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Transmission cooler missing…I know I know

Discussion in '2.5 Gen Tundras (2014-2021)' started by ColoradoCub, Sep 27, 2021.

Page 43 of 43
  1. Jan 3, 2022 at 12:25 PM
    #1261
    Terndrerrr

    #1261
    Terndrerrr guzzling dealer repellent

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    Yeti blocks less of the radiator, but their mounting bracket is more expensive.

    Don’t forget to spray it black with radiator paint. It would be pretty silly to see the word YETI or RTIC through your truck’s grille.

    How many gallons of trans fluid do you have to add for the RTIC?
     
    Terndrerrr, Jan 3, 2022
    #1261
    hagrid, Cpl_Punishment and Hightide[QUOTED] like this.
  2. Jan 3, 2022 at 12:30 PM
    #1262
    Hightide

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    Hightide SSEM #88 - 3MW - ASCM #2 RGBA#Q

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    Hightide, Jan 3, 2022
    #1262
    Clemsonman14, hagrid, Terndrerrr[QUOTED] and 2 others like this.
  3. Jan 3, 2022 at 12:32 PM
    #1263
    Cpl_Punishment

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    Cpl_Punishment Young men never die.

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    Cpl_Punishment, Jan 3, 2022
    #1263
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  4. Jan 3, 2022 at 1:14 PM
    #1264
    timsp8

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    timsp8 Former Tundra owner for 13 years

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    timsp8, Jan 3, 2022
    #1264
  5. Jan 3, 2022 at 1:26 PM
    #1265
    hagrid

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    hagrid The most diverse of Diversity Hires!

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    paynuss stretchers
    It all makes cents now.

    New years day there was a "boom" in my area. The NWS definitively ruled out thunder and there was no supersonic air traffic. A satellite that watches for lightning saw a flash over Washington county but it wasnt lightning.

    I can now say for certain that the boom was the OP's transmission.
     
    hagrid, Jan 3, 2022
    #1265
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  6. Jan 3, 2022 at 2:44 PM
    #1266
    sportbikenut

    #1266
    sportbikenut New Member

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    Nope! Jewish space lasers hitting large meteor, causing shower of particles covering the Pittsburgh region. Might have also mixed with the rain causing acid rain. Your motorcycles outside? Ha
     
    sportbikenut, Jan 3, 2022
    #1266
    hagrid[QUOTED] likes this.
  7. Jul 7, 2022 at 4:22 PM
    #1267
    Half track

    #1267
    Half track New Member

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    So tfl truck just had a 2nd test a new chev. severado 6.2 pulling 9,600. The first test towing trans. over temped at 285 degrees. 2nd test after so called repair was 255 degrees.
    I seen people on this web site say any thing past 220 degree is bad for your transmission. So is chev. overstating there towing rating?
     
    Half track, Jul 7, 2022
    #1267
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  8. Jul 7, 2022 at 5:18 PM
    #1268
    sportbikenut

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    sportbikenut New Member

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    Yep. My theory has always been that the domestic mfg's overstate towing capacity while super conservative Toyota understates capacity. Those temps above are too high.
     
    sportbikenut, Jul 7, 2022
    #1268
    Terndrerrr likes this.
  9. Jul 8, 2022 at 5:53 AM
    #1269
    blanchard7684

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    blanchard7684 New Member

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    Saw the same video.

    I'm curious to know what the dealer did to get 30 degrees out of it.

    I'm ok with 255 as long as there is a system to control it there.
     
    blanchard7684, Jul 8, 2022
    #1269
    Terndrerrr likes this.
  10. Jul 8, 2022 at 6:18 AM
    #1270
    14burrito

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    14burrito IG @14burrito

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    GM has a lower temp trans thermostat available on the 6L80, unsure about the 8 speed though...which I think is what is paired to that 6.2l. Possibly same part?

    It could be that the same, or close to the same,amount of heat was absorbed into the cooling circuit BUT the upper limited changed simply due to the floor starting lower.

    Original cooling floor was 180, the new tstat changes the floor to 135.

    Quick dig * 6 and 8 speed utilize the same thermostat. So there is your difference IMO.
     
    Last edited: Jul 9, 2022
    14burrito, Jul 8, 2022
    #1270
  11. Jul 8, 2022 at 6:31 AM
    #1271
    Mad Max

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    Mad Max New Member

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    Dont worry about trans temps in gm transmissions. Something else will destroy them long before the elastomers fail due to high heat. My buddies is in the shop right now with 50K miles getting a transmission, good thing is he slid right before the power train warranty expired. never towed anything....
     
