H3 My trans went out on my 3.7 07 H3, will any year 06-10 trans bolt up or???

[Jbrown]

I've searched for a week for this question and I can't seem to find a for sure answer.

It seems my trans has took a crap on me would only move in R,1, and 2. The fluid is burnt and smells horrible plus there's some pretty big chunks of stuff in the pan looks like clutch material either way I know it's not good :gaah:. Will all the transmissions from 06-10 work in my 07 or does it have to be an 06-07? I know the Colorado and Canyon trans will work too same question for those what years will work? I'm exploring all of my options, used, rebuilds, rebuilding it myself etc. etc. I don't wanna buy a used one from an 08-10 and it not work.

I see on ebay trannies are listed for 06-10 h3's but other sites list them as year specific. I don't figure a 2011 Colorado tran's will work either cause they are alot cheaper lol

 

[High Five H2]

i use car-part.com for their parts interchange, and according to them only 2007 will work. you might go to gmpartsdirect.com and see if the part number for your transmission is good for other years.

looks like colorado/canyon trannies from 07 will work, though.

 

[Jbrown]

Yup that's what I came up with but when you search on ebay they come up as 06-10 compatible. And of course I can't find a low mileage 07 tranny. Looks like gmpartsdirect is showing 07 as it's own transmission. But it has a separate trans for the 07 colorado wtf there's no way gm gave the 07 hummer it's own transmission lol.



Yup they are different the 08 and up control the trans through the TCM and the 06/07 trannies are controlled through the PCM from what I have read

 

[SedonaBound]

I wouldn't trust ebay for compatibility of off-year transmissions. If you're buying from a salvage yard, they'll be able to check it, and probably back up they're word on fitment, JIC. I'm guessing you could make most 4L60Es work in other GM chassis if you had to, but with swapping of major components; bell housings, shifter interface, control modules etc. You'd have to research your 07 and the candidate trans thoroughly.

 

[Jbrown]

Well I know not to trust a compatibility from Ebay lol that's why I'm asking on here. Salvage yards are almost as worthless as Ebay for compatibility especially for newer vehicles, and yes I've checked and the ones I've called they don't know. It'd be a real PITA to get a tranny that's an hour away get it home to find that it won't work then haul it back etc. etc.


Besides a rebuild it looking to be the most cost effective way to go. If I take the trans out myself and take it in I was quoted $1400 and some change for a rebuild with a 2 year warranty. These salvage yards are wanting 800-1200 bucks for lower mileage transmissions for 07's lower being 70-100,000 miles there's a few decently priced ones but they are 08+. Not any good deals on used H3 parts like there is for F-bodies that's for sure lol

 

[alrock]

There are differences between years, at least between 06 and 07. There's an extra sensor in the 07 that's not present in the 06, and you'll get codes with the wrong build. However, that sensor can be retrofitted into the 06 and thus make it compatible.

 

[f5moab]

Yup that's what I came up with but when you search on ebay they come up as 06-10 compatible. And of course I can't find a low mileage 07 tranny. Looks like gmpartsdirect is showing 07 as it's own transmission. But it has a separate trans for the 07 colorado wtf there's no way gm gave the 07 hummer it's own transmission lol.



Yup they are different the 08 and up control the trans through the TCM and the 06/07 trannies are controlled through the PCM from what I have read

Really? They gave it a different t/case, rear end, etc!

A part number difference could be something very small, such as a location of a sensor, slight different size in tail housing, etc. It does not mean that it won't bolt up and work on a different vehicle. You may never know the difference and/or not care what the difference is between the transmissions. It just means that GM decided that a particular part is different than another different part. Reason would be in the parts spec.

As for the 06/07 having the TCM contained in the PCM does not mean a difference in operation. Basically it means that the PCM (powertrain control module) included transmission controls internally, and then when the internal engineering battle within GM was done (long story), the modules were split off into two different units. This affects wiring more than trans internals.

