After replacing the cracked head we were test driving the Grand Prix. It was shifting hard. I know these have known issues with pressure contol solenoids. I brought it back to the shop and the fluid was low, but not low enough to cause problems. Topped off flu...

FIX posted 4/10/2014

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle