Easy step by step replacement guide for changing an
, configuration may vary but follow the same steps, this article
pertains to many GM ABS brake
Difficulty Scale: 4 of 10
Tools and Supplies Needed
- Replacement ABS Brake Control Module Assembly
- Socket set including torx
- Screw driver set
- Shop towels
- Protective eye wear and gloves
Begin by placing your car on level ground with the emergency brake set and
remove the battery
cable from the negative side of the battery
- Locate and identify the
ABS brake computer module
which is usually under the hood or mounted to the frame rail under the vehicle,
disconnect all electrical connectors.
Step 2 - Next, remove all ABS controller mounting
screws, these bolts may or may not be torx head bolts.
Disconnecting Electrical Connectors
Step 3 - Once all mounting bolts have been removed
gently remove the controller by lifting it straight up from the
ABS valve assembly
Removing ABS Computer Controller Mounting Bolts
Step 4 - After the old module has been removed,
match the old module to the new replacement unit, they should be an identical match.
Removing ABS Computer Control Module
Step 5 - Next, install the new unit, be sure to
clean the mounting surfaces to ensure proper installation.
New ABS Computer Control Module
Step 6 - After the module is securely in place,
reinstall the mounting bolts and tighten in an "X" pattern.
Installing New ABS Computer Control Module
Step 7 - Once all the mounting bolts are tight,
reconnect the remaining wiring connectors and recheck system operation.
Mounting Bolt Tighten Pattern
Reconnecting Electrical Connectors
The ABS controller is responsible for limiting the brake line pressure which
allows a tire or tires that has locked up to start rotating under sever braking
conditions which helps keep the vehicle under control. If the controller fails it
can cause the
to stop working and illuminate the
ABS brake warning
. Most ABS diagnostic systems can be access by the
much like the body or engine control system. Use a
trouble code reader
with ABS code capability to read such codes.
- If the vehicle is equipped with a
system it uses a different ABS computer which are not interchangeable with
non-traction controlled vehicles.
- Always use quality ABS replacement parts.
If further assistance is needed, our certified technicians are ready to
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Article first published 2016-02-05