Question about Buick Cars & Trucks
You could probably do a world of good by replacing the transmission fluid. The fluid may of never been changed before and possibly some dirt got into your vacuum modulator ( or throttle cable linkage to the transmission). The modulator takes signals from the load on your engine and tells the transmission when to shift. If that modulator or whatever sensor is used on your particular car gets worn out or loses it's vacuum seal then the transmission will not get the proper signal when to change gears.
You might want to go on to YouTube and see if there is a repair video for your GM car. Seeing how it is a 1988 it probably still uses engine vacuum hoses to control the transmission shifting.
Try this link:
Posted on Nov 20, 2015
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Posted on Jan 02, 2017
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