Factory trans cooler upgrade - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**cst204x4** · 12-22-2018, 01:59 PM

Just replaced my factory trans cooler on my 2004 2500 HD with gm part number 89022577 . It’s twice the size and twice as thick. This replacement cooler was factory on 98 Chevy 3500 with 454 I just cut brackets off a old cooler and made them fit new cooler. I had about 45 mins into it the factory lines plug right in!

**cst204x4** · 12-22-2018, 02:01 PM

Part #

mikebte · 12-22-2018, 08:16 PM

I have that same cooler sitting around that I never installed on my old GMC. I was wondering if it would fit, any fittings needed?

**cst204x4** · 12-22-2018, 11:03 PM

No fittings needed factory lines snap right in

**hatzie** · 12-24-2018, 09:05 PM

The factory AUX coolers for the T800 and T900 are tiny.

That T400 cooler is about the size of a Tru Cool 22,000 lb cooler. That's a big improvement over the stock cooler.

There's a vendor on performance trucks that sells a kit to mount the Tru Cool 47391 40,000 lb cooler on the T800 but you have to cut one of the lines and rotate it 180°. https://www.performancetrucks.net/fo...rdware-508374/

You can buy the JiffyTite push-lok fittings, that GM used on the factory transmission cooler, that screw into the threaded fittings on some of the Tru Cool units like the 47391. If the GM hoses become obsolete it's not a big deal to make them in steel tube with a Mastercool Hydraflare tool. That's what I did to make up a leak free TruCool unit on my Impala.

mikebte · 12-26-2018, 10:26 AM

Very cool info ether way. I always used the link below as a reference and have not gotten around to completing the mod.

Looking at yours I dont think I need the fitting recommended.

http://168.144.127.175/1996%20Tahoe/...%20Upgrade.htm

**cst204x4** · 12-27-2018, 09:36 AM

The gm cooler I used is made by long I believe they are the same company the makes the B&M coolers

**hatzie** · 12-27-2018, 02:55 PM

I've read that Long makes some of the GM, Tru Cool, and Hayden coolers.
It wouldn't be shocking to find that B&M buys some of theirs from Long as well.

Long makes some pretty decent low pressure drop plate oil coolers.

95 S_Trucker · 12-29-2018, 07:39 AM

Can someone measure the rough size(in inches) of the upgraded cooler? Thanks!

**cst204x4** · 12-29-2018, 11:43 AM

11W. 9 inches tall and 1and1/2 thick

**cst204x4** · 12-29-2018, 12:53 PM

11W. 9 inches tall and 1and1/2 thick

95 S_Trucker · 12-29-2018, 02:53 PM

Thanks! That's the same size cooler my 99 has. I'll have to order one for the 2011.

95 S_Trucker · 12-29-2018, 05:39 PM

I went out and measured my 2011, Its 24 inches wide and 3.5 inches tall.

Surface area is 84 square inches

Surface area of the upgrade in this thread is 99 square inches

sleepertruck72 · 02-17-2019, 11:21 PM

Great info here !

12-22-2018, 01:59 PM	#1
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Factory trans cooler upgrade Just replaced my factory trans cooler on my 2004 2500 HD with gm part number 89022577 . It’s twice the size and twice as thick. This replacement cooler was factory on 98 Chevy 3500 with 454 I just cut brackets off a old cooler and made them fit new cooler. I had about 45 mins into it the factory lines plug right in! Attached Images __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-22-2018, 02:01 PM	#2
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Re: Factory trans cooler upgrade Part # Attached Images __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-22-2018, 08:16 PM	#3
mikebte Registered User Join Date: Oct 2011 Location: Tucson, AZ Posts: 639	Re: Factory trans cooler upgrade I have that same cooler sitting around that I never installed on my old GMC. I was wondering if it would fit, any fittings needed? __________________ 1959 Chevy Apache 3100/ 283 TBI / 4L60E My YouTube: https://www.youtube.com/mikebtte

12-22-2018, 11:03 PM	#4
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Re: Factory trans cooler upgrade No fittings needed factory lines snap right in __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-24-2018, 09:05 PM	#5
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Factory trans cooler upgrade The factory AUX coolers for the T800 and T900 are tiny. That T400 cooler is about the size of a Tru Cool 22,000 lb cooler. That's a big improvement over the stock cooler. There's a vendor on performance trucks that sells a kit to mount the Tru Cool 47391 40,000 lb cooler on the T800 but you have to cut one of the lines and rotate it 180°. https://www.performancetrucks.net/fo...rdware-508374/ You can buy the JiffyTite push-lok fittings, that GM used on the factory transmission cooler, that screw into the threaded fittings on some of the Tru Cool units like the 47391. If the GM hoses become obsolete it's not a big deal to make them in steel tube with a Mastercool Hydraflare tool. That's what I did to make up a leak free TruCool unit on my Impala. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 12-26-2018 at 12:40 AM.

12-26-2018, 10:26 AM	#6
mikebte Registered User Join Date: Oct 2011 Location: Tucson, AZ Posts: 639	Re: Factory trans cooler upgrade Very cool info ether way. I always used the link below as a reference and have not gotten around to completing the mod. Looking at yours I dont think I need the fitting recommended. http://168.144.127.175/1996%20Tahoe/...%20Upgrade.htm Attached Images __________________ 1959 Chevy Apache 3100/ 283 TBI / 4L60E My YouTube: https://www.youtube.com/mikebtte

12-27-2018, 09:36 AM	#7
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Re: Factory trans cooler upgrade The gm cooler I used is made by long I believe they are the same company the makes the B&M coolers __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-27-2018, 02:55 PM	#8
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Factory trans cooler upgrade I've read that Long makes some of the GM, Tru Cool, and Hayden coolers. It wouldn't be shocking to find that B&M buys some of theirs from Long as well. Long makes some pretty decent low pressure drop plate oil coolers. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

12-29-2018, 07:39 AM	#9
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: Factory trans cooler upgrade Can someone measure the rough size(in inches) of the upgraded cooler? Thanks!

12-29-2018, 11:43 AM	#10
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Re: Factory trans cooler upgrade 11W. 9 inches tall and 1and1/2 thick __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-29-2018, 12:53 PM	#11
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,006	Re: Factory trans cooler upgrade 11W. 9 inches tall and 1and1/2 thick __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

12-29-2018, 02:53 PM	#12
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: Factory trans cooler upgrade Thanks! That's the same size cooler my 99 has. I'll have to order one for the 2011.

12-29-2018, 05:39 PM	#13
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: Factory trans cooler upgrade I went out and measured my 2011, Its 24 inches wide and 3.5 inches tall. Surface area is 84 square inches Surface area of the upgrade in this thread is 99 square inches

02-17-2019, 11:21 PM	#14
sleepertruck72 Registered User Join Date: Nov 2007 Location: Turlock California 95380 Posts: 2,075	Re: Factory trans cooler upgrade Great info here ! __________________ 72 C20 Longbed 05 1500 Z71



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