PCV valve replacement
Thread Starter
Cruising
Joined: Dec 2023
Posts: 14
Likes: 0
From: Dacula, GA
PCV valve replacement
I have a 2004, and wanted to change the pcv valve, watched videos, looked simple enough. I give it a go and I don’t see the pcv. After further research, the pcv is internal? Is it serviceable?
Instructor
Joined: Jan 2000
Posts: 231
Likes: 46
From: San Antonio TX
I'm pretty sure all 2004 (LS1 and LS6) used the "fixed orifice" PCV system.
OP, check the "Normal Maintenance Replacement Parts" (or whatever) section of your 2004 owner's manual. I bet there's no PCV valve part number listed.
Pro
Joined: Apr 2023
Posts: 670
Likes: 358
From: Windsor, CT
04 does not have a PCV valve. The restrictor is built into the valley cover. However, Sometimes it's possible that the RTV used by the factory to seal the unit to the underside of the valley cover has failed allowing oil to get sucked into the system.
