Apply for your GCL Core Return using this form

Please try to provide as much information as possible to ensure a smooth and quick turnaround.  DO NOT send any parts for core return without getting a Return Core Authorization (RCA) number from GCL Diesel.  Cores MUST be returned in the original box to be eligible for credit.

Please Note: Effective September 1st 2021, please ship all core returns to our new GCL Core Warehouse located at:

GCL Diesel Core Returns
15845B 112 Ave NW
Edmonton, AB T5M 2V9

Our promise to you: The information you supply to us will not be sold or provided to outside agencies. It will only be used to enable GCL Diesel to serve you, our customer, better. For more details, read our privacy policy.

NOTE: Cores must be “like for like” which means part number for part number and returned in the same box that your new unit arrived in. Cores must be complete, without previous disassembly. Cores must not be damaged by non-operational causes, such as torch or tool marks, water damage or fire damage.

Your Information

Core Information

You may optionally enter in N/A and upload an Excel spreadsheet
You may optionally enter in N/A and upload an Excel spreadsheet

Attach Supporting Documentation

Valid attachment types are.doc, .docx, .xls, .xlsx, .pdf., jpg, .jpeg, .bmp, .png, and .gif

Maximum file size: 10MB

You may upload up to 10 files