At first the brake and ABS lights would randomly come on, it has the tow package and hydra boost brake system, stay on a short time and go off while driving. Two days ago, they came on and stayed on the rest of the day. I checked the fluid level and the park brake switch, the fluid was good, and the switch is open with the pedal released and closed with the pedal set, pushing and releasing the park brake pedal does not affect the red brake light at all. I disconnected the battery for a while, probably half an hour. When I reconnected the battery all the lights were out on startup, about 10 seconds after startup, did not touch the brake pedal, both the ABS and Red Brake light came on and I noticed for the first time, the front blower motor quit at the same time. After a few more times, I can tell you both the front and rear blower motors quit at the same time, 5 to 10 seconds after starting up, as the lights come on. Now, even after resetting the battery, the lights come on with the key on and don't ever go off. Couple parts stores tried to get the ABS codes, but it would not communicate with any of their scanners. The only code found was in the SRS U1000.
I've cleaned all the grounds I could find and checked all the fuses. It feels like the two systems are somehow sharing this problem and that points to? The Body Module? Or am I nuts?
Thursday, July 3rd, 2025 AT 4:33 PM