89 k5 won\'t start, here\'s what it\'s doing. HELP !!!!. Wen't to start the black and grey 89 blazer yesterday. Turn the ignition and it turns over, but it's not getting fuel to the tbi. I hear a buzzing noise from under the hood, I trace it to a relay on the passenger side firewall. It's mounted on a bracket next to the accessory underhood light. It buzzes loudly. Does anyone know what this is? I took the same relay off my other 89 Blazer, plugged it into the black/gray 89 and same thing. Swapped this relay from truck to truck.. the white 89 started with each one. Anyone ever had this problem?