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The factory recommended tire pressure is 35 psi, but most cars and trucks are 32 psi
Lift the vehicle on a jack, remove the tire, remove the brake shoe/caliper, and remove (and throw away) the old brake pad. Put in a new brake pad, replace the brake shoe/caliper, replace the tire, and lower the vehicle to the ground.
Under the back seat
It is reset with the radio controls, Listed in your owner's manual.
Generally requires removing and dismounting the tire, replace TPMS sensor, remount tire, balance tire, re-install tire to vehicle, do the relearn tire position procedure.
Lift the car on a jack, remove the tire, remove the brake shoe/caliper and remove the old brake pad. Put in the new brake pad, replace the brake shoe/caliper, replace the tire and lower the car.
under the rear passenger seats
To change a tire you will need a jack to lift the car, a spare tire, and a tool to remove the bolts of the tire. Use the jack first to lift the car, then remove the tire, replace it with the new one, and tighten the bolts.
Jack it up, Remove Tire, Undo the two bolts on the Shock Absorbers take old one off, reverse to complete
The stock (OEM) tire size for a 1998 Chevrolet Tahoe is 245/75R16.
To change a flat tire you need a jack, tire iron and a new tire. Jack the car up and remove the bolts, you can then slide the old tire off and replace it with the new one.