Tachometer
The tachometer displays the engine speed in revolutions per minute (rpm).
See also:
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts
and GM-trained and supported service people. Genuine GM parts have one of these
marks:
...
Trademarks and License Agreements
Manufactured under license under U.S. Patent #'s: 5,451,942; 5,956,674; 5,974,380;
5,978,762; 6,487,535 & other U.S. and worldwide patents issued & pending. DTS and
the Symbol are re ...