Hi guys,
my 1992 Chevrolet G20 Van
Some weeks ago, the batery was drained due to a little interior light staying on in the sun visor. The battery was not very wel either, so it was dead. I jumpstarted with a spare battery and went for a drive. All went well. After a stop of one hour, it restarted on its own. The second trip after the stop, after some 30 km's the red warning light in the dash came on. It is a combined light and shows the Engine symbol, the Brake signal and the Park signal al together.
My mechanic had a good look but can not find the problem. We replaced the battery for a new one. There is good brake pressure. No leakage. It is not the parking brake, for if I depress that one, the light will double it's intensity and when I release it it will decrease intensity.
If we try to read the diagnosis by jumping the terminal, the code seems to point to a rear wheel 4x4 sensor, which I do not have as it is not a
4x4. The electric brake power control valve system is not newly available anymore, and a used one cost a lot but why should it be faulty ? Braking is very good.
What could be the problem ? How to diagnose?
Please help, al advise is appreciated
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