Bad head

[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.