GMC C1500 Suburban broken hazard switch issue in 1990 model on GMC C1500 Suburban

Some 1990 GMC C1500 Suburban owners report experiencing issues with the hazard switch, which can affect the functionality of both turn signals and hazard lights. These problems may manifest as turn signals that only operate when the hazard switch is depressed, indicating a malfunction within the switch itself. Testing for voltage at the lights can help diagnose whether the issue stems from the switch or a blown fuse. Additionally, some owners have encountered situations where a broken hazard light button causes the flashers to remain constantly on, even when not engaged. To resolve these issues, it may be necessary to replace components such as the brake switch, bulbs, light fixtures, and the hazard switch itself. Owners should also observe whether the hazard lights stay steady with the brake depressed or remain on at all times, as this can provide further insight into the problem. For those addressing the hazard switch, following proper disconnection and removal procedures is essential for effective troubleshooting.