Question about 1990 Buick Riviera

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Used 1990 Buick Riv trans slps in & outta gear; restart to engage

Shortly after install of used transmission, start car, put in reverse - not engage, put in drive - not engage; restart ignition, engages. Sometimes when taking off w/cold engine, tranny slips into neutral. Restart ignition to get in gear....dangerous!! Could this be a computer issue? The car has hardly been used since install & garage says they can't fix it....their only job was to install.

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  • momof6k Dec 30, 2008

    The fluids and filter are new; car has hardly been driven since install. Mechanics say the transmission is good.

  • Josh Crager
    Josh Crager May 11, 2010

    have you checked all the fluid and changed the filter?

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The only other thing i can think of that would cause this problem is the valve body inside the transmission is leaking and/or cracked. I have seen this several times before- it will shift "wierd" and slip also, normally with no pattern whatsoever.
A valve body is not that expensive to change, but I sugest you have it looked at first..

Posted on Jan 06, 2009

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Not a computer issue. Transmission has problems could be filter stopping up, which also means problems.

Posted on Jan 01, 2009

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