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Old 01-31-2012, 08:41 AM   #15
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I wonder if I have a transmission cooler? Is it easy to see? Where is it usually located? I have a 2007 Suburban 4WD.
So far 150F is the highest I have seen my gauge read.
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Old 01-31-2012, 09:03 AM   #16
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I wonder if I have a transmission cooler? Is it easy to see? Where is it usually located? I have a 2007 Suburban 4WD.
So far 150F is the highest I have seen my gauge read.
Yes...it will have an up-graded cooler with the towing package. KNP option code listed on the sticker on the inside of the glove box door.

Bob
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Old 02-01-2012, 08:52 AM   #17
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I do have a 6 speed transmission in Denalli package. Your comments are appreciated and insightful Andy. I know your well versed in hitch approaches. Is their a place I can confirm the transmissions between 1/2 and 3/4 ton vehicles for GM. Yesterday a transmission shop told me to add supplemental air bags and larger oil cooler to solve my towing capacity and tranny heating problems. Anyone have any experience with that solution? Frankly, I am worried about what a 3/4 ton truck will do to my 23 ft smaller airstream will I tow as I have been told the stiffer suspension will transfer all the road vibrations into the trailer and cause interior problems with the stress.
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Old 02-01-2012, 09:07 AM   #18
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". . . as I have been told the stiffer suspension will transfer all the road vibrations into the trailer and cause interior problems with the stress."

That is also indicated in your Airstream Owner's Manual, but there is a few on this forum that, based on their scientific experimentation and reasoning, you can ignore it.

You'll hear from them shortly.

doug k
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Old 02-01-2012, 09:13 AM   #19
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Things to Remember

Suburbans and Yukons changed significantly with the 2009 model year.
I found this out the hard way, I bought one.
This is my fourth 'Burban, a 1500, and it is built for luxurious road trips but not towing.
> Gone is the 3:73 differential replaced by something much higher.
> The 6 speed tranny puts a higher gear at the top end where it doesn't contribute to towing.

I can barely tow my utility trailers and certainly not my Airstream.
The transmission would be in 3d or 4th gear all the time and would soon cook itself.
That's why I bought the 2500HD Duramax with 6 Speed Allison
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Old 02-01-2012, 09:21 AM   #20
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Question

ashe

Be careful on the air-bag suspension "up-grade".

This is the correspondence I had regarding the Firestone system.


On Sep 7, 2011, at 12:34 PM, INFO @ SuspensionConnection wrote:

The Firestone air bags will increase your weight carrying capacity by
5000 pounds. I definitely recommend this system for your Burb:
Chevy Firestone Air Bags - 2000-2009 Chevy Suburban 2500 4x4 & 2wd - Firestone "Ride-Rite" Air Bag Helper Springs (Rear) by Firestone # 2253

Thanks

-----Original Message-----
From: Robert Crosse [mailto.......,,,,,..........com]
Sent: Sunday, September 04, 2011 10:59 AM
To: info@suspensionconnection.com
Subject: Airbag Chev Suburban

I am wondering how much more payload I will gain by adding rear bags to
my 06 3/4 Burb. Not sure of what the "level load capacity" of the Burb
is now.
I am concerned about overloading the axle as I tow an RV. How much would
I gain by upgrading the suspension with a quality air bag system.
Look forward to your recommendations.

Thank You,
Bob

Notice that the "exspurt" stated I could increase my payload too 10500lbs on a rear axle rated at 5500lbs.

Airbags will NOT increase the payload capacity, that is determined by the rating of the axle itself. They will only level the vehicle when loaded.....hence the vague term, "level load capacity". Still not sure exactly what that means.

Look at the driver door jam sticker for that rating.

Aux tranny cooler, never a bad idea. Installed aux cooler/filter on our 95 Burb, very good addition, the added capacity dropped op-temp several degrees.

