Continued speedometer issues
I am about at wits end with the randomly working speedometer in my 95 GC. I have been through 2 complete gauge cluster, 3 different circuit boards that go on the back of the speedometer itself, 2 transmission speed sensors, and I have cleaned the grounds that attach to the engine block and fender. When the speedometer works, it works great, and the odometer spins as it should. Then for no reason, it will die completely and take the odometer with it. This seems to happen upon the first time the vehicle is started or restarted. After I drive for about 5 or 10 minutes, it will usually come back on and stay on until the vehicle is restarted again. Temperature does not seem to matter as this has happened in cold, warm, and hot weather. For ****s and giggles, I have tried the cruise control when the speedo dies, and it functions normally.
The way this happens leads me to believe it is some sort of ground issue, but I haven't found any obvious issues. Do any of you have any other suggestions I could try? Could it be the pcm having issues?