Astro/Safari Towing

Last post on Mar 08, 2008 at 7:40 PM

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What is this discussion about? GMC Safari, Chevrolet Astro, Towing, Van

#1 of 1 Towing button activated makes a thud sound when shifting by nichu Mar 08, 2008 (7:40 pm)
Does anyone know what would cause this issue: When I press my towing mode button on my shifter knob, when the car shifts from 1st to 2nd, it makes a loud thud sound. Again I dont know exactly which gear it is shifting in. But it only makes this sound when the tow button is enabled. With the tow mode off, the car shifts just fine? Any help?