99 Sierra Stalling At Random

[John Peters]

http://www.gm-trucks.com/forums/index.php?showtopic=132341

 

I may have posted the above question to wrong forum. Summary: 99 5.3L Stalls at Random times. New Fuel Pump, filter, pressure sensors and new Crank Sensor. Still stalling seems to be getting worse (more frequent and now won't restart even after 15 minutes)... No OBD readings, not a relay issue either.

 

Some forums state a vacuum leak could be cause, others say it could be PCM or EGR. Note EGR is $198.00, at local Napa can you believe that?

[GMstrong]

One thing thats bad about new truck you can go to junk yard and pull the parts you need,you have to buy on new.

[Kramer]

http://www.gm-trucks.com/forums/index.php?showtopic=132341

 

I may have posted the above question to wrong forum. Summary: 99 5.3L Stalls at Random times. New Fuel Pump, filter, pressure sensors and new Crank Sensor. Still stalling seems to be getting worse (more frequent and now won't restart even after 15 minutes)... No OBD readings, not a relay issue either.

 

Some forums state a vacuum leak could be cause, others say it could be PCM or EGR. Note EGR is $198.00, at local Napa can you believe that?

 

I read the posts from the link above, I agree, I think you have a bad pump, hopefully there was a warranty.