1996 GMC Savana Van Owner's Manual - Page 218

6. Remove all the wheel nuts, and take off the flat tire. I A C it 'ION: - 7. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. Rust or dirt on the wheel, or on the parts to which it is fastened, can make the wheel nuts become loose after atime. The wheel could come' off and cause an accident. When change a you wheel, remove any rust or dirt from the places where thewheel attaches to the vehicle. In an towel emergency, you can use a cloth or a paper to do this; but be,sureuse a scraper or wire to brush later, if you need to, to get all the rust or dirt off. ~~ A CAUTION: 7 Never use oil or g;,ase on studs or nuts. you If loose. Your wheel could do, the nuts might come fall off, causing a serious accident. 5-30