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The LMM began use in the new body style GMT 900 series trucks in 2007, and was later replaced in the 2011 model year with the current LML.
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Simply reference the model year of your vehicle when determining which injectors to purchase for your LLY and that will help bring some clarity when navigating our website or placing an order over the phone. The 2006 LLY and LBZ engines are essentially the same, so when working on a 2006 LLY you need to purchase LBZ injectors. The early 2006 engines were still called LLY but actually require the later LBZ injectors. In mid 2006 the Duramax changed, and with that change brought some confusion. If the 8th digit in your VIN doesn’t match any of the above, please give us a call with your full VIN number for confirmation. The example above shows the 2003 model year LB LLY. The 10th place in the VIN number identifies the model year on these vehicles. It is important to note that while the engines are essentially the same in their function, the electronics, turbochargers, and injectors are different among the variants.
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Determining which Duramax engine you have is nearly as straight-forward as knowing which model year vehicle you are repairing.
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