I got a 2001 silverado extended cab w/ a 5.3 Vortec in it....every once in a while when I pull up to a stop sign or traffic light, then engine will cut off. It always starts right back up and will run fine...I replaced the fuel filter and checked the plugs...It is not a severe problem at the time, but it is a bit of an anoyance...Thank you

 

maybe a vaccume leak, a big one? That happened to me when i was working on a 84 chrysler v8.

 

Unplug the vacuum hose going into the fuel pressure regulator on the top driver side fuel-rail, if gasoline drips from the end of the hose then the fuel pressure regulator is faulty and should be changed.

9 times out of 10 this is the cause for stalling such as you describe.

 

I unplugged the the hose w/ both the engine off and the engine running....there is a good vaccum on the hose and no fuel leaked either time....

 

Check fuel pressure. Could be a fuel pump going south. Or TU.

 

Cody,
How many miles are on your truck?

 

I will check the fuel pressure...the truck has 145,000 on it...It hasnt really stalled again in the past couple of days, but i'm sure I havnt fixed the problem

 

With that many miles you may want to try going to Costco or Sam Club and purchasing a 4-pack of Chevron Fuel Injector Cleaner (16oz bottles) with Techron for $9.95

Go to the gas pump and add all 4 bottles to your fuel tank then top it off with gas and drive it till it is near empty before you refuel.

 

I will try it...it seems to be doing a little better...It hesitated only one time in a couple days....Thanks, I'll let you know what happens