1. #1
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    Default GMC 5500- Metal filings in oil?

    I'm curious if anyone's had this problem. We've been having oil pressure issues as of late and got it into the mechanic to check out. He drained the oil and found metal filings. This is the 8-liter gas-burner, not a diesel.

    Of course, GM is fighting us on warrantee, despite the fact it's got less than 10K miles and is just over the 2 year warrantee. We're working on that now.

    I'm mainly curious if anyone's experienced this and what they found to be the issue.

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    I don't know if this is the case, but GM may be fighting it based on the date it was sold/purchased from them, rather than the date it was delivered to you. I ran into this with a issue we had with a 95' Navistar 4700LP chassis once.

    There was a significant time difference from when the chassis was delivered to the body builder, and when it was delivered to the end user (Fire Dept).

    Make certain you're using the delivery date to you, rather than the purchase date from the GM dealer. You may need some paperwork to substantiate it. If you already are, then disregard this altogether.

    Metal filings in the oil is never good. It could by any number of components, but don't let them patch the worn part in the current engine. (like replacing the camshaft and lifters only) I'd push for a new replacement engine.

    Don't let them bully you on the issue. To deny your claim under the warranty, the burden of proof is typically on them. Here's a quick primer on automotive warranties.


    Also, I run a Filtermag on all my vehicles, as well using a magnetic drain plug. If the OEM drain plug isn't magnetic, I make one using JB weld and a neodymium disc magnet.
    • Engine
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    • Rear differential
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    Quote Originally Posted by txgp17 View Post
    I don't know if this is the case, but GM may be fighting it based on the date it was sold/purchased from them, rather than the date it was delivered to you. I ran into this with a issue we had with a 95' Navistar 4700LP chassis once.

    There was a significant time difference from when the chassis was delivered to the body builder, and when it was delivered to the end user (Fire Dept).

    Make certain you're using the delivery date to you, rather than the purchase date from the GM dealer. You may need some paperwork to substantiate it. If you already are, then disregard this altogether.
    That very subject came up at the recent International Emergency Vehicle Advisory group meeting. As you say, there is a procedure to be followed. Not all of the dealers are aware of it, or avoid it because of additional paperwork. If you need it, contact me at chiefengineer11@verizon.net. I can point you to the person within Navistar who can help you.

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    Well this I find interesting since I have two 5500 sitting in my station both are the 8L gas one is an 05 and the other is a 09. I can't say we have had any issues with metal filings that I am aware of but I will certainly be keeping an eye out for it now.

  5. #5
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    I know of two 5500's with the same engine that are now out of service due to blown engines.
    #1 is a 05 with just over 80k and was used as a refrigerated fish delivery truck.
    #2 is an 06 and was owned by a local landscaper flatbed and towed his equipment trailer around. Clock on it was at 25k
    Both got the same story from the dealer. out of warrantee, suck to be them. Now that GM has dropped the line it will be even worse.
    We have 2 t-8000 GMC's and wonder how long before parts start to get scarce.

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