NubianRugby
New member
So it looks like the hesitation problems that I tried to fix by first cleaning and then replacing the throttle body and throttle position sensor are due to bad plug wires. Apparently there's a GM service bulletin about it and if your car has less than 120k miles on it you can get it fixed "free" at a GM stealership. I declined their offer and will swap out the plugs and wires myself.