Bad head

[mln2963]

My 06 H3 has 7,000 miles on it. Just got back from a road trip from Las Vegas to Boise. I cruised on the highway the whole time, doing 75-80. I got back into Las Vegas and got off the freeway. As soon as I came to a stop light it started idling rough and the check engine light came on. I took it to the dealer and it's a blown head. I know the early 2006s had head problems, but I bought mine in June. I'm not too happy.

[ChiHummer3]

That sucks! Any other indications there was a problem before the bit of rough idling and the light coming on?

I'm an early build too, and am patiently waiting for the light to come on. I hope it doesn't happen - but it sounds like it's happening to a lot of rigs.

Keep us posted on how the fix goes and if they extend the warranty for you.

Good luck!

[XM DUDE]

Bring on that V8, it sounds like the I 5 is becoming a liability.

[HummerHippy]

Yea, that sux. Mine is a Sept 05 build. Sat on the lot for a while. I have 14.5K miles on her. No head probs yet, but I am braced for it if it happens. Good luck. Fix under warrenty and then you should (hopefully) be good to go.

[RubHer Yellow Ducky]

One thing I have learned in almost 60 years.

THERE IS NO SUCH THING AS BAD HEAD

[nmu98]

Originally Posted by RubHer Yellow Ducky

One thing I have learned in almost 60 years.

THERE IS NO SUCH THING AS BAD HEAD

Amen...

[f5fstop]

Don't wait for it to happen, because it might not happen. This is not a new problem and can happen on early model vehicles. Plenty of threads on this forum that mention this head problem.

[Alan06SUT]

I thought this would be a porn thread..

Originally Posted by Alan06SUT

I thought this would be a porn thread..

Disappointed.

[bparker]

Originally Posted by RubHer Yellow Ducky

One thing I have learned in almost 60 years.

THERE IS NO SUCH THING AS BAD HEAD

[1_maniac]

I'm told you should be able to tell the H3's that were prone to bad heads
by where the "GM" emblem is located ... The H3's having the GM logo behind
the H3 logo on the door were early production models, and were having to
have the heads replaced ... Later models have it on the fenders ... This is
not an absolute, but something to watch for

[f5fstop]

Originally Posted by 1_maniac

I'm told you should be able to tell the H3's that were prone to bad heads
by where the "GM" emblem is located ... The H3's having the GM logo behind
the H3 logo on the door were early production models, and were having to
have the heads replaced ... Later models have it on the fenders ... This is
not an absolute, but something to watch for

Yes, it is lame, because it is incorrect. For 06 models, the GM logo is next to the H3 emblem. For 07 models, the logo is move to the rear of the front fender.
NOT ALL 06 models have this problem, in fact, engines built after March 31, will not have this problem, unless a one out of a million. Those engines built before March 31 could have this problem, but are not guaranteed to have the problem.

[Icyelle]

Is there a Vin# cut-off on this problem?
I bought my H3 in November 06 and it has around 14k on it to this date, but I haven't had any rough idling or engine light coming on.

Are they not doing a recall?

[HummerLite]

Gee,
40,000 miles got mine in Aug 05, Engine light came on, Checked codes found misfire cylinder 4, Replaced ignition coil..... Fixed 2 months later engine light again ( got worried again ) Checked codes again found random misfire ( Oh no could be the big one ) Nope cleaned fuel injectors...... FIXED , Btw i'm a tech at a GM dealership..... Buick, Ponitac, And GMC.....no Hummer
Will I have problems with the head? time will tell.
LOL

[DDWH]

mis-leading thread title!!!!!

teeth marks or something?

[HoosierH3]

Originally Posted by HummerLite

Gee,
40,000 miles got mine in Aug 05, Engine light came on, Checked codes found misfire cylinder 4, Replaced ignition coil..... Fixed 2 months later engine light again ( got worried again ) Checked codes again found random misfire ( Oh no could be the big one ) Nope cleaned fuel injectors...... FIXED , Btw i'm a tech at a GM dealership..... Buick, Ponitac, And GMC.....no Hummer
Will I have problems with the head? time will tell.
LOL

So there is no way to know what batch has the problematic head/valves??? No way of knowing when GM caught this and corrected it? I too have an earlier 06 that I wonder about, but the service department says not to worry, unitl it happens anyway.

[ChevyHighPerformance]

Originally Posted by HummerLite

Gee,
40,000 miles got mine in Aug 05, Engine light came on, Checked codes found misfire cylinder 4, Replaced ignition coil..... Fixed 2 months later engine light again ( got worried again ) Checked codes again found random misfire ( Oh no could be the big one ) Nope cleaned fuel injectors...... FIXED , Btw i'm a tech at a GM dealership..... Buick, Ponitac, And GMC.....no Hummer
Will I have problems with the head? time will tell.
LOL

I wonder how many good heads were unnecessarily changed?

[h2co-pilot]

Originally Posted by DDWH

mis-leading thread title!!!!!

No kidding.

[evldave]

Originally Posted by HoosierH3

So there is no way to know what batch has the problematic head/valves??? No way of knowing when GM caught this and corrected it? I too have an earlier 06 that I wonder about, but the service department says not to worry, unitl it happens anyway.

Read F5's comments above. March 31 cutoff date for the new head design. And I'd say we've seen maybe <100 of these here. There were what maybe 20-30k hummers sold before then (including mine). Chances are small (unless it happens to you in which case they aren't).

Do I worry? Sure, I'm concerned it's gonna go, but realistically if it goes, I call hummer customer service have it towed to the closest dealer, get a rental, have it fixed, call GM get my drivetrain warranty extended to 100k, have a new head, a longer warranty, and get to beat the **** out of a rental car for free!!