High RPM and Rough Shifting

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GmChevy1995

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Aug 3, 2023
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Hey guys, I got a 1995 K1500 with a 4L60E rebuilt transmission that is less than a year old. Recently I've had really rough shifting where the truck refuses to shift until close to 3000 rpm wich leads to a very uncomfortable ride. I went and read some forums and googled for a long while to see if I could find the culprit, and the general consensus was the TPS sensor. Well I replaced the sensor and the issue continued. I brought the truck to the shop that rebuilt the transmission and they said that the transmission itself was ok but they weren't getting a signal from the TPS sensor. (the sensor is less than a month old). Ive read more on here that it could be a bad ground or something but really I'm lost. Can anyone help?
 

NickTransmissions

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Bad grounds/short to ground like the shop said. You have to start looking for either missing grounds, exposed wiring anywhere that leads to/from the ignition switch.
 
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