So, lately its been getting worse and worse. When I fire her up she tries to stall for about 3 to 4 seconds before firing up. IM thinking fuel pump or FPR. I removed the vacum line on the Fuel Pressure Regulator but no fuel. =[ So I may just dish out the 200 bucks for a new fuel pump assy and hope it does the job. keep in mind I still get full throttle response with no issues. Just starting my baby is the problem ='[

 

If you turn the key to run without starting, can you hear the pump cycle? Does it sound funny at all? Any lack of power on the top end?

 

Yea I can hear the pump. Its the first thing I checked lol. I am also due for a oil change but as silly as it sounds im taking everything into consideration. Its gotta be something to do with the fuel system.

 

What is the year and mileage on your truck?

 

2001 with 130,000 miles

 

I actually have the same issue. It only occurs on cold starts. It has been doing this for a while now, I haven't had too much time to really dig into it. I replaced plugs with no change.

 

have been having the same problem too but havent put too much time into the problem. mine has 125,000 its an 03.

let us know if you find a cure

 

Have you guys with more then 100k miles ever clean your intake/throttle body?

 

This time of year mine sometimes won't start on the first crank. have a friend at work that has the same problem right now on a completely stock tahoe.

 

Yea it kinda scared me for a while but figured its nothing major sense she runs really good when she actually gets started. I have not cleaned the throttle body but did pull the intake off and cleaned what i could on it. When I finger it out you all will be the first to know. Thanks guys.