My transmission will slip shifting from first to second gear

Tiny
HITEDA
  • MEMBER
  • 2007 CHEVROLET IMPALA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 248,000 MILES
When I take off after sitting still for a while, my transmission will slip shifting from first to second gear. When it does this, I can move the gear selector out of drive into 3, 2, or 1, making it drop back into first. After a few seconds in first gear, it will shift to second fine, then to the rest of the gears, like it is supposed to. After this first slip, it will shift through all the gears fine, unless I stop somewhere for a while. I have changed the filter and fluid and the problem is still there, not quite as bad.
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Friday, October 5th, 2018 AT 7:38 AM

1 Reply

Tiny
KEN L
  • ADMIN
Hello,

This sounds like you could have an input shaft speed sensor that is not working right. First lets scan the PCM for codes to see what comes up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is the location of the sensor so you can replace it. Check out the diagrams (below). Please let us know what happens.

Cheers, Ken
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Sunday, October 7th, 2018 AT 11:35 AM

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