Are your low beams supposed be come on also when your high beams are on in your 1994 gmc sierra?

In a 1994 GMC Sierra, the low beams do not typically come on when the high beams are activated. The high beam function is designed to provide a brighter, focused light for visibility at greater distances, while the low beams are intended for general use and to avoid blinding other drivers. If both beams are illuminating simultaneously, it may indicate a wiring issue or a malfunction in the headlight switch. Always consult the vehicle's owner manual or a professional for accurate guidance.