General Motors' Duramax engine family is one of the three leading ... One issue to watch out for is the wiring harness, which, on GMC's AT4 trucks at least, is pulled too tightly around the ...

One of the technical highlights of the last generation GMT-800 full-size trucks from GM was the Duramax turbo-diesel V-8. This strong, efficient, refined engine was miles ahead of the Navistar ...