RE: Head and Valve Issue

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RE: Head and Valve Issue

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Hummer Forums >> Hummer Lineup >> Hummer H3 >> H3 Frequently Asked Questions >> Head and Valve Problems. >> RE: Head and Valve Issue

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RE: Head and Valve Issue - 7/24/2007 10:58:57 AM

Dennis

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Do you have a K&N and did it run bad?

(in reply to HummerGuy)

Post #: 91

RE: Head and Valve Issue - 7/24/2007 11:29:15 AM

HummerGuy

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No, it ran fine, and yes, I do have K&N, but this isn't the MAF, it's the MAP. Two different things. The MAP measures air pressure in the engine, not air flow.

(in reply to Dennis)

Post #: 92

RE: Head and Valve Issue - 7/24/2007 11:31:18 AM

Dennis

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Really..Interesting, didn't such a thing existed....Thanks for the clarification

(in reply to HummerGuy)

Post #: 93

RE: Head and Valve Issue - 7/24/2007 11:36:51 AM

HummerGuy

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I didn't either, until I got the MAP error message on my OBDII scanner. Mike had it replaced. I'm going to pick it up in a few hours. I had that, the rear fluid sprayer motor replaced , the warped a-pillar covers (again) replaced and the loose half-shaft checked. I'm in line to get the new one, whenever GM decides to make the damn replacement part

(in reply to Dennis)

Post #: 94

RE: Head and Valve Issue - 8/2/2007 9:48:47 AM

a04h2

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chevy colorados have had the same cylinder head issue

(in reply to Dennis)

Post #: 95

RE: Head and Valve Issue - 8/2/2007 9:56:06 AM

HummerGuy

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That figures. And then GM was playing dumb when it first happened. You think if it existed in one car with the same engine they would acknowledge it earlier. They probably thought they had it fixed, or maybe it just happened with the '06 Colorado's. Interesting

(in reply to a04h2)

Post #: 96

RE: Head and Valve Issue - 8/2/2007 11:59:45 AM

RealJeep

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Hi Group,
Just bought my H3 in May and the steering column is clunking but that's another thread. My question is...Did GM fix the head and valve problem or is it still an issue? Mine is a 2007 (Late Production) with the relocated window controls.

(in reply to btstyx)

Post #: 97

RE: Head and Valve Issue - 8/2/2007 7:34:28 PM

a04h2

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there is either a tsb or campaign to replace the cylinder head on this issue. if i understand correctly the exhaust seats are loosening from the head.

(in reply to RealJeep)

Post #: 98