I've had my H3 for about 2 months and love it. I'm still learning about these trucks as I never payed them much mind. I bought it mainly for the outstanding offroad features from the factory. I was under the assumption that it was just a base offroad package thinking I just had all terrains instead of street tires. But after reading more I think it may be an Adventure package which would be awesome but I'm not sure how to find out. It is a 2006 3.5 5-cylinder, has a rear locker, skid plates, leather, 285 Bridgestone Duelers, and not sure of the gear ratio. Is there a certain RPO code I can look for or do these features help anyone identify it? Here is a picture just in case it may help.

 

If it has a factory installed rear locker than you would have an adventure package...

 

Great! Thank you so much for the quick response. So that would mean it has 4.10 gears correct? Do it have a low range t-case like a 3.8:1 or 4:1 or anything like that?

 

Yeah, the adventure also came with 285's. The base came with 265's.

some more info: 2006 HUMMER H3 Packages & Options at Automobile Magazine

 

i THINK the gear ratio in the diffs is 4.56 for the i5,3.7 and 4.10 for the alpha v8.
transfer case ratio is 4:1 low range for adv and 2.5?:1 for others

 

Your dash T Case controls will look like this (lit button second from right with the little turned front wheels and an "X" between the rear wheels) if you have a rear locker. If the leather is factory you have a lux off road, which is an upgrade of the adventure to include the luxury interior.

 

Thanks Doc Olds! I was able to find almost a full RPO list and deciphered my codes. And as you just said I learned I have the Luxury Offroad with 4:1 transfer case, 4.56 gears, locker, leather, and 285's! Nice bit of info to learn. However, I also learned mine falls into the caegory of H3's that may have head/valve issues. Fingers crossed! I've read that the ones before March 31 2006 they were covered by an extended warranty and I think a recall, mine was built May 2005 so I need to find out if I'm covered.

 

On your "to do" list - Take the "leveling kit" OFF the list.
Leveling does not need to involve a "kit" - leveling kits are a waste of money.
Leveling costs ZERO dollars, please read this - https://www.hummerforums.com/forum/h...ics-how-11428/

Adjust your torsion bars and then get an alignment.

 

Well I didn't plan on actually purchasing the kit. I did my last truck ('01 S10 ZR2) myself and never bought the kit. I noticed a long time ago that they are a waste of money.

 

Yours looks very similar to mine from the outside. I dont have leather but I do have the Adventure Package with a 5 speed tranny. Love the manual in this car.