Hi,
I have an 02 C5 coupe with run flat tires - last night when I started it, the DIC showed the tire pressure in the rear left tire as low -
24psi. I stopped by a gas station and added air to all tires to make them 28-30psi.This morning when I started it, the DIC showed the pressure on the rear left tire as low again - 23psi! Not sure if this is a leak - the tire looks good and does not need replacing.
Any suggestions? I would prefer to avoid going to the dealer for this if possible!