Accurate info for the OP:
1997 Lance Squire is a nice TC and below are the specs as I have the 1997 Lance brochure and had also owned an ordered new 1997 Squire 4000 fully optioned out. I scale weighed the rig with and without the camper on a 1993 Chevy 2500 5.7 V-8 ext cab LB 4X4 truck loaded before a 13,137 mile trip to Alaska. The rig handled and rode excellent for the whole 128,000+ miles it was on the truck traveling all over the USA, Canada, and Alaska.
SPECS:
Floor length 8'-6"
Width 93"
Height inside 6'- 8-1/2"
Fresh water tank 33 Gallons
Gray Water tank 11 gallons
Black water tank 12 gallons
Propane 2 - 20lb tanks
Standard cabover (crosswise bed) dry weight w/o any options 2050 lbs
Extended cabover (front to back bed) dry weight w/o any options 2130 lbs
Add to weight for all options such as A/C (approx 80 lbs) etc.
With all options available for this 1997 Squire 3000 model including all liquid tanks full and 40 lbs propane: Add 634 lbs to the dry weight per the brochure.
Of course, you don't normally travel with the gray and black tanks full.
What you add in personal cargo (clothes, food, gear, etc varies too much to assign an accurate weight total).
The camper is short and the center of gravity is way ahead of the rear axle by more than a foot. It will be fine on your 2500 truck assuming the suspension, shocks, tires (max weight capacity and age), drivetrain, and the truck frame (mainly rust issues) are all in good shape. You can always add overloads of one type or another if needed for rear sag but they should be needed for the Lance Squire 3000.
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
Lance Legend TC 11' 4", loaded including 3400 PP generator and my deluxe 2' X 7' rear porch
29 ft Carriage Carri-lite 5'er - a specially built gem
A like new '07 Sunline Solaris 26' TT