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Old 08-25-2008, 06:44 PM   #15
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Quote:
Originally Posted by john hd View Post
as odd as it sounds the better package to order is the "snow plow prep package"

you get:

tranny cooler
engine oil cooler
oversized air cleaner
big radiator
165 amp alternator
2nd battery
and a extra circuit switched at the dash for a strobe light on the roof.

i think it was under 200 bucks when i got our silverado.

john
I kie the strobe light.

But what does it cost to install all of this.

Don
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Old 08-25-2008, 07:02 PM   #16
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Quote:
Originally Posted by john hd View Post
as odd as it sounds the better package to order is the "snow plow prep package"

you get:

tranny cooler
engine oil cooler
oversized air cleaner
big radiator
165 amp alternator
2nd battery
and a extra circuit switched at the dash for a strobe light on the roof.

i think it was under 200 bucks when i got our silverado.

john
John, Is your Silver a 1500?

I'll check at work tommorow, I don't know for sure if the plow pkg. is still available on the 1500's. We have had quite a lot of problems w/plows on the 1/2ton p/u.
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Old 08-25-2008, 07:14 PM   #17
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nope, 2000 2500HD.

no doubt plowing snow is the quickest way to destroy a perfectly good vehicle! my current plow truck is a 98 4x4 1500 ex cab with a 6.5 turbo diesel. (try finding one of those on a used lot!)

adonh, i think it would be very expensive as a add on. the time to get it is when you order a new truck.

i would just add the largest affordable oil cooler you can find.

i towed with a regular half ton chevy for years and did just fine.

you will be fine for 100 mile trip, just run it in 3rd and you won't overheat the tranny. (more rpms=more fluid transfer and cooling)

john
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Old 08-25-2008, 07:35 PM   #18
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[quote=john hd;608123]nope, 2000 2500HD.

i would just add the largest affordable oil cooler you can find

you will be fine for 100 mile trip, just run it in 3rd and you won't overheat the tranny. (more rpms=more fluid transfer and cooling)

john[/quote



What John said....stay out of drive, and install the best cooler you can talk the DW into
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Old 08-25-2008, 08:10 PM   #19
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Adonh, I just purchased a 08 Avalanche ( Same as your Suburban) and the dealer quoted a price of $350.00 plus labor for the GM Transmission cooler. The problem I have with using a B&M or equivalent product would be future warranty issues. Have you tried wiring your brake controller yet?
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Old 08-25-2008, 08:22 PM   #20
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Your truck's computer is pre-programmed to protect your transmission...In some respects, I dare you to overheat your transmission; I don't think the computer will allow it.
Tom... this sound like a truck for Cursh.
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Old 08-25-2008, 08:46 PM   #21
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Quote:
Originally Posted by dano View Post
Adonh, I just purchased a 08 Avalanche ( Same as your Suburban) and the dealer quoted a price of $350.00 plus labor for the GM Transmission cooler. The problem I have with using a B&M or equivalent product would be future warranty issues. Have you tried wiring your brake controller yet?

The only warranty issue you could have is if the cooler itself failed and or it could be proven that it was a faulty installation causing transmission failure. Dealer labor could be as much as 3.5+ hrs. Our shop is at $82.00/hr. plus fluid.
In 15yrs at GM store's I can count on three fingers the # of tranny coolers replaced. I'm well pleased with the factory unit on our 06. Last time out,fully loaded for camping we topped out at 16100#s, never went above 185*thru the Adirondacks.
It's a tough decision, especially on a 2008. Consider carefully.
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Old 08-25-2008, 09:17 PM   #22
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As I stated earlier GM part $91.00 and installation of part at Chevrolet dealer 1 hour labor. They intially told me they didnt know how much install would be, I then asked them to look up in the accessory catalog what the install time was suppose to be and it said 1 hour.
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Old 08-25-2008, 09:27 PM   #23
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With a 1/2 ton..

The other thing you will want to be sure to take care of with that 1/2 ton Burb is keeping the rear axle oil changed. On the corporate 1/2 rear axle you get a little ring/pinion that is really working it. I had a 99 several years ago and was shocked when I took the diff cover off, wow, it was like S-10 size.

I am not sure what rear end ratio you have, I had a 3.42 and it would barely pull my 3400 lb trailer through the Texas hill country and if I hit a slight headwind it was huntin' for gears.

