My 2000 Bravada has this annoying habit of stumbling at very low speeds when the steering wheel is cut hard to either direction, like when you are pulling into/backing out of a parking space. The stumbling is getting progressively worse, and is now almost to the point of stalling completely.

Any ideas on what I should be looking at will be greatly appreciated. Thank you.

 

Sounds like a fuel supply issue....although I don't know what the turning would have to do with it. Mine stumbles a bit like that if I'm at a stop light and suddenly take my foot off the brake to go forward, and I'm chalking it up to a failing fuel pump as I have a few other symptoms of that sucker goin..

 

I can't pin down the reasoning either. It'll idle all day long just fine so long as you dont turn the wheel.

 

Could it be electrical? I know when i cut my wheel hard, or hold my electric seat button passed the point of no return you can hear my fuel pump waiver(it's loud to begin with).

 

That might be beacuse you are using alot of power. Like if you put the headlights on and push the window controls which should take less power than the seat the lights will dim some.

 

is the RPM's, going up and down alot? mostly at just a stopped position?

 

Just a guess here but it sounds to mean as though your power steering pump is straining the engine when you are at full turn. Why it would be doing that is beyond me but that's the only thing I figure out at the moment.

 

It wouldn't hurt to clean the MAF and EGR.Not surehow the turning is affecting it other than the increased load from the power steering pump (which shouldn't be much until you get the to the end of the steering's travel), but these should be cleaned regularly anyway and they do contribute to the symptoms you're describing.