rough idle

hey all


i have a 99 silverado z 71 with 92000 mile on it and was woundring why it idles rough,seems to drive good but when im in park or at a stop light i feel it idle rough,just changed oil about week ago and changed spark plugs not to long ago. thank for any help

Fuel Filter
B-12 the throttle body
Check air filter.
Unplug - battery cable and let it sit for 15 minutes and hook it back up.
Sometime your computer needs to be reset.

thanks gschretter ill try that .......

What size engine? 350? Look futher through this forum. I have a write up on what fixed mine. 91 Silver. 4.3ltr,w/ manual trans. 160K+.