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Professional Cummins generator maintenance, repair, and emergency service from qualified, experienced generator technicians. Independent service often means lower costs, faster response, and better customer care than dealer service.
✓ Nearly 30 Years Michigan Experience
✓ 24/7 Emergency Service - All 83 Counties
✓ Service All Cummins Makes and Models (Onan, Power Generation, QuietConnect)
Many Cummins generator owners assume they must use Cummins dealer service for maintenance and repairs. **That's not true.**
You have options. And choosing an independent service provider like Wolverine Power Systems often means:
Fast arrival in Detroit, Lansing and Grand Rapids metro areas.
Technicians certified for industrial, commercial and residential generator service.
Statewide from lower peninsula factories to upper peninsula remote sites
Custom maintenance to cut downtime by 90% and extend equipment life.
Strategic locations and one of the largest service team in Michigan ensure rapid response anywhere in the state.
Industrial, commercial and residential sales, service, rentals, and parts - everything you need for a complete energy solution.
Required for NFPA 110 Level 1 systems and recommended for all critical power applications.
Cummins diesel generators that run lightly loaded (monthly tests at no load or low load) can develop "wet stacking" - incomplete combustion that causes:
Annual load bank testing prevents these issues and verifies your Cummins generator will perform when you need it most.
We bring portable load banks to your site. Testing typically takes 4 hours. Complete documentation provided for compliance files.
Send us a photo of your generator nameplate or call us with the model and serial number. We'll confirm compatibility and provide a service quote.
Our Diagnostic Process: Complete electrical testing, fuel system check, compression test if needed, control board diagnostics
Our Diagnostic Process: Load testing, alternator testing, voltage regulation check, fuel pressure verification
Our Fix: Load bank testing to burn off deposits, air filter replacement, injector cleaning or replacement, turbo inspection/service
Our Diagnostic Process: Cooling system pressure test, flow test, radiator inspection, thermostat testing, water pump verification
Our Diagnostic Process: Oil level check, pressure gauge testing, sensor verification, mechanical inspection if needed
Injector leak - fuel seeping past injector seals
Fuel pump leak - internal fuel pump seal failure
Cylinder liner issue - fuel washing past rings
Our Fix: Injector testing and replacement, fuel pump seal replacement, oil change with correct spec oil, retest
Why It's Serious: Diesel fuel dilutes engine oil, reducing lubrication. Can cause catastrophic engine damage if not caught early.
Give us a call to arrange a Service visit and diagnostics.
No. Federal law (Magnuson-Moss Warranty Act) prevents manufacturers from voiding warranties because you use independent service providers. As long as:
- We use OEM Cummins parts
- We follow Cummins service procedures
- We maintain proper documentation
Your Cummins warranty remains valid. We provide all documentation needed for warranty claims.
Yes. We stock and use genuine Cummins OEM parts for all critical components. For non-critical wear items (like oil filters), we may offer premium aftermarket alternatives that meet or exceed Cummins specifications - always with your approval and at lower cost.
Absolutely. See warranty question above. We maintain all documentation required for warranty compliance.
Our average emergency response time is 2.3 hours across Michigan. For PMA customers, we target 2 hours or less. Response times vary by location.
We respond 24/7/365 including holidays.
Yes. Our Preventive Maintenance Agreements (PMAs) include quarterly service visits, all routine maintenance, priority emergency response, parts discounts, and compliance documentation.
Yes, but primarily when they're installed in commercial applications (mobile command centers, emergency vehicles, etc.).
Yes. We provide:
- Monthly loaded testing
- Annual load bank testing
- Transfer switch testing
- Complete compliance documentation
- Test logs formatted for surveyors
- NFPA 110 compliance consulting
We work with hospitals, data centers, and other facilities requiring strict compliance.
Yes. Our technicians are trained on both diesel and natural gas Cummins generators. Natural gas service includes:
- Gas valve inspection and testing
- Spark plug replacement
- Ignition system service
- Gas pressure verification
- Gas line leak testing
We service all makes and models of generators – large and small. From emergency repairs to preventive maintenance, we keep your backup power systems running reliably when you need them most.
Wolverine Power Systems has four strategically located facilities to ensure rapid response and comprehensive service coverage throughout Michigan, from Detroit's urban core to Grand Rapids' tech hubs, Lansing's government buildings, and Flint's industrial zones. We understand Michigan's unique power challenges—extreme weather, regulatory needs, and 24/7 demands.
From Upper Peninsula remote sites to Lower Peninsula urban hubs, our mobile fleet covers it all.
**Rural areas:** We service all 83 Michigan counties. Response times may be longer in remote areas, but we cover the entire state.
Full sales, service, parts, and rentals. Authorized Generac generator training center.
