission control module. Only the dealer can do this.

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If the Check Engine light is on all the time, it means there is a "fault code" stored in the computer. Take it to an auto parts store (like Auto Zone) and ask them to read the codes to see what it says. They should do it for free. If they won't, go to another auto parts store.

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Depends if you have a regular 3 speed automatic, or a 3 speed with overdrive.
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2003 toyota echo when shifting above 45 mph makes a loud high rpm noise especially on the highway


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Computer firmware needs upgrade

Take your car to a Chrysler dealer shop and have them update the transmission program.As your tranny wears it loses it shift point and stutters between 40 - 45 mph looking for the right gear to change to..Had same problem in 94 Concorde and 94 T&C minivan.Reprogramming tranny fixed both cars.

Nov 22, 2008 | 1997 Chrysler Concorde

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