Is the 6-speed auto in the '08-'09 H2 an Allison? - Pirate4x4.Com : 4x4 and Off-Road Forum

RgdL · 06-03-2009, 07:27 AM

Started looking at buying a used H2 and it seems the '08s and newer have quite a few upgrades compared to pre '08.

Just wondering if the 6-speed auto they're using behind the 6.2L is the same transmission they use behind the Duramax in the 3/4 and 1-ton pick-ups.

Bebe · 06-03-2009, 07:48 AM

Quote:

Originally Posted by RgdL

Started looking at buying a used H2 and it seems the '08s and newer have quite a few upgrades compared to pre '08.

Just wondering if the 6-speed auto they're using behind the 6.2L is the same transmission they use behind the Duramax in the 3/4 and 1-ton pick-ups.

No it's not an allison.

I believe it is the 4L80E.

BigKofJustice · 06-03-2009, 10:49 AM

Quote:

Originally Posted by Bebe

No it's not an allison.

I believe it is the 4L80E.

A 4L80E is 4 speed [hense the 4], it's a 6L80E.

Phily · 06-03-2009, 04:38 PM

Quote:

Originally Posted by RgdL

Started looking at buying a used H2 and it seems the '08s and newer have quite a few upgrades compared to pre '08.

Just wondering if the 6-speed auto they're using behind the 6.2L is the same transmission they use behind the Duramax in the 3/4 and 1-ton pick-ups.

Alpha H1's are the only Hummers that get Allisons. I don't think they are even making Alpha's anymore. 6L80 is what is in the new H2's still a very good transmission.

Black06 · 06-03-2009, 05:08 PM

If it is 6.2 powered then it is the 6L80E found in most 08-up trucks. great combination and very durable

Humminnboatin · 06-10-2009, 12:18 PM

Sure would be nice to get that 6L80E in my 03 H2. I like the paddle shifters too! Would make shifting on the trail much nicer than having to move the sledgehammer of a shifter on the center console. While it looks really great its no so much fun running through the gears on it.

ElJeepo79 · 09-29-2009, 03:01 PM

I believe its a 6l90e. The last of the heavy four speeds were 4l85e's before the six speed came out. cant see then dropping the gross vehicle weight rating on the newer bigger tranny...

06-03-2009, 07:27 AM	#1 (permalink)
RgdL Wheeler Join Date: Aug 2003 Member # 21766 Location: Winnipeg, Manitoba Posts: 433	Is the 6-speed auto in the '08-'09 H2 an Allison? Started looking at buying a used H2 and it seems the '08s and newer have quite a few upgrades compared to pre '08. Just wondering if the 6-speed auto they're using behind the 6.2L is the same transmission they use behind the Duramax in the 3/4 and 1-ton pick-ups.

06-03-2009, 05:08 PM	#5 (permalink)
Black06 Registered User Join Date: Jan 2008 Member # 106274 Posts: 160	If it is 6.2 powered then it is the 6L80E found in most 08-up trucks. great combination and very durable Last edited by Black06; 06-03-2009 at 05:09 PM.

09-29-2009, 03:01 PM	#7 (permalink)
ElJeepo79 Wheeler Join Date: Oct 2006 Member # 81042 Location: Phoenix, AZ Posts: 219	I believe its a 6l90e. The last of the heavy four speeds were 4l85e's before the six speed came out. cant see then dropping the gross vehicle weight rating on the newer bigger tranny... __________________ 1990 Toyota Pickup, 22RE 5spd, Total Chaos Caddy Kit

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06-10-2009, 12:18 PM	#6 (permalink)
Humminnboatin Registered User Join Date: Mar 2009 Member # 130870 Location: Mason, OH Posts: 33	Sure would be nice to get that 6L80E in my 03 H2. I like the paddle shifters too! Would make shifting on the trail much nicer than having to move the sledgehammer of a shifter on the center console. While it looks really great its no so much fun running through the gears on it.