The following applies specifically to Chevrolet Performance cores (prefix NAL-). Click this link for instructions on How to Return All Other Cores.

Chevrolet Performance cores must be returned directly to them. Please follow the instructions below.

Package the Old Parts

  1. Drain all the fluids.
  2. Secure the old parts in the same container the new parts arrived in.
  3. Attach the GM Part Number tag to the outside of the container.
  4. Clearly label the container "Core".
  5. The shipping label must state "Core Return."
  6. Ship the container (prepaid) to:

Return Address

SDPC - Core Returns
5901 Spur 327
Lubbock, TX 79424


  • After the core is received and inspected, we will issue your Refund.
  • You are responsible for the cost of return shipping.
  • For the best service, please return your core within 90 days of purchase.
  • The core must be in the same assembled state as the new part.
    • GM will not accept cores that are partially assembled, disassembled, or missing components.
  • In accordance with state and local laws, sales tax charged on core value may be non-refundable.
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