Is fit on 2007 gmc 2500 hd?

I believe so, buy the additional radiator fitting. Also don’t like mounting to the condenser coil, made my own brackets.

I have a '04 chevy trailblazer 4.2 i6 4wd with factory trans cooler. looking to upgrade to pull travel trailer. is there anything else i need?

I would leave the factory trans cooler in place and add the Hayden trans cooler in line if at all possible, especially if the factory cooler is a plate and fin cooler. It will give you that much more extra cooling.

Did you bypass stock trans cooler on 4runner?

I did it on a Nissan Rogue s , am using both now , but planning on by pass it when I hit the 100 k miles ‘cause usual failure of stock oil cooler and don’t want to get any water in tranny. Hope it helps .

ASIN	B000C3BBKS
Best Sellers Rank	#111,634 in Automotive ( See Top 100 in Automotive ) #55 in Automotive Replacement Engine Cooler Accessories
Brand Name	Hayden Automotive
Connector Type	Hose Barb
Contact Material	Aluminum
Contact Type	Normally Open
Customer Reviews	4.8 out of 5 stars 1,496 Reviews
Global Trade Identification Number	00036752006793
Included Components	Transmission Cooler
Item Height	11.6 inches
Item Type Name	Transmission Cooler
Item Weight	2.8 Pounds
Manufacturer	Hayden Automotive
Mounting Type	Bracket Mount
Operation Mode	Automatic
UPC	036752006793
Warranty Description	1 year or 12K Miles

Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

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