VIBRATION AT LOW RPM AND OVERDRIVE ENGAGED. Is there a shift kit or can the auto trans be flashed to change the computer settings?

Asked by Feb 20, 2007 at 10:43 AM about the 1991 Chevrolet Corvette

Question type: Maintenance & Repair

overdrive engages so early on this model and with it comes some
vibration.  Is there a shift kit or fluid additive that would help
this?  Not really needed under 60mph?

1 Answer

Hello, The stock chip on the 1991 Corvette is programmed to initiate overdrive at 32 miles per hour. To get away from the early engagement, you cam buy a performance chip which can switch the minimum speed for overdrive to a higher number. Best of luck! CarGrrl

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