Tires: tire pressure, box hd, gmc sierra

Question
I have a 200 GMC sierra 2500 There is no placard on the door and none in the glove box nor the gas cap or any where else.the tires are 245/75 r16. can you tell me what the psi should be?  thanks

Answer
Larry,

According to Tire Guides, a publication that summarizes vehicle tire placards, a 2000 GMC Sierra 2500 came in a variety of modelss and with a variety of tire sizes and inflation pressures.  But perhaps I can narrow this down enough to be helpful.

a)  C2500 (2WD) Regular Cab, Long Box came with LT245/75R16, 45 psi front and rear

b)  C2500 (2WD)Extended Cab, Lomg Box HD - LT245/75R16, 65 psi front, 80 rear

c)  C2500 (2WD) Extended Cab, Short Box - LT245/75R16 45 psi front and rear

d)  C2500 (2WD) Regular Cab, long Box HD - LT245/76R16, 65 psy front, 80 psi rear

e)  K2500 (4X4)Extended Cab, Long Box HD - LT245/75R16, 65 psr front, 80 rear

f)  K2500 (4X4) Exnded Cab, Short Box HD - LT245/75R16 65 psi front, 80 rear

g)  K2500 (4X) Regular Cab, Long Box HD - LT245/76R16 65 psi front, 80 psi rear