just picked up my h3 after getting head replaced

[wannabeH3]

they had it over night and sent me home with a 2007 mercury mariner rental. it was ok. anyways got my h3 back and it seems to be ok. dont notice much yet. they said i had a 50% leak on cyl 3. ill do a fuel mpg check tonight and then run it for a week and repost the numbers.

[Desert Dan]

I just picked up mine on Wed.

I got the cylinder head replaced on my H3 at 10,000 miles.
Now to get the warranty on the engine extended to 100K.



They said it was a complete head with camshaft and valves installed.
I?ll break it in easy, change the oil and look for any leaks or loose bolts before the next trip

[usetosellhummer]

I'm sure it will be fine, Pray to the Hummer Gods and offer a sicrafice of a hybread

Should be fine, and at least you have that warranty for piece of mind. Enjoy it this weekend!

[fourfourto]

For those who had there head done,I assume they change the oil/filter and coolant .
Did anyone get a hard time getting them to use synthetic oil,or did you let them know before hand?.
I dont trust the dealers and some of the monkeys they got working for them.

[wannabeH3]

pretty sure they dont change the oil or any of that sh it, it wasnt on my invoice.

[fourfourto]

Originally Posted by wannabeH3

pretty sure they dont change the oil or any of that sh it, it wasnt on my invoice.

How can they not change it . When you remove the head you would contaminate the oil and coolant.Usually coolant gets into the oil upon removal.

The dealer should know better.

[GPan099]

My invoice showed an oil change, filter & coolant. Latest onstar report confirmed the new oil life.

[f5fstop]

Originally Posted by fourfourto

How can they not change it . When you remove the head you would contaminate the oil and coolant.Usually coolant gets into the oil upon removal.

The dealer should know better.

I agree, in fact, GM pays them to change the oil AND the coolant after a cylinder head removal.
From the Service Manual:
57. Install NEW engine oil. Refer to Engine Mechanical Specifications .
58. Install NEW coolant. Refer to Draining and Filling Cooling System .

However, all they will be paid for is GM authorized coolant and oil; therefore, getting them to add synthetic will be up to the dealer.

If the head job is done correctly (such as new torque-to-yield bolts used where required, torque is applied correctly, valves are lapped correctly into the new head, it will be as good as new. The quality of any repair is dependent upon the technician performing the job.

[fourfourto]

I figured they would have to change the fluids. Yey! dealer does something right.


Im sure if you were using synthetic they would replace with same ,im sure they know its not good to go back to regular oil after synthetic.
I think Im just planning ahead for for a head replacement

[HummBebe]

Guys,

I have a little chit chat with my Service Guy at the dealship. And we agreed on something


Please do not anticipate this problem.

Rough Idle without the check engine light can be a multitude of things.

Same goes for the Check engine light without the rough idle.

Rough idle with check engine light? Then you are in the head replacement club.

If it happens it will get fixed.

If you dodged a bullet like me, you'll have enjoyed your time with your HUMMER and not have fretted over every mile.

Life is short, just drive it.

My service guy at my dealership, said I should anticipate this problem based on my H3's vintage, mileage, and hard street usage. And I wasn't even questioning him on the topic, he offered his opinion on his own.

[HummBebe]

Nice guy, he wants you to live in a state of anxiety?

Or did you forget you meds again???

[jbiancolli]

Picked mine up today after head replacement. Was fine till I got home - about 60 highway miles. Went to a few stores and it stalled out at idle 5 times. Drove 60 miles back to dealer and left it for Monday. Good thing my loaner was still there. Any ideas?

I'm not worried about it, I'm confident GM will take care of head problems as they come up (even if outside of the warranty period/mileage limit). They know what does and what doesn't result in repeat business and they learned it the hard way.

[f5fstop]

Originally Posted by HummBebe

Guys,

I have a little chit chat with my Service Guy at the dealship. And we agreed on something


Please do not anticipate this problem.

Rough Idle without the check engine light can be a multitude of things.

Same goes for the Check engine light without the rough idle.

Rough idle with check engine light? Then you are in the head replacement club.

If it happens it will get fixed.

If you dodged a bullet like me, you'll have enjoyed your time with your HUMMER and not have fretted over every mile.

Life is short, just drive it.

Thank you, even though the problem is bad for those with engines built prior to 287591, a rough idle with the idiot light, will not always indicate a bad cylinder head (reference the latest bulletin I will be posting in a few minutes). There are many items such as plugs, ignition coils, fuel, injectors, even a blocked air filter that can give the same symptoms and depending on the problem, the same codes.
However, like you say do not anticipate the problem. If it happens, it happens, and like I have said a few times, even if you are out in the middle of nowhere, you have at least a 95 percent chance of putting a few thousand miles on the engine after the light turns on and the idle turns rough. So, the majority will NOT be stranded in the middle of nowhere.

[wannabeH3]

i forgot to mention my mpg after b4 the new head was 13.1mpg and ill fill up tonight and post the new numbers

[HummBebe]

Originally Posted by wannabeH3

i forgot to mention my mpg after b4 the new head was 13.1mpg and ill fill up tonight and post the new numbers

Any news???