GM's Overall Automation Maturity Index Explained
General Motors' Overall Automation Maturity Index (OAMI) is a framework for evaluating the automation maturity of suppliers' manufacturing operations. The assessment looks beyond individual automation investments to understand how effectively suppliers use automation, connectivity, and production data to improve manufacturing performance.
For suppliers, OAMI provides a way to benchmark their current capabilities, identify gaps, and prioritize improvements needed to support more connected and efficient manufacturing environments.
As automotive manufacturing continues to move toward greater automation and digital connectivity, assessments like OAMI reflect the growing importance of operational maturity alongside traditional supplier priorities such as quality, cost, and delivery.
TL;DR
OAMI is GM's new supplier scoring system for automation maturity.
OAMI isn't mandatory, and there is no universal deadline, but suppliers describe it as tied to future business.
Spending on equipment alone doesn't move the score. Data connectivity and integration across a plant do.
Suppliers that can't fully automate can still climb the scale by connecting what they already own, closing one workflow loop at a time, and standardizing before rolling out to other plants.
Fuuz helps automotive manufacturers connect systems, standardize execution, and build the operational foundation for greater automation maturity.
What Is GM's Automation Maturity Index?
GM's Automation Maturity Index provides a structured approach to evaluating a supplier's manufacturing automation and digital maturity. Rather than focusing solely on individual pieces of equipment, the assessment evaluates how effectively automation, data, and connected systems support consistent, efficient production.
The goal is to help suppliers understand where they stand on their automation journey, from isolated automation solutions to more connected manufacturing environments that provide greater visibility, control, and operational flexibility.
OAMI provides GM suppliers with a framework to assess their current capabilities and identify opportunities to improve automation, connectivity, and manufacturing performance.
How Does the OAMI Framework Work?
Mechanically, OAMI operates like most supplier self-assessments. GM sends a set of criteria; the supplier scores its own plant, and GM may follow up with supplier site visits or additional reviews to better understand how reported capabilities align with actual plant operations. What makes OAMI harder to game than it looks is what the on-site visit is actually checking.
Fuuz, which offers transformative automation software to suppliers and automotive manufacturers preparing for this kind of assessment, frames what that on-site visit is actually checking this way: most plants have two accounts of themselves that are both true and don't fully match. IT's account reflects the system diagram, the integration plan, and the data model that describes how the plant is supposed to work. Operations' account reflects what actually happens day-to-day: equipment that isn't networked, manual reconciliation between systems, and delays between when an issue occurs and when anyone notices it. Neither account is wrong on its own. An OAMI assessment is designed to evaluate the difference between intended system capabilities and actual operational execution. The score lives in the gap between them, and closing that gap is a bigger job than buying new machines.
What Are OAMI's Maturity Levels?
Although GM does not publicly publish a standardized set of OAMI maturity levels, the assessment generally reflects a supplier's progression toward more connected manufacturing operations. At one end of the spectrum are facilities that rely heavily on manual processes. As automation matures, suppliers typically introduce standalone equipment, connect production systems, improve data visibility, and ultimately move toward manufacturing environments that can respond more effectively to changing production conditions.
Is OAMI Mandatory for GM Suppliers?
GM has said that OAMI is a collaborative program rather than a requirement, and that there's no fixed deadline. GM frames the initiative as a way to work alongside suppliers on shared benchmarks for productivity, safety, quality, and competitiveness, and has said suppliers remain in control of how they run their own operations.
What Does OAMI Readiness Require?
Getting ready for an OAMI assessment starts with an inventory, not a purchase order. Three checks are worth doing before GM shows up:
Map Where Your Data Already Stops Flowing
Walk one product line from raw material receipt to shipment and mark every point where someone rekeys a number, prints a form, or hands off information in a spreadsheet. Each of those points represents a potential gap in automation maturity.
Count Your Integrations
Tally the point-to-point connections between ERP, MES, quality systems, WMS, and plant equipment. A growing number of undocumented point-to-point connections can indicate an architecture challenge that new equipment alone will not solve.
Have IT and Operations Score the Same Plant Separately, Then Compare
IT tends to score the system as it was designed. Operations tends to score it as it's actually run. The gap between those two numbers is close to exactly what a GM auditor will find.
The gaps that show up most often in real assessments follow a pattern: automated cells that don't share data with the rest of the plant, a spreadsheet standing between the floor and the ERP, years of brittle point-to-point interfaces that make adding one more machine harder each time, dashboards that show a problem without anything acting on it, and older equipment written off as too old to connect when it usually isn't.
How OAMI Fits GM's Supplier Standards
OAMI reflects GM's increasing emphasis on manufacturing automation and operational maturity within its supplier network. Alongside traditional priorities like quality, cost, and delivery, suppliers are expected to demonstrate that their manufacturing processes are reliable, scalable, and supported by appropriate levels of automation and production visibility. For Tier 1 suppliers, OAMI provides another framework for evaluating how manufacturing operations align with these expectations.
What Can Move an OAMI Score
While GM's specific scoring methodology is not publicly available, suppliers with stronger automation maturity typically share several characteristics. These capabilities help manufacturers move beyond isolated automation toward connected, data-driven operations:
Data accessibility: Production data is available when and where it is needed, without relying on manual collection, spreadsheets, or time-consuming requests.
Data contextualization: Raw production data is connected to the information that gives it meaning, such as the part produced, work order, equipment, operator, shift, or quality outcome, helping teams understand not just what happened, but why.
System integration: Manufacturing systems, business systems, and equipment can exchange information effectively, reducing disconnected processes and manual data transfers.
Closed-loop operations: Data is used to support faster decisions and actions, whether through automated responses, alerts, workflow triggers, or improved operator decision-making.
Scalable digital infrastructure: Successful solutions can be expanded across production lines, facilities, or sites without requiring a completely new approach each time.
A supplier with strong capabilities across these areas may demonstrate greater operational maturity than one that has invested heavily in automation equipment but lacks visibility, connectivity, or the ability to use that data effectively.
How Fuuz Supports OAMI Readiness
As manufacturers work to improve automation maturity, they need reliable visibility into operations and the ability to connect systems, standardize workflows, and act on real-time data. Fuuz provides the unified platform that enables those capabilities across manufacturing, warehousing, and supply chain operations.
Fuuz is a unified industrial operations platform that connects machines, enterprise systems and data into a single operational layer. It integrates with PLCs, robots, sensors, ERP systems such as SAP, Oracle, QAD, and Infor, historians, databases, and other operational technologies to create a governed, real-time source of truth without requiring manufacturers to replace the systems they already rely on.
Because execution, data, and workflows operate on the same platform, manufacturers can run MES, WMS, quality, maintenance, and connected-worker applications from a shared data model rather than from disconnected point solutions. This provides production teams with greater visibility into operations, enables event-driven workflows, and creates standardized processes that scale across multiple plants while maintaining enterprise governance.
For automotive manufacturers working to improve automation maturity, Fuuz provides the connected operational foundation needed to integrate systems, eliminate manual data handoffs, standardize execution, and turn production data into actionable intelligence. Whether the goal is to improve OAMI readiness or to advance broader digital transformation initiatives, Fuuz helps manufacturers build more connected, scalable, and data-driven operations.
Ready to see how a unified industrial platform can help connect your automotive manufacturing operations? Contact us.