Question about 1992 Geo Metro

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1992 geo metro

Hi, I have 1992 geo convertible with 3 cylinder engine and an automatic transmission. Lately the transmission stays only in high gear when in drive. I can manually shift it thru the gears without a problem. Does anyone out there have a tranny schematics for for this vehicle or know of a quick fix.
Thanks in advance.

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  • mr geo Aug 02, 2008

    My first 90 Geo had a similar problem. I talked to the transmission guy at the local Chevy dealer and he said that is common with this transmission. What happens is a check valve in the transmission snaps into the aluminum seat so many times that eventually the seat enlarges and the valve tends to stay there rather than dropping back down when is should. The fix was simple. I removed the oil from the transmission. Then I removed the pan from the bottom. This exposed the shifting body. I carefully removed that body and set it on the bench. When I opened it up, there were 5 balls (check valves) . I took it to the trans guy, he examined it and recommended I replace 2 of them. He gave me the balls, he had them because he was doing the same thing when he worked on the Geo. I put them in place, put a new filter/screen on, and a new gasket and reassembled it. It worked perfect. The guy knew what he was talking about and to think I almost got a new transmission instead. Mr Geo Metro

  • tyork9254 Aug 03, 2008

    i have the same problem,,, changed transmissions ,, still have the same promblem!!!!!!!! shifts only manual, except one time it shifted like it should, and on occassions it will go into first gear when i put in drive but it wont shift out and i can pull down in first and it will shift into second ,,, run about a mile and it will go back to shifting manual . thanks for some help ,,, bout to give up on this one...... terry

  • tyork9254 Aug 04, 2008

    took valve body out this evening,,, only found four balls... two seats look ok one looks so so and one looks not so good. where do i get replacement balls and are they bigger? i also need the gasket that goes between the valve body halves.

  • Anonymous Aug 04, 2008

    My 92 Metro auto will start "jerking" at highway speeds (after warm) the shift down to 2nd gear and stay there until I come to a stop and manally upshift to 3rd.

  • Jack Dempsey May 11, 2010

    in 1992 geo metro is the a/t fed ecu 33920-60a4 also the transmission control module

  • Anonymous Mar 17, 2014

    15 vtec 1992

  • Anonymous Mar 30, 2014

    when the car is running it shifts the first 2 gears normal but the 3rd will not go in without hesitating

  • Anonymous Mar 30, 2014

    will not shift into high gear its a automatic



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The check balls I put back in were slightly larger. You should be able to get them from any transmission shop or the Chevy dealer. I got my gasket from the Chevy dealer.

Posted on Aug 15, 2008

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I have taken the valve body out and only see 4 balls (check valves),. two of the seats look ok , one is so so and one looks bad. were the replacement balls bigger? where can i get these and also get the gasket that goes where the valve body seperates? thanks for a response in advance.. terry

Posted on Aug 04, 2008

  • tyork9254 Aug 04, 2008

    sorry for not knowing how to use this site,,,,,, also where is the vehicle speed sensor that i hear so much about ???



I finally figured out my problem after buying a Geo shop manual off ebay. The automatic transmission control unit under the dash had gone bad. $65.00 at the junk yard and two bolts later and it runs just fine.

Posted on Aug 08, 2008

Vehicle Speed Sensor

Posted on Jul 10, 2008

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