My 2001 Buick LaSabre with 106000 miles started hesitating changing gears and roughly doing so. I stopped and shopped for about an hour and started driving again, and it changed gears smoothly with no more trouble. It's due for a tune up. Could a tune up be the problem or it have to be the transmission is failing.
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A tune-up is not going to help with transmission problems. – GdD Sep 18 '17 at 9:30
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Did you do a tranny fluid flush? This helps with reducing shift harshness in general and might(hopefully in your case) be the cause of the shift hesitation!
