2006 chevrolet trailblazer ss: - i brought it in to have the transmission serviced - i brought it in a few days later so they could check the level of the fluid, they said it was too high and they drained some out. - now they say that the dip stick shows that there is 3 times too much fluid in the truck and it does not engage gears even if i keep my foot on the brake. What is going on with my truck?

SOURCE: transmission fluid level?

There is a 11mm plug on the passenger side of the trans near the axle shaft. Remove that with the car level, trans hot, and engine idling. Fluid should just come out of there when its full.

SOURCE: remove and install battery in 2006 trailblazer ss

I actually have one of these..lol It is not difficult. remove ground wire first then positive. it will have a hold down clamp on the side of the battery on one side. It will be most probably be a 13 mm. remove this and then reverse precedure to install. You will loose your memory on all your electronics if you do not supply voltage to your cigarette light plug. It will not hurt anything but your car will have to be programmed, ie radio stations theft lock on radio if it has one, and it will take your car about 100 miles to relearn and callibrate the on board computer. I hope this helps you some.

SOURCE: wheres the tranny dip stick

If it is an automatic, the end of the dipstick should have a yellow plastic handle which should be located to the right rear of the engine compartment (facing car). If it is a straight drive, there is no dipstick. You will have to find the fill plug and take it out. The gear oil should come up to the fill hole.

SOURCE: Transmission fluid type and level

This is complicated.... Ok, your right, no dip stick is there! This is how it works.
Underneath the car, there is a plug (11mm) on the transmission case on the passenger side. It is about 3" up from the pan edge and on the front side of the case. With the engine running in PARK, remove this plug. If trans fuild doesn't run out of the hole, the level is low. Pour it in the hole on top (where the red cap is) until the fluid runs out - all while the car is running. Once it is roughly dribbling out, the trans is considered full. replace plug. Your done!!
Easy ehh? Dexron III fluid

SOURCE: 2006 trailblazer ss automatic transmission problem

You friend broke the low one way clutch. He was rolling backwards and shifted into drive and floored it before the vehicle came to a stop.