GMC K1500 with the 350 ci, and a throttle body. When my truck shifts from first to second, it shifts hard, like the throttle is sticking. When I apply WD-40 to the throttle cable and work it in, it shifts normally for a while then it is back to shifting hard. I only drive it on the weekends, so it sits outside the rest of the week. It shifts fine at any time from 2nd up to 4th gear.
Nov 17, 2008 at 9:38 AM
