Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Both timing and water pump chain tensioners are hydraulic but only the timing chain tensioner is dependant on Oil pressure. So if noise is on startup chances are it is your timing chain tensioner. GM now has a revised version of this mechanism. The new design has a bump on the head bolt and a retaining clip for the plunger.
Never drive faster than your guardian angel can fly
Last edited by Coby7; 08-23-2013 at 07:38 AM.