1993 GMC Sonoma Owner's Manual - Page 205

Winter Driving AN480001 Here are some tips for winter driving: Haveyourvehicle mix is correct. in good shapeforwinter. Be sureyourenginecoolant Snowtires can help in loose snow, but theymaygiveyoulesstraction on ice than regulartires. If youdonotexpecttobedriving in deep snow, butmayhave to traveloverice,you maynotwant to switch to snowtiresatall. You maywant to putwinteremergencysupplies in yourvehicle. Includean ice scraper,asmallbrushorbroom,asupplyofwindshield washerfluid,arag, some winterouterclothing,asmallshovel,aflashlight,a redcloth, and acouple of reflectivewarningtriangles. And, if youwillbe drivingundersevereconditions,includeasmallbag of sand,apiece of old carpet or acouple of burlap bags tohelpprovidetraction. Be sureyou properlysecuretheseitems in yourvehicle. Driving on Snow or Ice Mostofthetime,thoseplaceswhereyourtiresmeettheroadprobablyhave good traction. However, if there is snow or ice betweenyourtiresand the road,youcan haveaveryslipperysituation. You'll havealotlesstractionor"grip"andwill needtobeverycareful. 4-51