Towing Difference in 2008 and 2009 Silverado

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by sully428, Jul 7, 2009.

  1. sully428

    sully428 New Member


    New to the forum. I asked GM how the 2009 Silverado could haul 2000-3000lbs more than mine. I have the HD trailering package with extra transmission cooling too. Here it is below just as I received it, but its still not clear to me how it justifies a 3000 lb difference.

    I am sending you this message to provide additional information regarding your trailering inquiry.

    Based on our information, the 2008 Silverado that you own has a 4-speed auto transmission with a 3.42 axle that has a trailer rating of 6,600 lbs (the optional 3.73 axle ratio provided 7,600 lbs). For 2009, the 6-speed auto transmission replaced the 4-speed on crew cab models and this along with a new cooling package (K5L - forced on when a trailer hitch is ordered) is what provides the higher trailer rating. Only one axle ratio is provided with the 2009 5.3L (3.42) with 6-speed and it provides 9,600 lbs of trailering (with the K5L package).

    I hope that you find this information helpful to you. If you should need to contact us in the future, simply reply to this message or call our Chevrolet Customer Assistance Center at 1-800-222-1020. Customer Relationship Specialists are available Monday to Friday, 8:00 a.m. to 9:00 p.m. Eastern Time Zone.

    For more

    Again, thank you for contacting Chevrolet.


    The Chevrolet Consumer Support Team

    SR#: 71-735558962
  2. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Well, the 6L90 has a lower first gear to get things moving, and two more gears which allows it stay closer to the peak torque output of the motor. And they may have bumped up the power for 09.

    Plus there's some marketing influence at play to. They compete with the other two to provide "best in class" towing.
  3. sundancer2004

    sundancer2004 New Member

    rRegardless what chevrolet says, the 5.3 just does not have the power to tow what they claim. don't get me wrong, it will tow it on level terrain, but if you get in the mountainsI find I'm under powered. remember you have to also calculate in the weight of passengers, luggate, options of the trailer, ect. They can add more gears to the 2009, its still a 5.3.
  4. TRPLXL2

    TRPLXL2 Epic Member 5+ Years 1000 Posts

    I totally agree with sundancer2004, I have had both 5.3 and 6.0 motors in the same year truck and that 5.3 is sluggish no matter what you do to it within reason. Another thing is your gearing, I would think a 3.42 would be sloppy for towing. I think they are just trying to get you to go back in and trade your older truck, and buy a newer one from them so they can charge you more money. Although I have heard that the new 6 speed transmission is pretty sweet, good luck towing. :happy:
  5. 09sliverado

    09sliverado Member

    tomorrow i will hook up my 20ft 2300lb trailer and 4400lb jeep for a test run. i was gonna do it today then the rain came in and didnt stop. i figure my 6th gear will be useless, 5th and 4th are what im gunning towards. seeign as how my buddy with the 4.8L towed his scrambler with my trailer i think Ill be fine with the 5.3 6spd
  6. bob13

    bob13 Epic Member 5+ Years 1000 Posts

    Mountains aside, gearing can make all the difference in the world and the 373 is much better for towing. I'm not saying there isn't some marketing "spin" here but it for sure will be a better towing vehicle.
  7. 09sliverado

    09sliverado Member

    i agree with the 373 gears being much more suitable, the the dealer kept telling me cause of the 6spd auto and the 342 gears were much closer together. to be honest i keep 2nd guessing myself on my purchase, not that i could do anything about it now and knowing how well my titan did and it had 373 gears but it was a 5 spd w/OD
  8. Tdaz250

    Tdaz250 Rockstar 100 Posts

    I like the new 6 speed transmission. A buddy of mine has it on his 09 denali and he says he thinks it tows better then his 07 avalanche.
  9. tlperry68

    tlperry68 Epic Member 5+ Years 1000 Posts

    Agreed! A small block motor can only do so much. Once you get 8K pounds on a grade you'll feel it. If you are pullng that kind of weight you'll want the diesel. That comes with the 6 speed allison and I turn about 1700 rpm + / - at 65 mph and no prblems on the grades.
  10. larryleeUSN

    larryleeUSN Rockstar 100 Posts

    i tow a 18 foot car trailer with my 06 single cab with a 4.8 and i have never had a problem. towed everthing from the trailer loaded down with 4 wheelers to a Out fitted K-5 blazer( my mud truck) and never had a problem . the 4 speed aint to bad but im sure the 6 speed with be much better.

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