The plastic tab holding the accelerator pedal against the metal bracket breaks. This happened on my '05 Aviator and left the accelerator pedal so it would only move about an inch. You will get no engine warning lights or transmission warning lights if this happens. It acts like it is in limp mode. You can repair this temporarily with speaker wire by tying the plastic tab to the metal bracket on both sides as tightly as possible and this will give you full pedal movement again. The throttle cable must be replaced for peace of mind. To get to the accelerator cable (it sits on top of the motor) simply remove the nuts holding the plastic cover on top of the engine. This only takes a minute to remove it and a couple minutes to move the plastic tab against the bracket and secure by wrapping wire around the plastic and metal to hold it in place.
The steering may develop a clunk type noise from the upper intermediate steering shaft. Our technicians tell us that you should check with your local GM dealer to find out what the latest repair is for this condition.
A vacuum leak from the PCV grommet vacuum leak can cause the Check Engine Light to illuminate. The molded rubber hose connections may crack and collapse, causing the vehicle to run roughly. A damaged PCV hose will require replacement.
Nice ride purchased at 85K miles. Now at 93K. Have had to replace rear wheel/hub assembly at $500 cost. Have had to replace right front brake caliper. Engine light/codes report lean in both banks so replacing fuel filter (difficult for do-it-your-selfer on this model due to location) and DPFE sensor (last 65K or so). Also have replaced main drive belt due to deterioration and several of the rubber hoses (PCV and fuel regulator vacuum lines) at intake deteriorated so bad they required replacement (vacuum leak). Lower ball joint on front must be replaced prior to next state inspection. Tire pressure sensors alerted me to tire losing air and was glad to have that info when I located screw in a tire.