Part identification 4 min read
How to Find Your GM BCM or Ford GEM Part Number
A clear label photo and the complete identifier are the best starting point for comparing replacement modules.
Read guide OEM Modules guides
Understand your module before ordering
Use these practical, source-backed guides to record the complete identifier, understand BCM and GEM terminology, and prepare the right questions before buying.
Three starting points
Practical guidance for a careful purchase
Each guide keeps identification, diagnosis, and vehicle-specific setup as separate questions.
Module basics 4 min read
BCM vs GEM: Understanding the Module Names
Understand the names used in the GM BCM and Ford GEM catalog without treating similar modules as interchangeable.
Read guideBuying guidance 5 min read
Before You Buy a Replacement BCM or GEM
Six questions to resolve before you spend money on a replacement body-control module.
Read guideReady to compare listings?
Use the part finder when you have the complete identifier, or browse the catalog and select a category.
Browse modules