Global Machinery Company Sierra 1999 - Manual (Page 140)

yellow blue
2-68
Instrument Panel Cluster
United States Heavy Duty Automatic Transmission version shown, Canada,
Light Duty Automatic and Manual Transmission clusters similar
Your instrument cluster is designed to let you know at a glance how your vehicle is running. You’ll know how fast you’re
going, about how much fuel you have and many other things you’ll need to know to drive safely and economically.