ABS Problem stability control lights?

Tiny
GKT656
  • MEMBER
  • 2020 CHEVROLET EQUINOX
  • 1.5L
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 112,000 MILES
After a rain storm. Started car and traction control, stability control and parking brake maintenance lights were illuminated and solid. On the drivers info center it states:
Action Required: steering assist reduced. Drive with care.
Service: ESC
Service: AWD
Before the issue I changed front passenger caliper piston because old piston was stuck.
After the above issue started changed front rotors and pads due to warped rotors. Took it to the dealer and first they said it was the fuse box. I drove it for a week with the above issue and the car operated as “designed” after taking it to the dealer the car would have a what I can think of is a power interruption and the engine would shut off while in motion. Got the fuse box and changed it though the original problem persisted. Now the same shop is saying it’s a EBCM and possibly when I changed the brakes I must’ve pushed something into the abs module. Even though all I did was changed out the caliper piston since before the issue. Since the changed the car had no issues. Once the lights were showing on the dash is when I changed the rotors and brakes due to the warped rotors. U codes are being thrown:
EBCM
0151-00
0077-00
0131-00
PSCM
0077-00
0415-71
RDCCM
0151-00
0121-00
0077-00
0452-72
Thursday, August 28th, 2025 AT 6:18 AM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
The fact that is happens after the rain it can be you have an issue with the CAN BUS system, did you see any wiring connectors that are damaged, does the car have water inside on the carpets? I would disconnect the battery and looks for corrosion at the BCM, here is its location. You pushing the brake pad back into the caliper will not cause this problem. More like a large part of the system is down, which can be the fuse panel. I would check all fuses with the ignition on (battery reconnected). Check out the images (below). Please upload pictures or videos in your response
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Friday, August 29th, 2025 AT 4:54 PM
Tiny
GKT656
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I will check the BCM. Can I install a unprogrammed EBCM and drive said car to get it programmed? Would the car even start?
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Friday, August 29th, 2025 AT 8:27 PM
Tiny
KEN L
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So some say the EBCM is the electronic brake control module other say is it the electronic body control module. They both need to be programmed in, but the brake control module shouldn't keep the car from starting, a bad body control module will.
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Saturday, August 30th, 2025 AT 9:36 AM
Tiny
GKT656
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I mentioned the rainstorm only because I ran through a puddle of water that splashed under the driver side where both the fuse box and EBCM are located. My issue now is I was under the impression that this is a Chevy problem but it looks like it’s turning out to be a regular car problem. The dealer first mention the fuse box after I swapped it out and still had the issue. Then they said the EBCM needs to be changed. I’m able to activate the bleed valve in the EBCM so I’m wondering if my EBCM is bad. They said they tried programming it but couldn’t. The cabin never got wet. Also could sediment from the piston being pushed get stuck in one of the solenoid values which in turn is causing all my problems which means an ABS flush can fix it?
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Saturday, August 30th, 2025 AT 3:57 PM
Tiny
KEN L
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The bake control module valve getting stuck I don't think will cause this error. Also you are right, if you hold the valve open using a scanner while flashing the system if anything is stuck in the valve is should flush it out. Have you tried a hard system reboot? Please follow this video to see if it resets this issue.

https://www.youtube.com/watch?v=INiDRO5A5MY&t

Please go over this guide and get back to us. Also, I would when the battery is disconnected unplug the Body control module and check the pins for corrosion. Let us know how it goes
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Saturday, August 30th, 2025 AT 5:50 PM
Tiny
GKT656
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I did that the other day and when I restarted the lights and everything came on like it had before. I will attempt again and this time disconnect the body control module. Body control module is not throwing any codes. At this point I will try anything.
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Sunday, August 31st, 2025 AT 8:52 AM
Tiny
KEN L
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Like I say this is a CAN BAS issue so I would look at the electrical connectors at the modules. Let try clearing the codes and then without cranking the engine over just have the key on run the codes again, this will give us the most prevalent codes. Please get back to me ;)
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Sunday, August 31st, 2025 AT 10:10 AM

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