Question about 1990 Chevrolet Suburban

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My overdrive keeps dropping out for a split second and then back in. What is the fix?

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Don't know the Suburan but suggest you check the wiring connection to the overdrive solinoid as it will be on the outside of the overdrive casing & open to all sorts of wet & muck.
Also check the oil level.
Jim

Posted on Jan 22, 2013

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  • Tom Gillard Jan 22, 2013

    Hi Jim, I have taken this to a X-mission person and they had no suggestion except to drive it till something breaks, then we can fix it...Is there someplace I can find a pic of what you are talking about and where it is located? Thanks for the suggestion !! Yours,

  • Tom Gillard Jan 22, 2013

    ps...it has the 700 transmission.

  • Jim Turner Jan 24, 2013

    Hi Tom. I don't know the Suburban but the switch should be on the transmission. Your local Chevy dealer should have it's location on it's parts computor or try to get a workshop manual. Leaving until it breaks could prove costly! I still think that the problem will be a loose or dirty connection to the switch.
    Regards Jim

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