G can drive it for 2 min and all the gears do not work turn it off engine turn it back on and gears are back only for few minutes why?

1) How's your fluid level?

2) When did you last replace your filter?

3) When it shifted, did it go trough all the gears as you accelerate or did it just stay on one gear and never shifted?

4) How's reverse, does it slip out too after 2 - 3 min?

5) As you first able to shift into gear, you can drive it for 2 to 3 mintues and it just suddenly slip out of gear?


.... could be a number of different things. Maybe even burnt out clutche(s) inside your transmission

dont do a peel out

Fix your car right away by clicking the link I attached 2006 Hummer H3 Service Repair Manual Download

Read the trouble codes for your automatic transmission using a scan tool. I like the wireless ELM327 OBD2 adapter and OBD Fusion app.
The trouble codes will tell you why the transmissiion is putting the car in limp mode.

Hello! The Drive-Cycle is as follows...Check engine light off, codes cleared; cold start...Warm up engine 5 minutes...Drive (w/ steady throttle) at a steady speed between 40 and 60 mph for 8 min...Stop and idle 3 min...Drive (w/ steady throttle) at a speed above 20 mph for 2 minutes...Turn key off, leave off 10 min...

Guru.............Saailer


I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

what type of car is it , did you just add fuel ,have you checked the basics ,oil antifreeze ,is there any check engine lights on ,the more you let us know the better we can help you , we are here waiting to help. Thank You .

Check the transmission fluid level and top up

you have a bad pump in you tranny

try thinner oil in the gear box also bleed the cluch and adjust it this should fix the problem
cheers tricky85

plugs/wires, fuel pump, fuel filter, maf, bad fuel pressure reg. depends on what it drives like, hard to answer without driving it