1993 GMC Sonoma Owner's Manual - Page 117

Tachometer Thetachometeris available only with the digital speedometer. It displaysthe engine speed in revolutionsperminute (rpm). KO271 I Do not operate the engine with the tachometer in the red area, or engird damage I If you have the 4.3L High Performanceengine(VINCode W), you willhave a fuel regulatorthatshuts the fuel off when the enginereaches 5600 rpm. Warning Lights, Gages and lndicators This section describes the warninglights and gages that areonyourvehicle. The pictures willhelp you locatethem. Warninglights and gagescansignalthatsomethingiswrongbeforeit becomesseriousenough to cause anexpensiverepair or replacement.Paying attention to yourwarning lights and gages could alsosaveyouorothersfrom injury. Warning lights go on when there may be orisaproblemwithoneofyour vehicle'sfunctions. As you will see in thedetails on thenextfewpages, somewarning lights come on brieflywhenyou turn the ignition key just to let youknowthey'reworking. If you arefamiliarwiththissection, you should not be alarmedwhen this happens. 2-65