I love my SS, I have a LT2 that my wife stole from me, now has 207300 miles, NO ISSUES ever......Bought my SS a year and a half ago...bought with 38K, just turned 60K....dealer took motor and trans out right after I bought it, rebuilt the tranny under warranty...Drove toKey West acted fine.........but the last 4 months the dang thing has been throwing Po0300-Po0301-Po0302-Po0303 and Po0304 coil codes.....I changed plugs/coils....NOTHING seemed to go right, ESC light came on...that was waked tire pressure......but coil codes kept coming back...spit-sputter at 4500-5000..... so tonight I installed new AC plugs....and was feeling up my harness, WHEN, I felt my ground on the back of the head, it felt loose....I wiggled it, then again, and it fell apart in my hand...no a loose screw but a bad joint/shrink tube repair, I guess when the dealer pulled the motor/tranny/cradle.....made a new ground wire, new plugs, and my baby's back!!! I am old skoool.....carbs, points I know....these things.....no so good....but good today!!!

on way to Key West...

 

Happy ending, Cool & Enjoy the Keys.. I used to frequent Sloppy Joes long ago...

 

these rides love to be grounded, glad to hear or read your issue has been resolved

 

Glad you found out the problem

 

I don't know about you, but when I see another HHR SS, I smile.

 

Me too!!!

 

well, spoke too soon....My code PO0301 and PO0017, PO0011, all are popping up....car is running like total crap.....I am at wits end...ran fine for 100 or so miles... it maybe D.O.A.

 

that is great news and glad you figured it out
ground wires are the death of allot of good cars

 

Now switched #4 and #1 coil....white smoking PO2261 code AND PO0301 STILL....WTF????

 

White smoke sounds like you're burning coolant. Better get it checked ASAP.