Bypassing Factory Transmission Cooler on a 2003 Chevy Trailblazer LT 4.2 I-6
Updated 10/13/2020 | Published 10/09/2020
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Question:
I have had the internal cooler in the radiator crap out 2 times now. Will the external oil cooler be able to cool the transmission sufficiently without going through the internal radiator cooler? I would like to completely bypass the radiator with the external cooler.
asked by: Jack B
Expert Reply:
It is possible to bypass the factory transmission cooler on your 2003 Chevrolet TrailBlazer, but I would not recommend doing this with the Derale Series 8000 Plate-Fin Transmission Cooler # D13503. The cooler is a Class III cooler and as such, it's not quite big or efficient enough to function as a primary cooler.
I contacted Derale and they recommend the Derale 9000 Series # D33604. This is a Class V transmission cooler which provides more effective cooling and measures 10-1/8" wide x 11-7/8" tall x 1-1/4".
Product Page this Question was Asked From
Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient
- Transmission Coolers
- Plate-Fin Cooler
- Mid-Size Truck
- SUV
- Van
- Standard Mount
- 11W x 8-3/4T x 7/8D Inch
- With 11/32 Inch Hose Barb Inlets
- Derale
more information >
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