jjdurrant

Hey guys, my check in light came on the other day on my 2007 LT. I went to autozone and they said cylinder #3 is misfiring. I heard there was a TSB on the 2007 that this should be covered under the 100k drivetrain warranty. Does that sound accurate? FYI.. it was a rental car and I am the 2nd owner in case that matters. Vehicle has 56k miles.

windsmith

I heard that some engines had incorrectly installed piston rings, but I can't find the TSB in the list.

https://www.chevyhhr.net/forums/show...ighlight=rings

Anyone know how to make the TSB thread more easily searchable? Currently I have to open each page and search for text in the page.

ChevyMgr

The issue with the heads is the valve guides becomming loose.

Use the "Search this thread" option in any thread to find posts. Keywords must be more than 3 letters.

jjdurrant

Yep.. dealer said it was a valve seat issue. They have had it for four days now. I am enjoying the rental.. 2010 Traverse.

kishasara

Hey, this just happened to my HHR... Misfire on Cylinder # 3... I don't have a warranty on my HHR... What do I need to do to get this fixed?

ssdivin

My 2008 ss had a p0301 and p0303 both misfires aftermarket warranty will not cover mine so I put it in the shop yesterday new head studs performance pistons machined head stage 2 clutch new flywheel green stuff pads and new drilled rotors

windsmith

If you're out of warranty, you probably have a good case for GM to cover the repairs, due to this being a known issue. See what your dealer will do for you.

jjdurrant

Well for those interested, the dealer did end up reseating the valve on cylinder 3. Total cost would have been $4400. Thankful for powertrain warranty!!

1970judge

4400$ for a new valve? LOL. I see GM is still excessive on their repair bills.

jjdurrant

Apparently.. LOL