My 2006 hummer h3 stalls when tapping the gas like parking or going slowly in reverse today I ran the air and it stalled like 6 times and the last time did not want to stay on but when I turned off the air it started stayed on and got me home then the window seemed to have little power what can this be

 

thoroughly clean the throttle body with throttle body cleaner and clean the MAF with MAF sensor cleaner

 

"Window seemed to have little power" means your battery is probably as old as this thread.

 

I used sea foam to a lean the throttle but I will try sensor as well also when it stalls the only light that comes on is the battery

 

take the intake off and look at the throttle body. black bad aluminium good. you have to open the flap to see. just disconnect the harness plug when doing so. in case you like to have fingers on your hand

 

READ THIS:

https://www.hummerforums.com/forum/h...what-do-33916/

Also:
Let's try the Free stuff first.
Check ALL battery connections for corrosion inside the wire.
Try to remove and twist the battery terminals (positive & negative) without using a tool to loosen them. The OEM terminals are not very good.
If you can twist or remove them without a tool replace them with military style terminals (positive and negative are different sizes) or some car stereo style.
Check the ground from the battery to the engine block.
FIY for Optima, Optima batteries can have a dead cell just like any other battery and test just fine until there is a load on them.

 

Buy crappy fuel, get crappy results. Nough said for this OLD Thread revival.