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Have a 2002 GMC envoy SLT. 3rd owner, so not sure if maintenance was done as it should have been, but has just over 200,000 mi now and still runs great, so I would assume it was taken care of well. My problem happened about a month ago. Was driving fine, then all of a sudden acted as if transmission was in neutral. Coasted to side of road to check tranny fluid. The dip stick was clean-no fluid on it. So I walked to gas station and bought a bottle, put it in, and restarted engine-started shifting as if nothing had ever happened. A week ago, started hard shifting until its warmed up(?) about 10-15 min of driving. Also had some dirty reddish puddles between where driver side tire and motor are after car has been sitting. Fluid now reads over full when checked with car running, after warmed up...any ideas??

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  • Cars & Trucks Master
  • 1,615 Answers

Have your transmission rebuilt.

Posted on Nov 19, 2013

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6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: I bought a 2000 Hyundai

The input and output transmission sensors may be bad. My car had this malfunction. I replaced the sensors and have had no more problems.

Posted on Jul 21, 2008

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SOURCE: 1989 volvo not shifting into gear

The only fluid expansion tank I know of is for the cooling system,and if that is the case you my have a leak in the transmission cooler that is built into the radiator.

Posted on Jan 03, 2009

  • 104 Answers

SOURCE: 1991 3.3L Plymouth Voyager, Transmission temp sticks in first.

John, this sounds like a valve hanging up in the valve body. The car shifts when the govenor pressure overcomes throttle valve pressure in this valve body.

What is the condition of the fluid? Is it at all dark or grey, does it smell burnt? It should be a nice light pink. If not, have the fluild and filter for the trans changed. This may take care of the problem.

If the oil is really burnt, you are at the end of the life of the clutches and you are looking at a complete trans rebuild. If the oil is ok, a trans shop should be able to take just the valve body down, clean it and eliminate the problem without overhauling the entire transmission

good luck

Posted on Feb 09, 2009

  • 1 Answer

SOURCE: 1999 Saturn SL2 shifting problems

I also have a 1999 sl2 saturn . I was having about the same problem but mine also did not want to go into reverse somtimes as well . Ichanged my fluid and filter and put in a good trans conditioner and just about all my trouble went away. The trans filter is just like a oil filter it just screws on the outside of the transmission . It is located down under the air filter housing, and the fluid plug is right on the bottom of the trans.

Posted on Mar 29, 2009

Molson02536
  • 3854 Answers

SOURCE: VERY HARD SHIFTS AFTER ENGINE IS WARM.

Your going to have to get the car scanned for the DTC code. The Check engine light indicates that the ECM has detected an issue with the cars engine or transmission performance. Your hard shifting could be the failure to the Pressure control solenoid (PCS), that would be a DTC code P1811. The PCS is located under the trans axle side cover assembly. IF you go to Auto Zone, they can scan your car free of charge and can give you the step by step instruction to replacing the part that may have failed. Good luck and keep me posted, be glad to help.

Posted on Jun 12, 2009

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