DETROIT – Ford Motor Co. and Chrysler LLC are negotiating with the United Auto Workers over the amount they would put into a retiree health care trust and may not contribute as much as General Motors Corp. did, two people briefed on the talks said Friday.The issue is one of several differences that could derail the UAW’s plans to get Ford and Chrysler to match GM’s terms. They asked for anonymity because the negotiations are private. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREChargers go winless in AFC West with season-ending loss in Kansas City160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!