The short answer is GM does not offer an official permanent free tier for its live, dealer-login system. But you can legally access the vast majority of the EPC鈥檚 data鈥攊ncluding exploded diagrams, GM Original Equipment Manufacturer (OEM) part numbers, and fitment data鈥攁t zero cost using the right strategies.
Go to a major GM dealer e-commerce site (e.g., GMPartsGiant or ChevyPartsDept). Step 2: Do not search by year/make/model. Instead, click "Search by VIN" (This forces a direct EPC query). Step 3: Enter your VIN or a VIN from a junkyard donor (use AutoTempest to find a VIN if yours is wrong). Step 4: Click the category "Body Hardware" > "Outside Mirrors." Step 5: View the exploded diagram. You will see callout #10 pointing to the mirror. Step 6: In the table, line #10 shows part number: 23371826 (example). Step 7: Copy that number and paste it into eBay, Amazon, or RockAuto.
The Verdict: Is a Free GM Global EPC Possible? Yes, but it is fragmented. gm global epc electronic parts catalogue free
You cannot download a single "GM Global EPC electronic parts catalogue free" file that works like dealer software. That does not exist legally.
Therefore, the demand for a version is immense. You don't need live pricing; you need part numbers and diagrams to cross-reference or search on eBay, Amazon, or local pick-n-pulls. The Official (But Limited) Free Route: GM鈥檚 Public Portal Most people do not realize that General Motors actually provides a public-facing, free version of its EPC. It is not called "Global EPC," but it serves the same core function. The short answer is GM does not offer
Now, go find those part numbers and keep those GMs on the road. Disclaimer: This article is for informational purposes. GM, Global EPC, ACDelco, and other trademarks are the property of their respective owners. Accessing dealer systems through unauthorized means violates terms of service.
Find the GM OEM part number for a 2015 Silverado 1500 driver side mirror. Step 2: Do not search by year/make/model
For automotive professionals鈥攆rom salvage yard operators and independent mechanics to restorers of classic Chevrolets and fleet managers鈥攖he General Motors Global Electronic Parts Catalogue (EPC) is the holy grail. It is the exact same digital blueprint used by official GM dealerships to identify, price, and order components.
