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 valve aging
Why Remanufactured?
Gearhead Engines offers remanufactured powertrains designed for heavy-duty use, extending the life and reliability of these enduring GMC workhorses.
Just for fun – GMC Engine Trivia
Trivia: What markets used the I-Series most?
Fun Fact: Why is remanufacturing better than replacing?
FAQs
Q: Q: Are Gearhead remanufactured GMC engines emissions-compliant?
A: A: Yes, each engine meets or exceeds original emissions standards when properly installed.
Q: Q: Do you offer warranties on industrial remanufactured GMC engines?
A: A: Yes, Gearhead provides competitive warranty coverage for peace of mind.
Rebuild your GMC I-Series or LI3500 with confidence—find your remanufactured solution today at GearheadEngines.com.
Also explore our new Gearhead Advantage section.