Quote:
Originally Posted by hayhauler71
Possible alternator belt slip
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That is what I was going to say. With the momentary unloading of the engine while it shifts it may just be a belt slipping a little. I would check your tranny fluid though. Be sure to check it at driving temp on a level surface.
I like to run it through the different gears once while stationary Park, reverse, drive, 2, 1 etc, right before I check it.