I don’t see how I could adjust the parking brake nor should I have to. I purchased these being told they were a direct replacement.
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That's like saying you shouldn't have to push the pads/pistons back into the caliper to install the rotors. It's a wear item. Sometimes adjustments need to be made. Does your parking brake work properly? Found this procedure to release and reset tension with a search. Maybe it will help?
Parking Brake Cable Adjuster Disabling (Electric Park Brake)
The park brake cable tension is controlled by the electronic park brake (EPB) module. Tension can be fully released from the park brake cables to allow for service of the park brake system.
Without Scan Tool - Optional Method
1. Block the drive wheels.
2. Turn the ignition switch to the ON/RUN position with the engine OFF.
3. Place the automatic transmission in PARK or manual transmission in NEUTRAL, as equipped.
4. Press and hold down the electronic park brake (EPB) switch approximately 5 seconds.
5. Observe the PARK BRAKE lamp on the instrument cluster.
6. When the PARK BRAKE lamp flashes, release then immediately press and release the EPB switch.
The parking brake cable tension is fully released.
Parking Brake Cable Adjuster Enabling (Electric Park Brake)
The park brake cable tension is controlled by the electronic park brake (EPB) module. Cable tension needs to be set and the EPB module needs to be calibrated following the cable tension disabling procedure. Perform one of the following two methods to fully restore cable tension.
Without Scan Tool - Optional Method
1. Block the drive wheels.
2. Turn the ignition switch to the ON/RUN position with the engine OFF.
3. Apply the brake pedal.
4. Place the automatic transmission in PARK or manual transmission in NEUTRAL, as equipped.
5. Momentarily lift then release the EPB switch to apply the EPB.
6. Momentarily press down then release the EPB switch to release the EPB.
7. Repeat step 5 and 6 to cycle the EPB on then off an additional 4 times.
8. The EPB module will be calibrated and proper tension will be applied to the parking brake cables.
Found here for reference-
Park Brake not Holding