I just traded my 2007 H3 in for a 2005 H2. The price of the H2 was 22000.00 but orginally they wanted 29000.00. It was a Hummer Dealership with 88,000 miles.

I read an article in the NY Times a few years ago that said the H2 is designed to last 300,000 miles.

But I have to tell you, this trannie talk has just blew me out of the water. Never heard the talk before from anyone.

Where is Ralph Nader when you need him? HEHE!

GMC took over production from General starting in 2005 and I remember reading about some changes in the trannie but have no idea if they really apply here and it was too long ago to recall specfics.

The one conversation I had recently with a Hummer mech said he would only own a 20005-2007.

 

Guess I should be saving for a tranny since I'm at 90k...

 

2004 hummer H2-150K miles. At least half of the miles were in the Georgia & NC mountains. A lot of heavy trailer pulling miles including the mountains.
My tranny just went out and would not shift out of Second. After GM dealer diagnosis I am told repair would probably be more costly than a brand new GM transmission. Never any problems before and I guess I should feel lucky compared to the experience of owners posting their displeasure.
Considering how hard and long I have run my H2 I can honestly say I am not displeased by the service of this transmission, just sad that I have to spend $4,000.00 for a new one and wish it could have gone another 100K w/o replacing.
Jimmy

 

Was thinking about having my 03 tranny rebuilt for fear of roadside failure.
Seams I have been real fortunate to get this far on stock tranny. I have always run Amsoil ATF and changed every 30-50k thus maybe why she lived a longer life. And yes I tow everything from motorcycles to race car.


Cheers

 

Got mine at77000 miles. Now have 150000 miles. Changed trans fluid with synthetic only and filter every 30000 miles with no issues. You must keep up with the oil changes and don't forget the transfer case. SYNTHETIC. Know a friend who drove his transfer case into a pile of metal. No oil changes and probably went dry. They should last forever or close to it with synthetic Dextron.

 

Hey guys, old thread but i had to comment. I bought my H2 from the dealer in 2004 and put on every 275,000km and it's still going. Lots of boat and trailer towing, highway driving over mountain passes, and city driving too. Changed the tranny oil once several years ago and that's all there's been for maintenance. I was searching lifespan of these transmissions and was shocked to see them only lasting 100k miles (160k km)! I feel special

 

I have 280,000 on my H2 and the trans is now slipping and won't shift out of second. So what is the best option for this since I want to keep my truck. 1) Rebuild the stock trans, 2) Replace with another used trans 64K on it (one is available) or 3) Get a rebuilt? I tow a boat each summer but most of the driving miles are FWY to and from work. FYI I have never serviced the trans so I feel really fortunate that it went this long.

 

My trans lasted to 300K KM. It started slipping and wouldn't shift out of 2nd, like yours, so it won't be long before it goes...It got so bad one day that i barely got mine to the shop. I had it rebuilt with quality aftermarket parts and with a strong shift kit installed for $2500CDN total. I had it back in 2 days. I'm at 350K KM on the engine, so that is the next rebuild. i'm actually undecided on a rebuild or new.

 

Thanks for your reply, I got a quote yesterday for a Reman Trans and labor $2900 total. I am still debating buying a used trans for $1000 and doing it myself. I doens't seem to difficult, they told me it only takes a day to change out. Anybody tried to replace there transmission out there? I have done a few water pumps, starter, rear springs, shocks, fuel pump, plugs and brakes on the vehicle so I have some knowledge of whats there.

 

Update; at about 170K had to replace my tranny. I chose a 1400 USD rebuild from a local shop. Now at 240K it is still running strong. Although I have a pretty extensive preventative maintenance checklist. I still change my transmission oil regularly but I have heard that those with minimal maintenance trannys have a longer life due to the metal in the oil causing the frictions to grip better....