    Mad Max, Jul 8, 2022
    #1271
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  12. Jul 8, 2022 at 6:59 AM
    #1272
    pursuit2550

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    pursuit2550 New Member

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    A guy at my job has a Escalade. The shop has had it more than him. And I am not joking. They supposedly fix it and a few days later it’s back in for about 4-6 weeks. It’s in right now as a matter of fact.
     
    pursuit2550, Jul 8, 2022
    #1272
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  13. Jul 8, 2022 at 7:07 AM
    #1273
    blanchard7684

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    blanchard7684 New Member

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    So a revised thermostat with lower opening temp?
     
    blanchard7684, Jul 8, 2022
    #1273
  14. Jul 8, 2022 at 7:22 AM
    #1274
    14burrito

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    14burrito IG @14burrito

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    Yes

    180 old floor
    135* new floor

    Big difference

    I *think* the full open specs are,
    196 old
    158 new

    Most GM owners bypass the trans thermostat all together (we did). You remove the cap, "flip the pill" and the thermostats been bypassed and fluid flows constantly.
     
    Last edited: Jul 9, 2022
    14burrito, Jul 8, 2022
    #1274
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  15. Jul 8, 2022 at 7:45 AM
    #1275
    blanchard7684

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    blanchard7684 New Member

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    good info. Thanks.
     
    blanchard7684, Jul 8, 2022
    #1275
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  16. Jul 8, 2022 at 7:55 AM
    #1276
    14burrito

    #1276
    14burrito IG @14burrito

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    If you (or anyone else) want a little more detail on it, the 6L80 TB is "21-NA-199". :cheers:
     
    14burrito, Jul 8, 2022
    #1276
  17. Jul 8, 2022 at 9:05 AM
    #1277
    Asimov2025

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    Asimov2025 Not Sure

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    Asimov2025, Jul 8, 2022
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  18. Jul 8, 2022 at 1:18 PM
    #1278
    eagleguy

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    eagleguy New Member

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    Anyone see the latest YouTube video where they test the 21 Tundra towing under adverse conditions to see if it really needs the trans cooler.
     
    eagleguy, Jul 8, 2022
    #1278
  19. Jul 8, 2022 at 2:03 PM
    #1279
    sportbikenut

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    sportbikenut New Member

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    Send the link or name to the one you are referencing. Thx.
     
    sportbikenut, Jul 8, 2022
    #1279
  20. Jul 8, 2022 at 3:06 PM
    #1280
    eagleguy

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    eagleguy New Member

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    Just go to You Tube and search for 21 Tundra Trans cooler. I don't have the link at the moment and I am not that tech savy. I think in the end the trans under load reached around 240 which Toyota stated (not me) was in the normal range.
     
    eagleguy, Jul 8, 2022
    #1280
  21. Jul 8, 2022 at 8:24 PM
    #1281
    AGSport

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    AGSport, Jul 8, 2022
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  22. Jul 8, 2022 at 8:38 PM
    #1282
    Mad Max

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    Mad Max New Member

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    Tundra transmission cooler discussion is like Covid it just never goes away.......
     
    Mad Max, Jul 8, 2022
    #1282
    Retired...finally and EDDO like this.
  23. Jul 8, 2022 at 8:42 PM
    #1283
    Joe333x

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    Joe333x Member

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    Joe333x, Jul 8, 2022
    #1283
    batman900, DZ_, sportbikenut and 2 others like this.
  24. Aug 19, 2022 at 7:48 AM
    #1284
    Spyker

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    Spyker I’m a dude,playin a dude,disguised as another dude

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    Is the Thermal Degradation PID available for the ScanGauge II?

    I looked on the website but couldn’t find it, and tried searching to no avail, TIA.
     
    Spyker, Aug 19, 2022
    #1284
  25. Aug 19, 2022 at 2:06 PM
    #1285
    Joe333x

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    Joe333x Member

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    I have it on my OBD MX+ but it's not really helpful since I've done multiple drain and fills and I'm guessing it needs to be reset by tech stream, which I have but have never really looked into it. Not exactly sure how it calculates it but have read about people asking the dealer to reset it after a service and they didnt even know how to.
     
    Joe333x, Aug 19, 2022
    #1285
    Spyker[QUOTED] likes this.
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