We've been working with the GM diesels since the introduction of the 5.7L Oldsmobile in the late 70's. We've rebuilt countless DB2 injection pumps since then, and we've helped thousands of 6.5L DS4 owners get their trucks back on the road. GM joined forces with Isuzu and really got with the diesel program in 2001 with the release of the first 6.6L Duramax 6600 LB7. The Duramax LLY followed in 2004, the LBZ in 2006, the LMM in 2007 and the LML in 2011.
The Chevy / GMC Duramax diesel engine was designed by Isuzu and is a hugely popular and successful General Motors diesel engine family for their light-and medium duty trucks. The 6.6-liter Duramax diesel engine is produced by DMAX, which is a joint venture between GM and Isuzu. The Duramax engine was initially installed in 2001 model vehicles and has been an option since then in the GM line of pickups, vans, and medium-duty trucks.