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Old 10-31-2010, 01:17 PM   #1 (permalink)
aquadisiac
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2006 Radiator Drain Plug (where is it?)

(...2006 Silverado. 6.6 Ltr. Duramax, 4x4)
I have the Dex-Cool Antifreeze and I decided to change my antifreeze since the vehicle is five years old now. I spent about an hour looking for The drain plug and I also used a flash light and then my hands to try to help locate it. I took the splash guard off underneath and couldn't find it. I don't seem to locate it in the Passenger side wheel well inside the inner fender. It doesn't appear to be on the driver's side. It isn't on the bottom or the back or the sides as far as I can tell. Am I over looking it? Probably. HELP Please.

Also, yesterday I changed my tranny spin-on filter and drained the fluid. The parts store assured me that I needed 8 to 10 Qts. of AC Delco VI transmission fluid as did a mechanic that works at a Chevy Dealership nearby. (that just happened to be in there) I asked them about Transynd Fluid and they both looked at me like I was talking in another language. The mechanic said he has been an ASE certified GM mechanic for over 30 years and he has never heard of the stuff, much less used it. He said AC Delco VI was as good as it gets. My trans. dip stick says "use AC Delco VI fluid only", as does one manual. I went to allisonstores.com and they said the VI fluid WAS NOT approved for use in the Allison. Now I am wondering if I have made a $100.00 mistake. Also Where do I find Transynd if I need to switch?
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2006 Chevrolet Silverado LT 4x4
2500 HD Crew Cab Short Bed
6.6 Liter Duramax LBZ Engine
48,400. Miles
K&N Air Filter
Super Chips Programmer on "Tow-Safe" Mode
AutoMeter Pryometer and Boost Guages on "A" Pillar
Big O Tires, Big Foot, Highway Tread Design
LT 245/75R16 M&S on Factory Polished Aluminum 6.5" Rims
It doesn't get to play in the snow or much rain.
No Off-Roading. Just driven on pretty days.
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Old 10-31-2010, 01:23 PM   #2 (permalink)
colt49
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It's so assuring to know who works at the dealers and parts joints etc. At least we can get good info here and a few other sites to know good basics and some tricks to fix. Got to wonder about the new era of wrenchhead.
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Old 10-31-2010, 02:12 PM   #3 (permalink)
teabagger2006
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there is no drain plug on lbz. you va to disconnect that huge lower radiator hose on the lower passenger side. you could get the transynd at detroit/allison dealet or some vendors on here stock it too
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Old 10-31-2010, 05:45 PM   #4 (permalink)
tuney443
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Quote:
Originally Posted by aquadisiac View Post
(...2006 Silverado. 6.6 Ltr. Duramax, 4x4)
I have the Dex-Cool Antifreeze and I decided to change my antifreeze since the vehicle is five years old now. I spent about an hour looking for The drain plug and I also used a flash light and then my hands to try to help locate it. I took the splash guard off underneath and couldn't find it. I don't seem to locate it in the Passenger side wheel well inside the inner fender. It doesn't appear to be on the driver's side. It isn't on the bottom or the back or the sides as far as I can tell. Am I over looking it? Probably. HELP Please.

