GMC LI3500, I1000–I3500 Engines
The GMC LI and I-Series trucks were known for their industrial toughness, delivering dependable power in commercial applications from the mid-century through modern iterations. Common Problems Cracked cylinder heads under sustained load Overheating due to coolant system wear Fuel inefficiency from carburetor or injector issues Engine knock from worn bearings Loss of compression due to … Read more


