Question: Where are the dash lights in my 1992 GMC 1500 Sierra 350 so i can fix them they went out ? Answer: Make sure your gauges fuse is good.(fuse # 4, 10 amp). The bulbs are located behind/inside the dash cluster and require removal to replace them. I have added the procedure below for reference. 1992-94 C/K Models Disconnect the negative battery cable. Remove the instrument panel cluster bezel. Unplug the electrical connections for the headlamp switch and the dimmer control. Remove the radio control head. Remove the heater control panel. On air conditioned vehicles, disengage the A/C harness. Remove the cluster retaining screws. Disconnect the gear shift indicator cable from the steering column shift bowl. Carefully pull the cluster towards you until you can reach the electrical connector. Unplug the connector. Avoid touching the connector pins. If replacing the bulbs, turn the bulb assembly 1⁄2 turn to the left to remove. To install: Install the bulb assembly. Carefully position the cluster until you can reach the electrical connector. Plug in the connector. Avoid touching the connector pins. Install the cluster retaining screws. Connect the gear shift indicator cable. Install the heater control panel and A/C harness (if removed). Install the radio control head and any attach any electrical connections that were removed. Install the bezel. Connect the negative battery cable.