Bypassing Factory Transmission Cooler on a 2003 Chevy Trailblazer LT 4.2 I-6
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".
Products Referenced in This Question
Derale Series 9000 Plate-Fin Transmission Cooler w/ NPT Inlets - Class V
- Transmission Coolers
- Plate-Fin Cooler
- Heavy-Duty Truck
- Standard Mount
- 10-1/8W x 11-7/8T x 1-1/4D Inch
- With 1/2 Inch NPT
- Derale
more information >
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 >
Featured Help Information
Instructions
Continue Researching
- Shop: Derale Series 9000 Plate-Fin Transmission Cooler w/ NPT Inlets - Class V
- Shop: Transmission Cooler
- Shop: Derale Snap-In Radiator Adapter Fitting for GM
- Shop: Derale Series 9000 Plate-Fin Transmission Cooler Kit w/ NPT Inlets - Class V - Extra Efficient
- Video: Derale Series 9000 Plate-Fin Transmission Cooler Kit Review
- Video: Derale Transmission Coolers - Plate-Fin Cooler - D13614 Review
- Shop: Derale High-Temperature Replacement Hose for Transmission - 11/32" Inner Diameter - 4' Long
- Shop: Derale Universal Bendable Metal Mount Kit
- Shop: Derale Radiator Adapter Fittings for GM
- Shop: Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class III - Efficient
- Q&A: Transmission Cooler Recommendations for a 2003 Chevy Trailblazer
- Search Results: derale transmission coolers
- Q&A: Transmission Cooler Recommendation for a 2012 Nissan Titan 4x4
- Video: Derale Snap In Radiator Adapter Fitting Installation
- Video: Review of Derale Transmission Coolers - Plate-Fin Cooler - D33604
- Q&A: Transmission Cooler Kit for a 2018 Ram 3500 Dually w/ the 6.7 Cummins Turbo Diesel Engine
- Video: Derale Series 8000 Transmission Cooler Review
- Search Results: 25580
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: spindle washer
- Shop: Trailer Wiring
- Video: Choosing the Right Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: Replacement Tarp for Truxedo Lo Pro that Fits 2013 Chevy Silverado 3500 Long Bed
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Suspension Enhancement
- Search Results: transmission coolers
on Transmission Coolers
