Question about 2004 Chevrolet TrailBlazer
The VVT (variable Valve Timing) solenoid may be dirty and will need to be cleaned or replaced. Poor maintenance (lack of oil change) will cause carbon and sludge to accumulate on the VVT screen causing the VVT to stick which will cause the issues your experiencing.
You may get lucky by trying to clean the VVT by adding a can of Seafoam to your engine oil and running it in there for the next 250 miles and then giving the Trailblazer oil and filter service with the recommended 5W-30 weight oil, anything heavier may cause the VVT not to function correctly as it is now.
Start with the simple and add Seafoam (Auto Zone, Part Source) carries the product. Service the engine oil after 250 miles, and at worst you may have to replace the VVT solenoid which is simple to do. Keep me posted if you have to replace the VVT.
Thank you for using fixya and be safe
Posted on May 13, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 24, 2014 | 2003 Chevrolet TrailBlazer
Mar 19, 2013 | 2002 Chevrolet TrailBlazer
Aug 18, 2012 | Chevrolet TrailBlazer Cars & Trucks
Sep 02, 2010 | 2004 Chevrolet TrailBlazer
May 06, 2009 | 2007 Chevrolet TrailBlazer SS
Mar 19, 2009 | 2004 Chevrolet TrailBlazer
Feb 23, 2009 | 2004 Chevrolet TrailBlazer
Dec 17, 2008 | 2004 Chevrolet TrailBlazer
Jul 30, 2008 | 2003 Chevrolet TrailBlazer
772 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: