Question about 2004 Chevrolet Cavalier

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2004 cavalier transmission rough shift

Hi Guys. I have a 2004 cavalier base with 120k miles in auto transmission. Every once in a while the car will **** when it shifts. The rough shifting will go away if i turn the car off and back on. This happens every once in a while and not very often. Is my transmission giving out? Thanks!

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  • Chevrolet Master
  • 1,493 Answers

That intermittent rough shift would be caused by the computer.Disconnect the ground post from battery for a couple of days so the computer will reset back to OEM specs when recharged after the battery is re-connected.Computers just need time to "forget"what they were doing and will reset.

Posted on May 14, 2014

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Posted on Jan 02, 2017

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csmock132
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SOURCE: Transmission won't shift!

Does it just not shift up to 3rd or when it shifts to 3rd it is just like neutral?

Posted on Mar 06, 2009

  • 2 Answers

SOURCE: 1996 Chevy 4X4 Problem with Transfer Case & Transmission?

check vaccum actuator on front diff?use vaccum gauge should be 25 to 30lbs to open had same problem 94 gmc sierra ext cabb 4x4 5.7 ordrive tranny

Posted on Mar 14, 2009

  • 158 Answers

SOURCE: 2004 Impala - 115,000 miles - has intermittent hard shifts

The dealer should know this! The EPC solenoid (controls pressure) hangs up with wear and causes the harsh shifts.

Posted on Apr 03, 2009

  • 11 Answers

SOURCE: Transmission occasionaly hesitates and I can feel it when it shifts, more than I should.

There are diagnostic tools that could help detect what your problem is. The Snap-On Modis, or preferably a "Tech-2" GM scanner. Any reputable transmission shop, or GM dealer should have at least one of the two. It sounds to me like it could be the transmissions "EPC" (Electronic Pressure Control solenoid) The EPC controls main line pressure, in an effort to keep shift firmness, and shift duration at one specific level. This is to compinsate for the natural wear a transmission encounters, and to keep emissions as low as possable, by keeping shift duration low. When the EPC malfunctions (and thats somthing that they like to do in the 4t65E), it typically starts to shift harder than normal. They typically throw a P1811 code. (P1811 is a "max adapt-long shift" code) And the malfunction can be intermittent. Hope this helps, and good luck.
Logan

Posted on Apr 19, 2009

  • 179 Answers

SOURCE: Auto Transmission in 94 Chevy K1500 will not shift into 2nd gear

Hi, yes I just had the same problem and the clutch packs inside the transmission are slipping. I had to replace all the clutch packs as well as the bands. The parts for this job really aren't that expensive. you could get everything you need for less than 300 bucks. however labor is where they kill you. It's about a 10 hour job or maybe 12 depending on application. average shop rate 80 an hour you looking at 900 dollars labor plus parts. if your mechanically inclined and have tools you could take your time and do it yourself. you can buy a step by step DVD for your specific application. other wise I would call around to transmission shops. their is a slight chance it may also be your solenoid pack. the best way to confirm is to have a transmission line pressure test done. I hope this helps!

Posted on Jul 16, 2009

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