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  1. 01-04.5 LB7 Duramax Powertrain
    I think I may be have some injector problems. There is no smoke, but I may be getting diesel in my oil again. Until last fill up the only additive I had been running was a GM Diesel additive every 1,000 miles (per the diesel mechanic's recommendation at the GMC Dealership here in town). The...
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