Tires and Wheels problem
2007 Chevy Monte Carlo 6 cyl Front Wheel Drive Automatic 16100 miles
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yesterday i drove through fresly laid gravel, it had rained which made it very soft. my car came to a complete stop and thr front tires were buried about half way up in mud and gravel. a friend of mine got my car out of the rut it was in and this morning i noticed my information center was saying that the front left tire pressure needed checked. i checked all 4 tires and they all read 25. do you know what the factory sets my tires at? also the little horseshoe looking symbol that is on the rpm gage is lit up orange, i never noticed this until this morning also, do you know what that symbol is for????/any help is appreciated

I believe that the indicator on your dash is a low tire pressure indicator, and your tire pressure should be a t 35 psi