See also:

Center High-Mounted Stop Lamp (CHMSL)
The CHMSL uses LED lamps that are not serviceable separately. The CHMSL must be replaced as an assembly, see your authorized dealer. ...

5.7L Engine – If Equipped
This engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high-quality unleaded gasoline having an octane range of 87 to 89. ...

Instrument Cluster Descriptions
1. Tachometer This gauge measures engine revolutions-per-minute (RPM x 1000). 2. Park/Headlight ON Indicator — If Equipped This indicator will illuminate when the park lights or headlights ...