2007 Chevrolet Colorado Past Several Weeks Occasionally First Drive Morning Get

2007 CHEVROLET COLORADO
134,000 MILES
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CINDIM09
  • MEMBER
  • 1 POST
For the past several weeks, occasionally when I first drive in the morning when I get to 30-3me my rpm gauge starts jumping up and down and it sounds like its trying to find a gear or something. Also its seems like its taking a little too long to shift into the higher gears. I had the transmission fluid changed about 4000to miles ago because I was told it was really dirty but I wasn't having problems at that time. I now know there is controversy about changing the fluid. The only code found so far is p0406 for exhaust recirculation. Check engine light is not on.
Jan 5, 2013 at 4:05 PM
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HMAC300
  • Experienced Mechanic
  • 48,601 POSTS
there is no such code have it rescanned and clean battery terminals may be a bad ground
Jan 6, 2013 at 8:24 AM
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