As the UAW-GM strike stretches into week five, the parts pipeline stretching from factories to service techs fixing GM brands hasn’t gone dry – yet. This conversation is moderated according to USA TODAY’s community rules. Please read the rules before joining the discussion. Car dealers are leaning on General Motors managers to find spare auto parts as the strike slows the output of oil filters, valves, rings and other items mechanics rely on to maintain the 30 million-plus GM vehicles on the nation’s roads. The pipeline stretching from factories to technicians working on GM’s Buick, Cadillac, Chevrolet and GMC brands is far from dry, although car dealers and service managers report they regularly phone other dealers and salaried GM personnel in search of spare parts. “We’re starting to see parts in short supply,” said Russ Clark, general manager at Cadillac of Knoxville. ”That’s where we’re going to see it hurt most if the strike goes on for a couple of more weeks.” Even with the walkout edging up on week five, auto dealers remember this one isn’t quite as dire at that long one 21 years ago. There’s a reaso...