I have an 2007 Tahoe LT 2 wheel drive 5.3 L J code. I have replaced MAP, MAF, Throttle body, Accelerator pedal sensor, ( have reset the Throttle body and Pedal position sensor ) Fuel pump, I can't remember what it's called, but had to remove spare tire to replace the piece right above spare. It will sit and idle perfect, only code it has is the oil sender unit.
If you put it in gear, put your feet against the seat ( not touching the accelerator ) it will slowly pickup speed, I can get to 15 mph in my driveway without touching the gas pedal. On the street it will go fast enough to shift gears.
NO CODES show up.
Where do I need to look ???? Stumped
Thank you in advance