My suggestion would be if you are going to keep the H3, get a raptor trans (or something equivalent) that will last basically forever. As for a 1400 rebuild, the price online for a factory rebuild is about 1850, see if you local dealer will sell it for the same price. Some will, some won't. I'm guessing at 1850, the dealer is still make a few hundred to do nothing but enter an order into the GM parts system and wait for delivery or have it dropped shipped at your house. A factory rebuild is as good as an original trans from my memory on warranty reports.

 

[SedonaBound]

Well I know not to trust a compatibility from Ebay lol that's why I'm asking on here. Salvage yards are almost as worthless as Ebay for compatibility especially for newer vehicles, and yes I've checked and the ones I've called they don't know.

Then why'd you even mention ebay's compatibility claims in two separate posts? If you're using used parts, you need to find a solid salvage yard that will back up their own fit recommendations. Salvage yards I've dealt with did that, even on parts they had shipped in from other yards. You're not going to easily find a low mileage trans from an eight year old low production model. Don't blame the salvage yard that "low mileage" might be now anything under 100k; an 07 model with avg miles may have 96K-120K miles. A good used trans for goes fast for top dollar.

 

[Jbrown]

Alrock- Thanks for the simple answer that I was looking for

f5moab- I didn't know they gave it anything different besides a motor that's why I'm on here asking so yeah REALLY!?!? And the reason I said the difference between the trans being controlled by the PCM for the 06/07 and by the TCM on the 08+ is you would have to change PCM settings if you did go with an 08+ trans and that's something I really didn't want to get into just to swap transmissions if it's even possible at all I've never heard of doing that nor have I ever had to do any PCM tuning like that with any of my vehicles. And my cars I have blown transmissions up in the transmissions worked from year to year which is why I figured these did too, can you see why I had a hard time believing GM would change a transmission from 06 to 07 and then again in 08. Besides I found a guy that will build it for me for 550 dollars so i'm probably going to go that route if I used the vehicle for offroad or racing or something yeah I'd beef it up, but it's a stock gutless 3.7 that gets driven back and forth to work so a stock rebuild will be just fine for it lol. If I ever were to have a trans built it would be from performabuilt like the one that's in my firebird.

Sedonabound- UMMMMMM I mentioned it cause lets see I was asking if they were the same transmissions or not and I mentioned it in one post not two. You see on ebay they put 06-10 right ok now that your still following I came on here to ask if they were all interchangeable to which I got your post that said not to trust compatibility from ebay WELL NO **** that's why i'm on here asking you get it now???? I mean a hummer site should beable to answer these questions. I wasn't blaming anyone for having 100k used transmissions I simply was stating low mileage 07 transmissions aren't at salvage yards like 08+ which is the whole reason I came on here was to ask if 08+ transmissions would work in an 07 in the first place. I mean it's not real hard to figure out is it? I know I know I shouldn't trust ebay compatibility I KNOW!!!! LOLOLOL and I would have never guessed low mileage stuff at junkyards go quick thanks for that little gem of knowledge.

 

[rsc]

There are differences between years, at least between 06 and 07. There's an extra sensor in the 07 that's not present in the 06, and you'll get codes with the wrong build. However, that sensor can be retrofitted into the 06 and thus make it compatible.

What sensor is that and does the transmission have to already be apart to get it to work?

 

[alrock]

I don't recall the sensor but Zach might know. The trans does have to be pulled so it could be a $800 charge to out in a $40 sensor if it was not present at the outset

Sent from my SM-N920V using Tapatalk

 

[rsc]

It would make a big difference between just pulling a transmission and pulling it apart if you bought the wrong year model transmission from a LKQ yard. I wonder if it's programmable to stop reading the sensor in the PCM?

 

[GreatDaneHummer]

I remember looking into a new trans for mine and found a few good performance places that made brand new stronger ones for same if not less money than a factory one. I will see if I have any notes on it. Take a look around before doing another factory one.

 

[alrock]

I remember looking into a new trans for mine and found a few good performance places that made brand new stronger ones for same if not less money than a factory one. I will see if I have any notes on it. Take a look around before doing another factory one.

If I had the option, I would have gone with a transmission from a performance shop. However, mine failed in Moab and going OEM was the best option at the time. But new OEM, if installed by GM, does come with a 100,000 mile warranty (and 5 years, I think)