On my 02 silverado 2500HD, duramax/allison, when i was driving about 40 mph and press on gas pedal nothing would happen, trany would not ****ch up but down like u would let the padal go, engine would not do anything, and then when i would slow down it would go up to 40mph again and same thing, it did that all night and next day it was fine like normal again, whats the problem could be? is this serios? it was cold outside about 20, but day before it was even colder and everything was ok, and truck was warm up and driven for a while, anyone help

The fuel filter would be the first place to look.

Fuel filter was change no long time ago about 1k to 2k ago? and i change it reguraly every 10k or so

Does it seem more like an electrical problem than a fuel problem?

When do you recommend to change the fuel filter? My truck has 33700 miles and has the original fuel filter.

You should be on your third by now:eek: When do you recommend to change the fuel filter? My truck has 33700 miles and has the original fuel filter.

Electrical problem??? some one help?

Could be the Throttle position sensor.:confused:

how do i find it out? is there any test dealer would do since its still under warranty, would the belive me ?

I'm more familiar with big rigs not sure about these trucks yet? I know when I hook up our data link to the ECM on our trucks it will show me that the TPS has a fault code. It will show me how many times the fault took place and how long it took place for. I'm not sure if GM has the same technology that the big rigs have but, they might.
I've had something similar happen to me in a truck. As I was down shifting I let off the throttle, when I went to get the RPM's up to downshift it just held the RPM I was at for a second then it very slowly crept up to te desired RPM. Not sure if that sounds like the problem you had but, I would ask the dealer about it.

Good Luck

yea, it did not happend againg yet, and it has not been that cold either, but if it would happend again, i defenatly have to take it to dealer and explein

thanks

Took my truck to the dealership this morning to get the fuel filter changed. Truck has original with 33800 miles. Told them I wanted the filter to check to see how bad it was, but I don't have a cutter. Any other way of getting the filter out of the housing? (Truck was running as good as new before the filter change.)

Hacksaw around the top 1/2 inch of the can. Just cut the metal, not the filter.

That's what I did right after I posted that. The filter is pretty much used up. It could of probably went a while longer, though.