On 37 vehicles, the passenger-side rear safety belt may have been installed with an incorrect nut and bolt. In a severe crash, the upper seat belt anchorage may separate, reducing the effectiveness of the seat belt and increasing the risk of injury. Dealers will inspect the safety belt anchorage and install a new nut and bolt. The recall began August 23, 2004. The GM recall number is 04056.
 
Recalls
Recalls are issued for cars with safety-related defects or problems
2004 Chevrolet Cavalier
Rear Safety Belt May Be Installed with an Incorrect Fastener
Body, Interior & Misc., August 23, 2004