2006-2009 Chevy Trailblazer V8 6.0L. 2006-2008 Chevy Trailblazer V8 5.3L. 2005-2006 Chevy Trailblazer EXT V8 5.3L. 2007-2008 Chevy Tahoe 4.8L 5.3L. Waitting for 20 seconds after ignitting, step on the throttle to the engine for 3000-4000 rpm, wait for 10s; release the throttle to the specified idle speed for 10s.
