Yo, so i was driving my 09 hhr ss last night and i had an instant loss of power. the car slowly revved down till about 500-1000 rpm. I shifted it into neutral and the car died. it still turns on and runs at between 250 and 500 for a minute until it dies again.
It has had rattling from the timing chain for the last month but i dont think thats whats going on.
Anything magic we can work?

 

If it was timing chain rattle, then the chain may have jumped a tooth or 2. AND if that's the case then it's on the verge of complete failure. No magic can be done. Don't start it any more. Time to tear it down and fix the timing chain issue first.

 

Did the ENGINE CHECK LIGHT come on? If so, what was the code that was downloaded?

"It has had rattling from the timing chain for the last month" - that makes me wonder what other maintenance items have been neglected.

 

Yup! DO NOT START IT!!! You might be lucky and it only jumped a tooth or two. Remove valve cover and see if you got slop in the chain. If you got slop, change it out. DO NOT ATTEMPT TO START!!!

 

If the chain needs to be replaced, the Cloyes 9-4201SX is for the SS 2.0 , the crankshaft gear is different in the SS and it is not included in this kit, also the VVT camshaft phasers are different, so the cam sprockets are not included either.
If you need new camshaft phasers ZZP has these take offs,

https://zzperformance.com/products/cam-phasers


while your getting yourself oily and greasy change the balance shaft chain with Cloyes kit 9-4202S.

 

If this engine skipped timing wouldn't it be reasonable to see if the pistons still have tops and the valves don't look like pretzels before getting a chain installed? You know... Just as a precaution.

 

Common procedure, a scope in the spark plug holes should get that answer


These inexpensive on Amazon or EBay and wifi to your smart phone

 

It's seems it's another "One and done" poster. Per his time stamp, he DID return but didn't check in on his own thread.
Sad. We've had so many of these lately. Not getting the reasoning of asking for help then not participating.

Fwiw. I've noticed a lot of these types have something in common. If their user name is a proper 1st and last name spelled with capitals, they usually don't come back. Got a list of these sitting by my home PC.

 

PM me those please, I’ll check them for spammers and other villainous activity.