Adding Factory trans oil cooler to trucks that never had it.
Parts:
Cooler (1): 15990593 - Amazon
Cooler Line (1): 15982923 - RockAuto
Cooler Line (1): 15990062 - RockAuto
Cooler Quick Connect: GM 15718023 - Amazon
Nylon Hose Clip (2): 15738800 - eBay
Bracket, Lower (1): 15974696 - eBay
Bracket, Upper (1): ?????? - eBay
M6 "J-Nut" (4) - Local Hardware Store
M6 x 1" Body Bolt (8) - Local Hardware Store
My '90 has never had a factor aux trans cooler. Just the radiator inset, so wanted to keep my original 4L60 a little cooler. I dont really like the look of aftermarket coolers with rubber hose or soft lines running around, so thought I would retrofit an OEM version. All parts are freely available online (RockAuto, eBay, Amazon) EXCEPT for the upper cooler bracket. I don't know if my Google-foo is lacking or what, but I could not find a part number for this bracket. The stubby version (15968707) is available new for cheap, but in order to use this OEM cooler, you'll need the long-length bracket. This bracket took me a while to track down and I ended up having to PM an eBay seller to see if they could pull it off a parts truck they had listed. The one I received had some surface rust, so I wire brushed and painted it. Turned out nice enough. A parts yard is your best bet for this bracket I'm guessing. Another wonky thing is that the cooler lines dont fit into the quick connects that come on the cooler. If you use this parts list, you'll need to swap out the fittings that come on part number 15990593 for the quick connect fittings listed above. This is likely because I had multiple model years of parts, but I did use GM websites to get parts for a '94, so don't know what happened here. It all worked out in the end though. Once you get the parts, install was quick. Remove the parking lights, remove grill, remove the upper transmission cooler line at the radiator and upper transmission port. Install the bracket and cooler with the M6 body bolts, cut the old line in pieces to aid removal and feed the new lines in from the front. Start and run, fix the leak, add about 2 quarts of Dexron and enjoy. Temp difference? No idea, but likely cooler than without.
Parts:
Cooler (1): 15990593 - Amazon
Cooler Line (1): 15982923 - RockAuto
Cooler Line (1): 15990062 - RockAuto
Cooler Quick Connect: GM 15718023 - Amazon
Nylon Hose Clip (2): 15738800 - eBay
Bracket, Lower (1): 15974696 - eBay
Bracket, Upper (1): ?????? - eBay
M6 "J-Nut" (4) - Local Hardware Store
M6 x 1" Body Bolt (8) - Local Hardware Store
My '90 has never had a factor aux trans cooler. Just the radiator inset, so wanted to keep my original 4L60 a little cooler. I dont really like the look of aftermarket coolers with rubber hose or soft lines running around, so thought I would retrofit an OEM version. All parts are freely available online (RockAuto, eBay, Amazon) EXCEPT for the upper cooler bracket. I don't know if my Google-foo is lacking or what, but I could not find a part number for this bracket. The stubby version (15968707) is available new for cheap, but in order to use this OEM cooler, you'll need the long-length bracket. This bracket took me a while to track down and I ended up having to PM an eBay seller to see if they could pull it off a parts truck they had listed. The one I received had some surface rust, so I wire brushed and painted it. Turned out nice enough. A parts yard is your best bet for this bracket I'm guessing. Another wonky thing is that the cooler lines dont fit into the quick connects that come on the cooler. If you use this parts list, you'll need to swap out the fittings that come on part number 15990593 for the quick connect fittings listed above. This is likely because I had multiple model years of parts, but I did use GM websites to get parts for a '94, so don't know what happened here. It all worked out in the end though. Once you get the parts, install was quick. Remove the parking lights, remove grill, remove the upper transmission cooler line at the radiator and upper transmission port. Install the bracket and cooler with the M6 body bolts, cut the old line in pieces to aid removal and feed the new lines in from the front. Start and run, fix the leak, add about 2 quarts of Dexron and enjoy. Temp difference? No idea, but likely cooler than without.
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