engine noise when I first start up the car

[ff_drift_lol]

haha i remember trying to point it out to another tech at work. it never happens when you want it to, but always happens when you don't want it to. you can trace it to exactly where the tensioner is. also, if it's been replaced and hasn't been positioned properly, for example if you just tighten that sucker in and not retract it onto the tensioner (the part were talking about is actually the tensioner actuator) with the valve cover removed and so on, it will mess it up pretty bad and the clicking will just come back. i've had plenty of run-ins with this problem on ecotecs.

 

[07bluebaltx2]

Funny cause it only has about 35k miles on it.

 

[ff_drift_lol]

yep it'll do that

 

[ordlinn]

It is the evap system it is going through it's cleaning cycle. It is normal and that is why it only happens every so often. I just had mine at the shop and had a hard time explaining it to the guys but we figured out that is what it is. Chev has it on their bulletins.

 

[Revenant_SS]

It is the evap system it is going through it's cleaning cycle. It is normal and that is why it only happens every so often. I just had mine at the shop and had a hard time explaining it to the guys but we figured out that is what it is. Chev has it on their bulletins.

The evap self check happens in three's and it comes from the back of the vehicle. It sounds like somebody taps your trunk 3 times. They must have changed how it works slightly because my SS has never done it yet my G5 GT did it on a regular basis.