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I am about to hit the 10K mark on the mileage and I decided it is time to change the fuel filter. Interestingly, Autozone wanted $45 for a Champion and my Chevy dealer wanted $33 for an AC-Delco! Anyway, I had heard a special tool might be required to change the filter so I went to check with the diesel mechanic. I was told no special tool required, but he highly recommended to let the dealer do it. Apparently there is a potential issue with people changing it themselves that anywhere from a few minutes to 2-3 days later the truck would need to be towed in because it would not run. Is this a real issue or are they just trying to get my $120 for a fuel filter change? I was thinking air in the fuel system or an electrical connection failing.

I did find this info for tools: Merchant Automotive :: Your Duramax Diesel and Allison Transmission Experts! and this page: Merchant Automotive :: Your Duramax Diesel and Allison Transmission Experts!