When im driving I hear a grinding sound off and on as the truck moving. Like a whoop, whoop, whoop sound on driver side. It's a 2003 Chevy Silverado 4w4 z71. What is this?

Christophe Thompson

• 1224 Answers
• Posted on Jun 10, 2008

SOURCE: chevy truck headlights

yes there are 2 align bolts looks like backward hex's
or philip head one on top and one on out side parameter of lite

SOURCE: 2003 chevy silverado

It needs a new right side door module it requires programing

SOURCE: ticking noise 2003 chevy silverado 4x4 1500 comercial

IT'S A BOMB!!! OH GOD YOU'LL BE DEAD WHEN YOU GET THIS.

SOURCE: Ticking noise under the drivers side dash. It

I had this problem while moving. It turned out to be the trip odometer was stuck.

SOURCE: 2006 5.3ltr chevy silverado z71 p0455 andp0449

These codes are for the evaporative emission system.The 455 is the vent solenoid.The 455 is a large leak in the evap.system.The vent solenoid I would replace because they go bad and will not work because they are under the vehicle in the rear of the truck.There is a bulletin for these and the vent valve is installed in another spot.The number for the bulletin is 02-06-04-037E.You should also look for a broken or loose hose or pipe that might have came off.Specially if you ran over something.If none found it could just be the vent solenoid stuck in the venting position.Good luck.