Chevrolet Suburban 2008 Peace, mercy, and blessings of God be upon you. Suburban 2008 without 4WD. I bought it about two or three months ago. The previous owner said everything is guaranteed. And I don't want to be held responsible for anything. What I know is: The accelerator gauge goes up and down, and they said it's from the sensor and the throttle body. And the AC is sometimes ice cold and sometimes the cooling is weak. Someone told me it might be the diverter, and I don't know.