I just bought a 2016 GMC 3500 dually. The truck weighs about 7000 lbs and my loaded AF 990 camper about 4800 lbs. The GVWR is 13025 lbs.
I specified on the "Declaration of Gross Vehicle Weight..." (form 4800) that I will operate under 10001 lbs (no fee). The dealer asked me to fill out this form.
I think this means that I can only legally haul about 3000 pounds of bricks but from my research below I can still haul my camper legally.
Here is a link to the relevant information on the DMV site. The
red highlighting is mine.
www.dmv.ca.gov-----
Vehicles NOT Affected
Light-weight trucks and vans, if the declared GVW or CGW is 10,000 lbs. or less.
Pickups with an unladen weight of 8,000 lbs. (even if the operating weight is over 10,000 lbs.) Taxis/rental limousines/charter-party carriers operating limousines if the declared GVW is 10,000 lbs. or less.
Park trailers/trailer coaches.
Weight fees for the above vehicles (except trailers) are based on the unladen weight.
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Weight fees for commercial vehicles (trucks/pickups) operating at a GVW of 10,000 lbs. or less are based on the unladen weight and number of axles.
When a camper (or shell) is temporarily attached to a motor vehicle designed to transport property (or the camper/area under it does not contain facilities designed for human habitation), the camper is a load and fees are based on the unladen weight of the vehicle without the camper.For registration fee information, see the Registration Related Fees (FFVR 34) Fast Facts brochure, available at,www.dmv.ca.gov/portal/dmv/detail/pubs/brochures/fast_facts/ffvr34/.
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Here's some information about the specific vehicle code:
www.leginfo.ca.gov-----
9400. Except as provided in Section 9400.1, and in addition to any
other registration fee, there shall be paid the fees set forth in
this section for the registration of any commercial motor vehicle
that operates with unladen weight.
Weight fees for pickup trucks are
calculated under this section. Whenever a camper is temporarily
attached to a motor vehicle designed to transport property, the motor
vehicle shall be subject to the fees imposed by this section. The
camper shall be deemed to be a load, and fees imposed by this section
upon the motor vehicle shall be based upon the unladen weight of the
motor vehicle, exclusive of the camper.-----