M4 for towing with a Hybrid, I know but...

Discussion in 'Hybrid General Discussion' started by 38JMD, Oct 6, 2019.

  1. 38JMD

    38JMD TYF Newbie

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    I understand the reason for towing in M4 only, but for the sake of asking: If I am towing 4200 lbs of boat on a flat 0% grade, could I then shift into D and take advantage of the overdrive? It sure doesn't seem like the truck is struggling on these flat Ohio freeways...

    2013 Yukon Denali Hybrid
     
  2. Marc Marc

    Marc Marc Member

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    I asked my dealer when I bought my 2013 Denali Hybrid this very question, and was told to keep it in drive. All my previous Yukons had the tow-haul button which I used religiously, but since the Hybrid didn't come with this I asked the question.

    I have 165K miles on mine now, and tow a Ranger Bass boat; with no transmission problems due to towing. Would be interested in the answers others offer on this.
     
  3. BG1988

    BG1988 Full Access Member

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    Don't do it you will Blow the CVT portion of the transmission towing 4200 pounds in D Avoid backing up as well with a trailer (esp backing up hills)

    you will destroy the transmission pretty quick... M4 is 4th gear 0.73 ratio


    the electrical motors will help you out in M4 :)
     
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  4. 38JMD

    38JMD TYF Newbie

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    Thanks for the advice. The reverse up a hill comment is rather concerning...
     
  5. BG1988

    BG1988 Full Access Member

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    it's a CVT on the reverse gear... that runs off the electrical motors and not the engine
     
  6. lt1gmc

    lt1gmc Member

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    FWIW I have towed a 5000 lb pontoon and trailer a few times a year for the last 4 years with my 09 Hybrid, always using Drive. Now at 199,000 miles and no trans problems.
     
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  7. rdstrattan

    rdstrattan TYF Newbie

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    I have a 2008 Tahoe Hybrid and I tow vintage cars & trucks on flatbed dual axle 7,000 lb trailer regularly. I use M4 when climbing or dropping down, but usually use D on flat land. Not high miles, about 130,000 now and maybe 20,000 towing. No problems so far.
     

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