Keep that oil changed too..
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Old 08-25-2008, 09:33 PM   #24
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As I stated earlier GM part $91.00 and installation of part at Chevrolet dealer 1 hour labor. They intially told me they didnt know how much install would be, I then asked them to look up in the accessory catalog what the install time was suppose to be and it said 1 hour.
I can check that out at work tommorow, I do not believe nor have I ever seen a GM tranny cooler accessory. The only ones I have experience with are factory replacements. There is a lot more work involved in installing one from scratch. The cooler lines alone are likely more than the $91.00 quoted above.

I'll run your VIN at work and see if there IS a cooler accessory for it, also what axle ratio is installed.
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Old 08-26-2008, 06:54 AM   #25
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dittos on the oil change for the rear end.

full synth oil is cheap insurance too.

john
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Old 08-26-2008, 07:16 AM   #26
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A couple of thing to point out. First, this vehicle should have tow/haul mode, which IMHO would not require towing in 3rd. Second, I fully agree that trans coolers typically don't fail. In the end anything you get would be better than you have now, be it a factory install or a 3rd party. I feel the B&M coolers are far better then the OEM that the factory (or dealer) installs. The problem with some 3rd party however is that if you want the steel lines rather than plain jane rubber hoses, it can be a challenge to get a cooler that not only fits perfectly using factory mounting and lines, but the connections can sometimes be a real PITA to figure out, which for the average joe on the street who may not have sufficient skill sets to take on a project like this, makes the factory cooler a pre-engineered, drop in option that may cost less to install.

Last point is about oil changes throughout the driveline. It is imperative IMHO that all fluids in the driveline be changed at regular intervals if most of the mileage placed on the tow vehicle is mostly under severe duty, of which towing is considered severe duty in the owner's manual and factory shop books.

Now I know GM has changed some of their differentials they've installed, but if you have the 8.5" gear size in back (I don't recall the number of bolts on the cover), keep in mind that GM at one point on these installed the Auburn limited slip. Even under non severe duty I think the fluid change is between 15k to 20k miles. I've changed mine roughly every 10k or less and I have the semi-floating axle (9.5" gear set on my 3/4 ton Suburban) which is a step up from the 8.5" differential. In some applications GM DOES NOT suggest putting synthetic in the rear differential of some of the 8.5" type units. Make sure that yours is able to have synthetic put in. My 8.5" (1/2 ton equiv) installed in my GM sedan clearly suggested synthetic oil not be installed in the differential on this vehicle. I did it anyway and got lots of differential groaning sounds, even with the additional GM friction modifier required in a number of 8.5" differentials.

On a somewhat related note, I find it a good idea to add deep pan transmission pans and extended capacity differential covers. Why? More fluid takes longer to flash heat. As an example, if you place two pots on the stove, one with 1 quart of oil and the other with 2 or 3 quarts of oil, which do you think heats faster? The one with less oil. Clearly regardless of capacity the oils will reach normal operating temps, though the one with more capacity will take slight longer, it's the flash heats from towing up a good grade, or similar where the flash heat would exceed normal operating temps.

Most everything said is is sage advice and you are on the smart path for considering a trans cooler at the very least. In the end the factory engineered mechanicals will meet or exceed most of what the average owner will throw at the vehicle, but remember, most manufacturers build them out to a point. What I mean by this is they will put in a $5 part that does the job just fine, but there are $10 parts that can do a better job and may be of better design and quality. To keep their prices competitive, you might not find B & M coolers in their trucks or metal matrix composite driveshafts. These items exceed the build and the engineering. Needed? Depends on the applicationa and the end user.

In the end, a cool trans and driveline is a happy trans and driveline.
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Old 08-26-2008, 08:46 AM   #27
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Adonh, I just purchased a 08 Avalanche ( Same as your Suburban) and the dealer quoted a price of $350.00 plus labor for the GM Transmission cooler. The problem I have with using a B&M or equivalent product would be future warranty issues. Have you tried wiring your brake controller yet?
Yes I reinstalled my Jordan Brake controller. Works just fine. But I first had to figure out how to complete the connections for the GM wiring harness. Look at the pdf document in my post to this thread

http://www.airforums.com/forums/f463...ler-44321.html

This provides step by step instructions with pictures. The other issue I had was the higher receiver on the 08 Suburban. This required a new 8'drop bar for the HA.

"First, this vehicle should have tow/haul mode, which IMHO would not require towing in 3rd."

Yes the 08 Suburban does have the tow/haul mode. So with this engaged I can tow in drive, not 3rd?

Thanks

Don
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Old 08-26-2008, 09:40 AM   #28
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If someone would care to call their local Chevrolet dealer parts dept and ask them too look up part #19171483, this whole topic could be resolved much quicker. And you wouldnt have to worry about any warranty issues.
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