Vacuum Hose Diagram

[Rodricali]

Hello, I just have repaired a Chevy Silverado 1500 1999 LT V8 5.3L, the mechanic does not remember where to connect the vacuum hoses, the engine is running but im getting rough idle and random misfire. The Chevy dealer just dont know this car as is a direct import from the U.S.A. and they sell Venezuelian chevy only. I checked under the hood and no diagram on it. any help would be gratly apreciate it!.