1999 Chevy Silverado - Sluggish Acceleration?

[turtlecruz]

did you ever find out what was wrong with the truck i have the same problem

[mobilervdj]

Do you have a check engine lite?? Get it scanned and if it pops P0171 and 172 That's a vacuum leak. I'd look at ex gaskets. as far as running Cleaner in the engine every 3 mo. that's over kill. you can burn up the fuel inj.