need a pro- 2001 silverado p0121

User avatar
carriedi
Posts: 2573
Joined: Wed Apr 10, 2013 12:42 pm

Re: need a pro- 2001 silverado p0121

Unread post by carriedi » Sat Sep 12, 2015 11:13 pm

The IAC counts should have shown a low count for the unmetered air. that's what the IAC does. It's a vacuum leak that is controlled by the computer. Glad you found the problem. Hope all goes well now. Happy driving.
Browse "SIMILAR TOPICS" At The Bottom Of This Page.

  • Similar Topics
    Replies
    Views
    Last post