Also, yesterday I changed my tranny spin-on filter and drained the fluid. The parts store assured me that I needed 8 to 10 Qts. of AC Delco VI transmission fluid as did a mechanic that works at a Chevy Dealership nearby. (that just happened to be in there) I asked them about Transynd Fluid and they both looked at me like I was talking in another language. The mechanic said he has been an ASE certified GM mechanic for over 30 years and he has never heard of the stuff, much less used it. He said AC Delco VI was as good as it gets. My trans. dip stick says "use AC Delco VI fluid only", as does one manual. I went to allisonstores.com and they said the VI fluid WAS NOT approved for use in the Allison. Now I am wondering if I have made a $100.00 mistake. Also Where do I find Transynd if I need to switch?
This is one of those strange times when you have 2 companies,one of which is owned by the other[or used to],yet each say something different as to the correct fluid to use.The truth of the matter is that either one will work,however the Transynd is by far superior.There are way too many variables for the Dexron VI to fully understand exactly what you are truly getting.If you're going to spend the additional money to changeout to Transynd,you really should flush out your old fluid using the ''hoot method'' described right here under Allison.You will need app. 4 gallons of Transynd,which can best be bought by getting a 5 gal. pail as previously mentioned at your Detroit/Allison dealer. I just paid $175 for mine.
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Old 10-31-2010, 05:58 PM   #5 (permalink)
aquadisiac
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tuney443 - Thanks friend. You're right. Too many variables. I guess I'll drive it a little while until I can afford to throw more money at the tranny. For sure I will go back with Transynd. I wish I had known of the superiority of the Transynd TWO days ago. I was just going to replace the spin-on, but it has 51,000 miles on it and I thought now or never!!! So I went with it!! Thanks for your input.
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2006 Chevrolet Silverado LT 4x4
2500 HD Crew Cab Short Bed
6.6 Liter Duramax LBZ Engine
48,400. Miles
K&N Air Filter
Super Chips Programmer on "Tow-Safe" Mode
AutoMeter Pryometer and Boost Guages on "A" Pillar
Big O Tires, Big Foot, Highway Tread Design
LT 245/75R16 M&S on Factory Polished Aluminum 6.5" Rims
It doesn't get to play in the snow or much rain.
No Off-Roading. Just driven on pretty days.
Westin Stainless Steel Nerf Bars
Vent Shade Window Vents
GM Hood Protector / Bug Shield
I Live in central Kentucky area, USA
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Old 11-01-2010, 09:17 PM   #6 (permalink)
TheJDMan
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There are several sources of Transynd. The key you are looking for is a TES295 certified oil. You can get it from Allison, John Deere, Moble and several others. Be advised that Amsoil ATF is NOT TES295 certified.
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Old 11-01-2010, 10:28 PM   #7 (permalink)
dinorex44
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If you want to make your life a little easier in the future, you can cut the small heater core return hose that plugs into the lower radiator hose and install a tee with a plug. Much easier and less messy to drain. As I recall, that hose is 5/8", and it is easy to get to after you pull the front skid plate.

Rather rediculous that GM didn't provide a drain plug IMHO.
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Old 11-01-2010, 11:14 PM   #8 (permalink)
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Transynd is by far a much superior product than DEX VI. Just look at the service intervals and its ability to handle extreme low temps or ofr that matter, extreme hi temps as well.!. Too bad the guys up north of me didnt have it in their trannys in the winter of 06/07 when a bunch of em blew up their TC's using DEX VI while on Hi-Idle...

DEX VI is GM's preferred product. why .? Because they make good margin on it thats why. Not because its the best thing since sliced cheese.

Theo
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Old 11-02-2010, 12:24 AM   #9 (permalink)
ElCaminoManT
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i did the same as you, looked all over under the truck trying to find the drain on the radiator with no luck. youll have to pull that huge lower hose from the radiator to drain the coolant. its messy as all get out.

i also drained the pan on the allison and re-filled with transynd. noticed an immediate improvement in shift quality and temperature control when towing. i messed up and went too long to 75K miles before changing the ATF, oops! i do change the spin on every 10K miles tho, the fluid looked like new when it came out. finding transynd here in so cal proved difficult a few months back, but i was able to find it at a heavy truck shop that services allisons in semis, busses and trash trucks. $40 per jug
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Old 11-02-2010, 04:53 AM   #10 (permalink)
aquadisiac
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Thanks men for all the useful" info!!! I do appreciate it.
__________________
2006 Chevrolet Silverado LT 4x4
2500 HD Crew Cab Short Bed
6.6 Liter Duramax LBZ Engine
48,400. Miles
K&N Air Filter
Super Chips Programmer on "Tow-Safe" Mode
AutoMeter Pryometer and Boost Guages on "A" Pillar
Big O Tires, Big Foot, Highway Tread Design
LT 245/75R16 M&S on Factory Polished Aluminum 6.5" Rims
It doesn't get to play in the snow or much rain.
No Off-Roading. Just driven on pretty days.
Westin Stainless Steel Nerf Bars
Vent Shade Window Vents
GM Hood Protector / Bug Shield
I Live in central Kentucky area, USA
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