The 4.8-liter GM LY2 or Vortec 4800 V8 engine was produced by the company from 2006 to 2017 and was put on the Tahoe and Yukon SUVs, Silverado pickups, Express and Savana vans. In 2009, this unit received a variable valve timing system and its L20 index.
The Vortec IV range also includes the LY5, LFA and L92 engines.
Engine specifications for GM LY2 4.8 l
| Displacement | 4806 cc |
| Power system | Distributor Injection System |
| Engine power | 260 – 305 hp |
| Torque | 400 – 415 Nm |
| Cylinder block | Cast iron V8 |
| Cylinder head | Aluminum 16v |
| Cylinder diameter | 96 mm |
| Stroke | 83 mm |
| Compression ratio | 9.1 |
| Engine features | OHV |
| Hydraulic compensators | Yes |
| Timing Chain/Belt | Timing Chain |
| Variable Valve Timing (VVT) | since 2009 |
| Turbocharger | No |
| Oil capacity/Recommended oil | 5.7 l 5W-30 |
| Fuel type | Regular |
| Euro class | EURO 3/4 |
| Average lifespan | 400 000 km |
Fuel consumption двс Chevrolet LY2
The Chevrolet Tahoe 2008 with automatic transmission as an example (l/100km):
| City | 13.9 l |
| Highway | 9.0 l |
| Combined | 11.9 l |
What cars use the LY2 4.8 l
| Express 2 (GMT610) | 2006 – 2017 |
| Silverado 2 (GMT901) | 2006 – 2013 |
| Tahoe 3 (GMT921) | 2006 – 2009 |
| Savana 2 (GMT610) | 2006 – 2017 |
| Sierra 3 (GMT902) | 2006 – 2013 |
| Yukon 3 (GMT922) | 2006 – 2009 |
Common Problems of the Chevy LY2 / Vortec 4800 4.8L Engine
If you drive a Chevy LY2 or Vortec 4800 4.8L, then you know that this engine is a powerhouse with great performance and fuel economy. However, like any engine, it can experience issues that require attention. Let’s take a look at four common problems of the Chevy LY2 / Vortec 4800 4.8L engine and what you can do to prevent such issues from occurring in your vehicle.
Water Pump Failure:
The water pump on the Chevy LY2 / Vortec 4800 4.8L engine often fails due to age and wear-and-tear. This problem can lead to overheating, which can damage other components in the engine if not taken care of immediately. To avoid this issue, it is recommended that you replace your water pump every 60,000 miles or so and inspect it for signs of failure regularly.
Intake Manifold and Gasket Leaks:
Over time, the intake manifold gaskets may develop leaks due to age or excessive heat from the engine. These leaks can cause vacuum loss in the intake system as well as poor performance due to air/fuel mixture imbalances in the cylinders. To fix this issue, it is important to replace faulty gaskets and inspect for signs of leakage regularly.
Engine Intake Knock Sensor:
The knock sensor on the Chevy LY2 / Vortec 4800 4.8L engine has been known to fail over time due to wear-and-tear or excessive heat from the engine operation. This problem can cause misfires in the cylinders as well as an incorrect air/fuel mixture that leads to poor performance and higher emissions levels than normal. To fix this issue, it is important that you replace your knock sensor before it causes major damage to your vehicle’s performance capabilities.
Fuel Pump Failure:
The fuel pump on these engines has also been known to fail over time due to a lack of maintenance or wear-and-tear from use over long periods of time. This problem can cause poor performance due to inadequate fuel delivery or even complete stalling out if not taken care of properly and promptly when noticed by drivers or mechanics alike! To avoid this issue, be sure to maintain regular inspections on your fuel pump as well as replacing clogged filters when needed for optimal performance levels from your vehicle’s fuel delivery system!
Reliability
All engines experience problems at some point in their life cycle, but knowing how to spot common issues with your Chevy LY2 / Vortec 4800 4.8L helps ensure you get maximum performance out of your vehicle over its lifetime! Water pump failure, intake manifold and gasket leaks, engine intake knock sensor problems, and fuel pump failures are all common issues that need prompt attention when they arise – so keep an eye out for these potential warning signs while driving your vehicle! With regular maintenance inspections done by qualified professionals every few thousand miles combined with proper routine upkeep like changing fluids regularly – you’ll be able keep these four common problems at bay while enjoying many more years of great performance out of your Chevy LY2 / Vortec 4800 4.8L Engine!
How long will a LY2 / Vortec 4800 4.8L engine last?
The LY2/Vortec 4800 4.8L engine is a durable and reliable motor, but the lifespan of an engine can vary depending on how well it is maintained and its overall usage. Generally speaking, these engines should last for up to 200,000 miles with regular oil changes and proper service. If the vehicle is driven in harsher conditions such as stop-and-go traffic or extreme temperatures, however, it may need servicing more frequently and thus have a shorter life-span. Overall though, given proper care, the LY2/Vortec 4800 should provide years of excellent performance.
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