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05-10-2021, 07:51 AM
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#1
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Montana Master
Join Date: Jan 2007
Location: Lobelville
Posts: 2,128
M.O.C. #6650
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Towing weights for GM HD Trucks.
Information for those who are looking at GM HD Trucks.
SIERRA 2500 HEAVY DUTY†
Maximum conventional trailering capacity of up to 18,500 lbs† (As Shown 14,500 lbs†)
Maximum fifth-wheel/gooseneck rating of up to 18,510 lbs† (As shown 16,620 lbs†)
Maximum payload of up to 3,979 lbs† (As shown 3,760 lbs†)
2021 GMC Sierra 3500HD SLT in Quicksilver Metallic
SIERRA 3500 HEAVY DUTY†
Maximum conventional trailering capacity of up to 36,000 lbs† (As shown 20,000 lbs†)
Maximum fifth-wheel/gooseneck rating of up to 35,500 lbs† (As Shown 21,300 lbs†)
Maximum payload of up to 7,442 lbs† (As Shown 4,185 lbs†)
Good luck on your choice of Trucks.
Happy Trails.
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05-10-2021, 10:14 AM
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#2
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,256
M.O.C. #26190
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And there are so many variables in between those.....regular cab, double cab, crew cab, 2WD, 4WD, , short bed, long bed, dually, SRW, 18" or 20" wheels, diesel, gas.
__________________
2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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05-10-2021, 04:13 PM
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#3
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Montana Master
Join Date: Jan 2007
Location: Lobelville
Posts: 2,128
M.O.C. #6650
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True many variables. I just purchased a 2021 GMC SLT, 2500HD, Crew cab, 4x4. I'm very satisfied with my choice. This is our 4th 2500 HD, we have also had 5 3500HDs dually, never owned a 3500 SRW. Everyone has a choice. Do the research.
Happy Trails.
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05-10-2021, 05:00 PM
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#4
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Established Member
Join Date: May 2020
Location: Whiting
Posts: 41
M.O.C. #26212
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I heard a rumor that the new Chevy trucks are programmed from the factory to only put out 7 volts to the trailer which doesn’t do to much for charging the trailer battery. Don’t know if this is true or not. Has anyone else heard this?
__________________
2020 Montana 3791RD
2017 F350 CC Dually
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05-10-2021, 05:21 PM
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#5
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,166
M.O.C. #6433
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The rated payload capacity is more likely the limiting factor than the listed towing weight. Payload rating can vary significantly depending on cab, bed length, engine, 4x4 vs 4x2, etc. Gotta look at those ratings for any truck of interest.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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05-10-2021, 10:21 PM
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#6
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Montana Master
Join Date: Jun 2018
Location: Carson City
Posts: 2,017
M.O.C. #21963
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If anyone is looking for a truck to tow with thinking these numbers are accurate will likely leave them disappointed. There is more to the equation than advertised best case scenarios.
__________________
2016 3160, Legacy, Sailuns, Splendide 2100 xc vented, 1 1/2" axle lift blocks, disk brakes. 2014 Ram 3500 SRW SWB 4X4 6.7 Aisin Mega Cab, EBC slotted disks and brakes, Titan fuel tank.
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05-13-2021, 05:56 PM
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#7
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Montana Master
Join Date: May 2006
Location:
Posts: 1,700
M.O.C. #5751
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Quote:
Originally Posted by BB_TX
The rated payload capacity is more likely the limiting factor than the listed towing weight. Payload rating can vary significantly depending on cab, bed length, engine, 4x4 vs 4x2, etc. Gotta look at those ratings for any truck of interest.
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True. Often tow rating is irrelevant it's the payload that is the limiting factor. That's what puts so many 250/2500 trucks over weight...they can't carry the pin weight and stay within limits.
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05-16-2021, 01:14 PM
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#8
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New Member
Join Date: Sep 2020
Location: Redding
Posts: 5
M.O.C. #27082
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Quote:
Originally Posted by PhilC
I heard a rumor that the new Chevy trucks are programmed from the factory to only put out 7 volts to the trailer which doesn’t do to much for charging the trailer battery. Don’t know if this is true or not. Has anyone else heard this?
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I just bought a new 2021 GMC Denali w/duramax. My Furrion cameras that worked on my 2018 GMC do not work with the new truck. from what I understand, GMC regulated the voltage to the running light, that is why my cameras don't work.
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05-16-2021, 03:47 PM
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#9
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Seasoned Camper
Join Date: Dec 2019
Location: Dryden
Posts: 92
M.O.C. #25471
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Quote:
Originally Posted by David Van Denover
I just bought a new 2021 GMC Denali w/duramax. My Furrion cameras that worked on my 2018 GMC do not work with the new truck. from what I understand, GMC regulated the voltage to the running light, that is why my cameras don't work.
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Wouldn't that be an issue for just normal trailer lights? I wouldn't think LEDs would light at too low a voltage - someone else mentioned 7 volts. Seems like incandescent would barely glow at that voltage.
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05-16-2021, 04:15 PM
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#10
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Montana Fan
Join Date: May 2019
Location: Mesa
Posts: 131
M.O.C. #24052
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Quote:
Originally Posted by pitman44
Wouldn't that be an issue for just normal trailer lights? I wouldn't think LEDs would light at too low a voltage - someone else mentioned 7 volts. Seems like incandescent would barely glow at that voltage.
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On my 2020 GMC 3500 I have to turn the lights auto on off for my camera to work..... Something you might try
__________________
Rod & BJ
2019 3811MS , 2020 GMC 3500 Dually Denali Duramax, Anderson hitch.
Mesa, AZ
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