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2020 GMC Sierra 2500 HD Denali Towing 2012 Airstream International Serenity 27fb

This build shows the 2020 GMC Sierra 2500 HD Denali (18,500 lb towing capacity) paired with the 2012 Airstream International Serenity 27fb (5,764 lbs dry weight). With 382 lbs of cargo, this combination is within the 80% safe towing guideline.

Three-Quarter Ton Pickup
2020 GMC
Sierra 2500 HD Denali
6.6L V8 · 4WD
Vehicle image
coming soon
2012 Airstream International Serenity 27fb
Travel Trailer
2012 Airstream
International Serenity 27fb
28' Length · Sleeps 5
Towing Capacity
18,500 lbs
Max Towing Capacity
6,469 lbs
Total Tow Weight (RV + Cargo)
12,031 lbs
Remaining Capacity
80% Safe
5,764 lbs
Tow Weight Breakdown
Total: 6,469 lbs
RV Dry Weight
5,764 lbs
Base trailer weight
Fresh Water
297 lbs
89% of 40 gal tank
Propane
26 lbs
61% capacity
RV Cargo
382 lbs
Gear inside trailer
Payload Capacity (Weight ON Truck)
Truck Capacity: 3,760 lbs
Using: 1,381 lbs
Tongue
Tongue Weight
770 lbs
Actual hitch weight
Passengers
360 lbs
2 people in truck
Truck Bed Cargo
251 lbs
Hitch equipment
Gear & Cargo
In Truck: 201 lbs In Trailer: 382 lbs
Fresh Water 89% (297 lbs)
Propane 61% (26 lbs)
In Trailer/RV 382 lbs
Toiletries 10 lbs
Extra Bedding 20 lbs
Towels & Linens 10 lbs
Bicycles ×3 90 lbs
Adds to tow weight
Estimated Fuel Economy
12
Solo MPG
10.1
Towing MPG
-16%
$34.65
Per 100 Miles
@ $3.50/gal

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Anonymous Apr 14, 2026 0 views

Vehicle Specs

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2020 GMC Sierra 2500 HD Denali

Max Towing 18,500 lbs
80% Guideline 14,800 lbs
Payload 3,760 lbs
MPG 12 combined
Engine 6.6L V8

RV Specs

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2012 Airstream International Serenity 27fb

Dry Weight 5,764 lbs
GVWR 7,600 lbs
Length 28'
Sleeps 5

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