if an emergency situation, e.g., a cylinder headgasket blows in the middle of nowhere, WINs (GM's warranty division) could authorize a repair, to help the customer, and save GM a large towing bill, since the engine is used by Chevy and GMC.
All warranty, in any GM vehicle goes through WINs; except for Saturn (and maybe Saab), and their paid claims end up in WINs reports.
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Black Sheep Hummer Squadron
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