doesn't matter if bought from JEGS:
http://www.jegs.com/customerservice/GM_Warranty.pdf"General Motors LLC warrants to the purchaser for the time and/or mileage indicated that it will repair or replace, at its option, using new or remanufactured parts, any GM Parts Service Replacement Engine, Engine Component, Transmission/Transaxle, Transmission Component, Transfer Case or Short Block
Assembly that fails due to a defect in material or workmanship"
"WARRANTY BEGINS ON THE DATE OF INSTALLATION BY AN AUTHORIZED GM DEALER OR BY A QUALIFIED INDEPENDENT SERVICE CENTER.
FOR OVER-THE-COUNTER SALES, WARRANTY BEGINS ON DATE OF RETAIL SALE."
"Direct any inquiries to:
General Motors LLC
Consumer Relations Dept.
P.O. Box 33136
Detroit, MI 48232-5136"
looks very straight forward to me
Bill