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


