Question about 1999 GMC Safari

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Transmisson slip My 1999 Safari is just starting to **** when it goes from a loaded position (going up hill) into overdrive. Is this my transmission or a computer problem (188,000 km's)

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These do have a "torque converter clutch circuit" inside the tranny that goes out on GMs. Usually anything sensor wise, or anything electronical will set off your check engine light. Is your light on?
If the light is NOT on, than I would say it is surely your tranny.
If light IS on, than it may be the sensor.

Posted on May 13, 2009

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It's the transmission for sure, forward clutches are worn out.

Posted on May 13, 2009

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Posted on Jan 02, 2017

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