Re: Timing Chain Replacement
I just received the summary from the dealership. Apparently they tested the actuator by sending a command to the actuator solenoid. There was NO change in cam position. I pulled the solenoid and it looks alright, although there are some metal fillings on the screens I would like to clean out.
So I guess either the solenoid or the actuator is toast. Would a busted actuator cause the terrible noise I heard? Looking through scott's timing chain "how to" it looks like there is a hydraulic chain tensioner on the lower right tensioner thing. I wonder if that could be toast as well. The engine actually sounds fine when its cold. It's only when it warms up that the sound gets really bad.
Does anyone know what the allowable timing chain lash is? Does anyone have a GM part # for the actuator? I have the number for the solenoid. Anyone have issues with the timing chain tensioner before?
Thanks for the help,