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  1. #11
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    mfleetwood's Avatar
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    Jul 2010
    Location
    Denver, CO
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    7,213
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    Default

    Here's another thread w/lots of great info...thanks to @99'HEARTBEAT !

    http://www.gmtruckclub.com/forum/sho...mission-Cooler


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    TIRES:
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

  2. #12
    Sr. Mechanic
    Join Date
    Oct 2011
    Location
    Salt Lake City, UT
    Posts
    151

    Default

    Apparently-the B&M #70266 bolts right in with the adapters w/o cutting any lines what so ever.

  3. #13
    Former Member
    Join Date
    Apr 2012
    Location
    Reading, PA
    Posts
    291

    Default

    The only downfall to running a cooler is it may cause extended shifting weirdness in cold temperatures until the trans warms up.

    I've got a cheap small cooler on my Subaru Outback because I sit in heavy traffic every day...used off-the-roll generic tranny hose from the local parts house, have not had an issue in over 70k miles. I only added it because I already had the radiator out, and it was an easy addition (in other words: I don't know if it was even needed; it was simply a good time to install one).

  4. Likes Steve liked this post
  5. #14

    Default

    If you're worried about blowing lines, B&M makes coolers with 1/2" fittings that you can buy some braided stainless flex hoses and use so you eliminate the possibility of a hose popping off, but based of so many people that have aftermarket coolers that haven't has a issue you should be fine.

    Also make sure you still go through the factory radiator cooler because in cold weather it helps bring the tranny up to temp.
    @Steve since you have a Traverse that has a Transaxle(axle that is part of the tranny) cooling is very important for you especially because you live in Texas! B&M is considered one of the best mfg of coolers in the US because they don't use tube and fin coolers they use only stacked plate coolers which are more efficient and much more durable. The Trucool is a stacked plate cooler as well.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

    Check out my other mods in My Garage: http://www.gmtruckclub.com/forum/sho...t-Tahoe-4-Door

  6. #15

    Default

    Ive been running Aeroquip Pushlok hose for about 7 years now and its some good stuff but expensive. worth it!
    -Jonathan
    2000 ECSB Silverado 2WD
    LQ4 with Isky 215 Turbo Cam
    4L80E KB Racing S475 Turbo Kit

  7. #16

    Default

    Im also running a 40k true cooler. I live in arizona 115 HEAT i have a fully built truck and a 3000 stall, pulling a 18ft boat it the mountians and in the heat i never hit 190 with the 4l60 or the 4l80. Ive had mine for over 2 years and and i abuse it pretty bad and havent had one issue yet.

  8. #17

    Default

    Also if your trans temp is heating up when the torque converter is locked, you have other issues to be worrying about.

    Mine can be 150* goin thru town and soon as i get on the highway or interstate and get the TC locked, the temps go down fast. 90* day they run about 120-125*.

  9. #18

    Default

    Quote Originally Posted by steved View Post
    The only downfall to running a cooler is it may cause extended shifting weirdness in cold temperatures until the trans warms up.

    I've got a cheap small cooler on my Subaru Outback because I sit in heavy traffic every day...used off-the-roll generic tranny hose from the local parts house, have not had an issue in over 70k miles. I only added it because I already had the radiator out, and it was an easy addition (in other words: I don't know if it was even needed; it was simply a good time to install one).
    That's good feedback.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  10. #19
    Sr. Mechanic
    Join Date
    Oct 2011
    Location
    Salt Lake City, UT
    Posts
    151

    Default

    OK-here is real life. As some of you know I am pulling a 29foot-5,500 pound travel trailer around the country with my 2011-5.3 Silverado 1/2 ton. It's completely stock. We are currently coming towards the end of the trip. I pulled from the Mount Rushmore area to a small town called Glendo, WY. We went over several 5,000 to 7,000 mountain passes. The ambient temp was 80 degrees. The transmission temp. was 195 except slowing down over the passes saw 210. It seems it cools down once you start to descend.

    I am getting the B&M 70266 transmission cooler. It's about double the size of the OEM. So my real world experience tells me it will provide enough margin AND it bolts up without cutting the lines.

    In seven months we have traveled 17,000miles. The total towing miles have been 6,500 with about another 600 to go before we reach home.

  11. #20

    Default

    Let's keep the conversation going!

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