GMC Sierra Line Engines (1500–3500, HD, Classic, Limited)

The GMC Sierra lineup—ranging from the light-duty 1500 to the heavy-duty 3500 HD—has long been a benchmark for truck performance and reliability. Built to handle demanding workloads and long hauls, the Sierra’s V6 and V8 powertrains define endurance.  Common Problems  Lifter tick in AFM-equipped V8s  Oil pressure fluctuations under load  Timing chain wear on high-mileage … Read more

GMC Savana Line Engines (1500 / 2500 / 3500 / 4500)

The GMC Savana van line powers commercial, fleet, and utility vehicles across North America. Known for its robust engines and high-mileage potential, the Savana remains a go-to choice for contractors and transport companies.  Common Problems  Oil pressure sensor malfunctions  Exhaust manifold cracking  Timing chain and lifter noise  Cooling system leaks  Sensor or ECM errors under heavy load  … Read more

GMC Jimmy, S15 Jimmy, and Typhoon Engines

The GMC Jimmy and S15 Jimmy were trusted compact SUVs known for their rugged dependability, while the rare GMC Typhoon brought turbocharged performance and sports-car handling to the SUV world.  Common Problems  Vacuum leaks and sensor failures  Turbocharger wear on Typhoon models  Intake manifold gasket leaks  Timing chain stretch in high-mileage engines  Cooling system corrosion  … Read more

Buick LaCrosse Remanufactured Engine

Buick LaCrosse Remanufactured Engine Smooth, stylish, and reliable — the Buick LaCrosse represents the best of Buick’s modern engineering. With its refined V6 power and quiet cabin, the LaCrosse quickly became a popular choice for luxury sedan buyers. If your LaCrosse engine has high mileage or has suffered a failure, Gearhead Engines can restore it … Read more

Buick Regal Remanufactured Engine

Buick Regal Remanufactured Engine The Buick Regal has always embodied refined performance — from its classic GS models to today’s modern turbocharged trims. When your Regal’s engine starts losing power or reliability, a remanufactured engine from Gearhead brings it back to peak condition. Our remanufactured Regal engines are rebuilt with precision, using advanced machining and … Read more

Buick LeSabre Remanufactured Engine

Buick LeSabre Remanufactured Engine For decades, the Buick LeSabre stood as one of America’s best-selling full-size sedans, known for its quiet ride, durability, and comfort. Many LeSabres remain on the road today thanks to their sturdy design and dependable powertrains — but like any vehicle, their engines eventually need attention. Gearhead Engines specializes in remanufactured … Read more

Buick Reatta Remanufactured Engine

Buick Reatta Remanufactured Engine The Buick Reatta remains one of the most distinctive and collectible Buicks ever made. Handcrafted and produced in limited numbers, the Reatta combined Buick luxury with sporty, personal coupe styling. Today, Reatta owners appreciate its timeless design, smooth driving feel, and durable 3.8L V6 engine — but after decades on the … Read more

Dodge Neon & Dodge Colt Engines

Dodge Neon & Dodge Colt Engines: Reliable Compacts With Surprising Performance Drivers who love lightweight, responsive, no-nonsense cars know the Dodge Neon and Dodge Colt well. These compact models earned loyal followings for their balance of efficiency, durability, and fun-to-drive personality. Today, many owners are restoring them, daily-driving them, or even building spirited street and … Read more

Dodge CB300 Engine 

Dodge CB300 Engine Overview  The Dodge CB300 was a heavy-duty workhorse for fleet and industrial use, prized for stout torque and straightforward serviceability across demanding duty cycles.      Dodge CB300 Engine Common Problems  Oil pump wear from prolonged high-load use  Overheating caused by radiator corrosion  Valve seat degradation on high‑mileage heads  Crankshaft bearing wear  Hard starting due … Read more

Dodge M-Series Engine 

Dodge M-Series Engine Overview  The Dodge M300 and M350 were built for heavy-duty service, powering step vans, motorhomes, and commercial fleets. These chassis used durable big-block V8 engines capable of handling serious loads.      Dodge M-Series Engine Common Problems  Oil leaks from valve covers and pans  Overheating under heavy load  Cracked exhaust manifolds  Carburetor and … Read more