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Wackerli GMC service sucks - Ralph Dickenson
Absolutely horrible service and communication from the GMC service department. Took it in to have two valve cover gaskets replaced as well as an oil sending unit. Took it in on a Thursday and got it back Friday.. that would be the Friday 8 DAYS LATER. They blamed it on freight, never took onus for it themselves. I wouldn't wish them and their lack of professionalism on anyone.