6.2 diesel burning antifreeze

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by Casmith245, Apr 9, 2013.

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  1. Casmith245

    Casmith245 New Member

    Hi. My 1990 2500 suburban Burns up antifreeze. Its not leaking anywhere any ideas on what the problem is? I know it has to be something in the cooling system I just am not sure what. It also just got a new battery, and is going to be getting a new starter here in a couple weeks. Any advice on why its burning anti freeze would be helpfully. Thanks
  2. Chris Miller

    Chris Miller New Member 100 Posts

    Get some UV dye for coolant systems and put in there. Then hit it with a UV light to see if there's an external leak. With an external leak, depending on where it is, it could well burn off before it hits the ground and you'd see nothing. If not, it's probably a slight head gasket leak.
  3. bazar01

    bazar01 New Member 100 Posts

    Using a cooling system pressure tester is the only way to go. You can loan the tool from any parts store and just pay a refundable deposit
  4. Chris Miller

    Chris Miller New Member 100 Posts

    That will tell you if there is a leak, but not where the leak is.

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