I have a 2010 gmc sierra, I get that service traction control, stabilitrak, engine power reduced. I changed the throttle body but no change? (Engine light is always on)
I lose power and can't go pass 40 mph. I have to pull over and turn the truck off and wait
a few minutes, until I can drive again. Truck goes loud, and sort of rattles. Mileage is
140 500 estimate. Throttle body was changed but there is no change. Is there anything
else I can check? Sometimes, the dash monitors (speedometer go up and down as well)