It's doing what everyone here is saying. I tap the fuel at a stoploght and it stops. Mine is a 06 with a 2.4 and has 142,000 miles. I bought it last year with 119,000. I sold it new to the guy I bought it from. It is a Spring Edition.

 

Mine is a 2011 2LT with 15,000 miles on it. I've had it for 3 months/4,000 miles. and it's doing exactly what's described here. I'm taking it to the dealer in a couple of weeks for this, and I'm going to print out this thread and bring it when I do. HipHotRod, do you care to add more before I print this out ?

 

I have been following this thread because I have a concern too.
I have a 08 LS auto. 46000 miles. No MIL or codes. I have a Gibson cat back exhaust system installed, I can hear the engine. At 40MPH and above at light throttle application, the engine RPM's would surge up and down about 400RPM's. It is the TCC (Torque Converter Clutch) disengaging, RPM's go up, and engaging, RPM'S go back down.
I took the tec from the Chevy dealer for a ride and he hooked up his scan tool and watched. The scan showed at 5% throttle the TCM (Trans Control Module) was signaling the torque converter clutch solenoid valve to release the converter clutch. That's what caused the RPM'S to rise because there was a 5% throttle applied. A second or so later, the TCM signaled the same soleniod to engauge the clutch, the RPM'S droped down. Over and over again. The clutch should not disengage with any throttle untill the speed drops below 39-40 MPH. Lot's of ware and tear on the clutch.
So we determined there was no hardware problem, every thing works, it's a software problem.
Tec checks for a software up-grade from GM.......None.
Since the problem only started maby 9000 miles ago, and got worse with time,The tec "reset trans shift adapts" with his scan tool...........Bingo, problem solved!
The TCM computer has a adaptive shift logic software that learns how the car is dirven and adapts to it.
I had to pay $101 for this service. I said power train warranty should cover it. He says no parts were replaced so no warranty. I asked what if this happenes again in 10,000 miles, witch it probaly will, faulty adaptive software. Service guys looks down at the floor and says, you haft to pay to reset again!........Wow GM, That's pretty bad.............
I am happy that it is fixed, but when it needs to be adressed again, I'm going to make some noise
Hope this helps others..........Buck

"reset trans shift adapts" with his scan tool...........

Im NOT paying to have this done. No way, no how.

 

As I read your first few posts i was thinking this sounds like either weak brake booster, high idle or torque converter engaging. Sucks that these new cars are so computer dependant. Hopefully it does not come back for you.

 

Don- Hope your ride is straight now for good.

Sorry if this was previously mentioned: but has anyone removed the TCM fuse for a bit & then replaced it & hit the hi-way ?

 

LOL, They wont do it to mine Billy, this was from someone that had it done and it FIXED the problem. Yes, tried the fuse reset as well. Needs to be manipulated with the scan tool. Thanks though!

 

Bummer Don- I thought ya meant your ride..

 

Mine has done that as well, but not that bad, and mine is a 2006 with only 50,000k on it. I also asked a dealer about it, he looked it up and said there were no factory recalls, but there had been complaints about it. He pulled up THIS page, I kid you not, and he told me to go here for some off dealer solutions maybe. Then, he submitted a complaint for me to GM. Very nice guy. I just live with it for now.

 

Is your dealer friend by any chance named Brad?

 

Please, let me know how things go when you take your HHR into the dealership for this.

Michelle, Chevrolet Customer Service