Bob
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“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
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Sandra wanted to go to Cleveland on vacation,
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Old 02-01-2012, 09:28 AM   #21
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a larger 28 footer that could weigh 8000+ lbs loaded

Certified three-pad weight scale is your friend, and is basic homework. Look up the CAT Scale Locator and weigh the vehicles separately and together, empty (solo) and loaded for travel.

245F is too high, so question the "gauge" itself before committing to anything expensive (see SCANGAUGE).

On any auto trans I would prefer a downstream aftermarket stacked-plate cooler (B&W Racing; thermostatic bypass) with a filter also installed (the pan "filter" is little more than a screen).
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Old 02-01-2012, 12:45 PM   #22
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Quote:
Originally Posted by ROBERT CROSS View Post
Yes...it will have an up-graded cooler with the towing package. KNP option code listed on the sticker on the inside of the glove box door.

Bob
Beautiful. I checked the codes - bingo! Thanks Robert. One of these days I think I will copy all the codes and look them all up to see what I actually own!
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Old 02-01-2012, 02:04 PM   #23
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Quote:
Originally Posted by redwoodguy View Post
Beautiful. I checked the codes - bingo! Thanks Robert. One of these days I think I will copy all the codes and look them all up to see what I actually own!
RD

No problem...

You can ask your dealer to print out a GM VISS check for you to get the complete warranty service history, build sheet with all options.
You may even be able to get it online.

Vehicle Inquiry Service Summery

Bob
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“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
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Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
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Old 02-01-2012, 02:08 PM   #24
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Quote:
Originally Posted by redwoodguy View Post
Beautiful. I checked the codes - bingo! Thanks Robert. One of these days I think I will copy all the codes and look them all up to see what I actually own!
RD

No problem...

You can ask your dealer to print out a VISS check for you to get the complete warranty service history, build sheet with all options.
You may even be able to get it online.

Bob
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“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
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Sandra wanted to go to Cleveland on vacation,
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Old 02-04-2012, 06:59 AM   #25
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There are performance outfitters out there that add turbo's and supercharges to the 6.2 and have it turning out over 1000 HP so I don't think we are ever going to twist the block towing with one. All the 09's I have seen have had the 6 speed transmission. I did get confirmation that the 1/2 and 3/4 ton six speeds are identical.

Most of our customers with 6 speed transmissions have the 5.3 so there are no transmission heating issues at all. We traveled all through the hills in southern PA and northern west virgina this summer, my friend Blair tows his 34 with a 5.3 with the 6 speed and 3.08 gears, it was not as quick as the Mercedes diesel or the SHO but it certainly had no problem with the hills or temperature. Towing fuel economy has not changed much but he is picked up 5 MPG solo driving which is the majority of his use.
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Old 02-04-2012, 04:35 PM   #26
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Quote:
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There are performance outfitters out there that add turbo's and supercharges to the 6.2 and have it turning out over 1000 HP so I don't think we are ever going to twist the block towing with one. All the 09's I have seen have had the 6 speed transmission. I did get confirmation that the 1/2 and 3/4 ton six speeds are identical.

Most of our customers with 6 speed transmissions have the 5.3 so there are no transmission heating issues at all. We traveled all through the hills in southern PA and northern west virgina this summer, my friend Blair tows his 34 with a 5.3 with the 6 speed and 3.08 gears, it was not as quick as the Mercedes diesel or the SHO but it certainly had no problem with the hills or temperature. Towing fuel economy has not changed much but he is picked up 5 MPG solo driving which is the majority of his use.
OK, I guess the Brand Quality Manager for GM v8s is wrong. Never mind.
Unless the model identification number etched into the transmission case are IDENTICAL, they are not the same.

There are literally dozens of model/ID in each transmission SERIES designation (ie. 6L80E, 4T65E, etc....)
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Old 02-04-2012, 09:31 PM   #27
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Old 02-04-2012, 11:04 PM   #28
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I fitted a B&M 70274 SuperCooler to our F250 - big difference in oil temps. I can recommend this unit, along w/ an Autometer full-sweep gage to keep track of the temp.

- Bart
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