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  1. 01-04.5 LB7 Duramax Powertrain
    Hey guys I’ve been lurking for a long time and recently purchased my first diesel. I bought an 04 LB7 that needs a little love. When I bought the truck the air dog lift pump wasn’t working. I found it had a bad relay and swapped it out and now the pump works well. However, with the pump running...
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