Hello everyone, first I must note that I am new to the forum and the Hummer community. I recently purchased a 2006 H3 from a used car dealer. Base package, auto, 65k miles, no accidents, no CEL. I fell in love with it after test driving and noticing how smooth the ride was. I did notice, however, it does have a slight vibration when at a stop...it idles right around 600-700rpm and when I start to drive the vibration is gone...smooth as butter. I've done some research and noticed that the bad head/valve problem is notorious on this model, so I'm a little worried about that. I would appreciate it if anyone could give some insight and give some tips on what to do and to look out for, thanks.

 

its minor, its normal. the i5 has a slight vibe. I ignored it at first but when I try ! I can feel it

 

Welcome. I slight vibration on an I5 is normal. If you don't know the vehicles history, do a search on this forum for items such as throttle body cleaning, maf sensor cleaning and fluid changes. I hope you enjoy your new ride.

 

I agree, it's normal.
My late build 2007 has always done it.

 

Thanks everyone! That puts my mind at ease. I'm going to have a full service done at a local Chevy dealer soon and look into cleaning the throttle body and maf sensor also.

 

Full service what? At 65K there isn't really anything to do, except change the oil when the CHG OIL message comes up in the DIC.

 

"local Chevy dealer ",,,,yikes!!

 

The only full service the dealer will do is to empty your wallet for no reason.

The only thing I would do is change the fluids, engine, front and rear difs. & transfer case, because you have no idea when they were changed last. Don't worry about the transmission fluid at this time.

If you cannot change them yourself (it's easy, you would save mucho $$$ and
it's a great way to learn about taking care of your vehicle) then DO NOT have a dealer do it ( $$$$$ ) or a chain lube place (clueless, they will always try to upsell you $$$$).
Take it to a good independant garage.

 

Sorry for the late reply. I didn't realize I would get Change Oil light on the dash. I just like to take a lot of precautions but I will hold off on that for now. All fluids look good so I'm planning on cleaning the throttle body and maf first. I'm considering installing a Jet Performance Throttle body spacer while I'm already at the task. Suggestions? opinions?

 

youll find here ppl say its a total waste.
I guess if it did any good the mfgr would just make the tb a little longer huh.
search and find