Question about 2003 Chevrolet Monte Carlo

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Did a fluid change and treatment on a 2003 monte carlo

Still get hard shifts and it is very periodic only happpens maybe every other day any thing that could cause this i have a heater core leak t the moment could that possibly have anythimg to do with it

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Are you serious? Why would you even mention a heater core leak in regard to a transmission shift issue?

You need to know what items determine shift stratagy to solve this.

eg: TPS Sensor, Various Trans Sensors and Solenoids Etc.

Posted on Apr 30, 2010


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My monte carlo is shifting hard

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2002 Monte Carlo

Sounds like a transmission modulator. Its on the back of transmission with the vacuum line running to it.
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