Bad head

[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!!!!!

[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?