I have recently purchased a 1 owner 2005 GMC Envoy with the 4.2 I6 motor to pull my camper. The vehicle has 97,000 miles and overall in decent shape, needs some TLC here and there but ill get it waxed this weekend and looking good. What I did notice is when it idle its a little rough and unsteady. When I accelerate it hesitates just a second and then it runs perfectly and smooth until I stop and it has to idle. Later this week I plan to do an oil/filter change, spark plugs and clean the throttle body. I also plan to run some SeaFoam through the gas and replace the air filter. This vehicle hasn't been used much recently by the previous owner so it has been sitting for a few months.
Anything I am missing here? I am assuming my issue is the plugs and throttle body. The car has no codes according to my reader and no warning lights.
Anything I am missing here? I am assuming my issue is the plugs and throttle body. The car has no codes according to my reader and no warning lights.