1999 Chevy Cavalier

Tiny
OLE_SSGT
  • MEMBER
  • 1999 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
I have a 99 cavalier with auto transmission. When the car gets warm, it starts shifting hard and the ETS light comes on. I have replaced both oxygen sensors and the IAT Sensor with no luck. I had Advanced Auto check and there is no error code on the engine. Any ideas what I can try next?
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Monday, June 21st, 2010 AT 5:24 PM

2 Replies

Tiny
BLUELIGHTNIN6
  • EXPERT
The transmission fluid and filter is the place to start since it has high miles. The ATF and filter need replaced
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Monday, June 21st, 2010 AT 5:29 PM
Tiny
OLE_SSGT
  • MEMBER
Turns out I had a throttle position sensor and a MAP sensor that was bad. I was told that either one could cause the transmission to slam into gear.
Car is fixed.
Thanks
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Monday, July 19th, 2010 AT 12:11 PM

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