I'm pretty sure ChevyMgr knows what he's talking about being a service manager and all. The computer can't tell what kind of tires are on your car. It can take performance parameters from other sensors on the drivetrain, but tires have absolutely nothing to do with emissions performance unless you've changed the size.

 

Who am I to argue with the owners manual. After all mine states that I can arm my alarm by using the the door lock switch on the door, but it doesn't. In 06 it did but not my 07.

One thing you learn in the automotive repair business is that anything is possible, but not everything is probable.

You need to get the code pulled and you will know why the light is on.

 

You said it brotha.. x2 on that.. w/ cars u just never know

just get the code pulled to find out what the issue is.
easiest way to handle a check engine light

 

My '08 HHR SS will. It's just that the lock light that used to flash...doesn't. I dun know why Lucy!!

 

Took hhr to the dealer today . Scan code is 0301. meaning mise fire cyl #1 Also tech said excessive carbon.
they removed fuel rail and cleaned also replaced spark plugs-and did tune up
PARTS $63.95
LABOR 3HRS $244.90
TAX 24.71
TOTAL $ 333.56
TECH SAID TO MAKE SURE I CHANGE OIL EVERY 3500 MILES
WAS THINKING ABOUT 12 MO. 15000 MILES WITH AMSOIL
ANY THOUGHTS
ANDY
P.S. IVE ONLY HAD THIS HHR 2 MONTHS
2006 2LT 66000 MILES

 

I run the Amsoil in my car and dont have any issues like that. My oil still looks very clean, much cleaner than regular oil. 3500 miles on your oil change is BS anyway as new car manuals usually say every 7500 miles. Something else is or was wrong with the car and I would hold onto your paperwork as it might come back. All the years I have driven I have never had anyone tell me the problem was due to the oil. It could be just a faulty plug but your oil did not cause it. I would still go with the Amsoil, I have it in all my cars and bikes and noticed how much cooler my V-Rod ran with it.

 

Actually BOTH are BS!!

Did you ever hear of the OLMS??

Where in the HHR manual does it anything about 7500 mi.??

 

And you wonder why cars always have girly names......