Sandy Swede
06-29-2014, 03:23 PM
I knew that I was running abnormally high trans temps and tried a couple of things including installing a trans cooling pan and going to synthetic fluid. The improvement was marginal. On our current trip to Montana, I pulled into the Chevy dealer's service dept in Pipestone, MN. While discussing additional options (including an auxiliary trans cooler), one of the mechanics sauntered up and said, "I bet if you removed the after-market billet grill inserts, you would solve the problem. I pull a camper with my pickup and had to remove the grill inserts. Made a big difference as the inserts cut air flow by approx 50%."
You could have knocked me over with a feather.
Needless to say, I immediately had the after-market billet grill inserts removed. The grill inserts removed were horizontal chrome pieces; one in the upper section and one in the lower section (above and below the Chevrolet badge). Interesting how no one (including my own mechanic) had realized that the grill inserts would dramatically reduce air flow to the radiator. I also had an after-market auxiliary trans cooler installed on the theory that you can never have too low of a trans temp. Together, these actions have eliminated my high trans temp problem. I was running about 240 -250 degrees towing with a strong head wind or upgrade. A few times, I hit 275. I now run about 210 – 220. On the flatland, I currently run about 180: 190 if a hot day. Previously, I was running about 220.
Oh, the trials and tribulations of a newbie!
You could have knocked me over with a feather.
Needless to say, I immediately had the after-market billet grill inserts removed. The grill inserts removed were horizontal chrome pieces; one in the upper section and one in the lower section (above and below the Chevrolet badge). Interesting how no one (including my own mechanic) had realized that the grill inserts would dramatically reduce air flow to the radiator. I also had an after-market auxiliary trans cooler installed on the theory that you can never have too low of a trans temp. Together, these actions have eliminated my high trans temp problem. I was running about 240 -250 degrees towing with a strong head wind or upgrade. A few times, I hit 275. I now run about 210 – 220. On the flatland, I currently run about 180: 190 if a hot day. Previously, I was running about 220.
Oh, the trials and tribulations of a newbie!