2015年6月22日 · Chevrolet offered the 5.7 liter vortec engine in some of its 1999 C1500 pickups. During 1999 the 5.7 was phased out and GM introduced the 5.3 liter. The reasoning for this transition was to improve on the 1500's fuel economy and reduce its emissions output.

2015年7月9日 · The 5.3L Vortec replaced its predecessor (the 5.7L) in the year 2000 after mounting pressure to improve upon a 40-year-old engine design and compete with more advanced truck engines. The 5.3L Vortec engine has not been offered since 2003, but it remains a favorite among enthusiasts and still has a legion of devoted fans.

2015年7月23日 · Figure 1. Vortec 4.8 and 5.3 liter cylinder heads and oil cap. Figure 2. Castech heads cracking and coolant leak. Figure 3. Castech cylinder head coolant leak. Step 2 – Valve lifters and camshaft noise and damage. What causes this problem? Valve lifter noise is a light, rapid metallic clicking: imagine 16 metal butterflies crashing together ...

2015年6月11日 · This article applies to the Chevrolet Silverado GMT800 (1999-2006). As the air/fuel mixture ignites in an engine cylinder, the high pressure combustion causes a very small amount of gases to slip through the piston rings and into the crankcase, also known as 'blow-by.'

2015年7月1日 · This article applies to the Chevrolet Silverado GMT800, and GMT900 (1999-2013). The crankshaft position sensor keeps track of the position and rotations of the crankshaft.

2015年6月23日 · The Vortec 4.8, 5.3, and 6.0 liter engines have a main accessory drive belt for the water pump, power steering, and alternator. The air conditioning compressor is driven by a separate belt that is mounted low on the engine and behind the accessory belt.

2015年7月6日 · The Vortec 4.8, 5.3, and 6.0 liter engines have a main accessory drive belt for the water pump, power steering, and alternator. The main belt has a GM auto-tensioner (which maintains spring pressure to automatically adjust for optimum tension as …

2015年6月10日 · This article applies to the Chevrolet Silverado GMT800 (1999-2006). To run smoothly, an engine must be well lubricated—hence, the use of engine oil.

2015年7月24日 · Observe the pressure limit printed on the expansion tank cap; for example, 15 psi on the Vortec 5.3 liter. Do not pressurize the system over 15 psi. When you spot a leak, don't assume that is the only leak. Check the entire system.

2015年6月10日 · This article applies to the Chevrolet Silverado GMT800 (1999-2006). An EGR valve allows approximately 5% to 10% of exhaust gas to re-enter the intake manifold.