Additional Information On Bleeding The Brakes – 2011-2016 Cadillac Chevrolet

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Bulletin No.: PIC5423E Published date: 05/6/2019

Preliminary Information

PIC5423E Additional Information On Bleeding The Brakes

Models

Brand: Model: Model Years:

VIN:

from to

Engine: Transmissions:

Cadillac ELR 2014 – 2016 All All
LUU MKA Chevrolet Volt 2011 – 2015
All All LUU MKA

Supersession Statement

This PI was superseded to update Model Years. Please discard PIC5423D.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this
PI.

Condition / Concern

The following is some additional steps that are needed to help perform a successful brake bleed on
the Chevy Volt or the Cadillac ELR.

The braking system is unlike most traditional hydraulic brake systems.

It is very important for proper brake system performance to follow the brake bleeding procedure
exactly. Air trapped in the brake system will cause performance problems and DTCs without the
symptoms of a spongy or low brake pedal.

If you miss a step in the brake bleed procedure, you must start over at step 1 without exception.

Recommendations / Instructions

1. Install a battery charger on the vehicle to maintain battery voltage.

2. Use a pressure bleeder that is capable of delivering 30 psi for the entire bleed procedure.
Failure to provide a constant 30 psi will cause air to be trapped in the brake system and may cause
brake performance problems or DTCs to occur. Tool J-29532-B has been tested extensively on this
application and has proven to provide the necessary pressure and volume of brake fluid.

NOTE: Vacuum bleeding and other brake bleeding tools such as a brake flush machine are NOT
acceptable for this procedure.

NOTE: The dealership must use a J-29532-B pressure bleeder or a diaphragm type (ball bleeder)
pressure bleeder along with the J 35589-A Brake Pressure Bleeder Adapter in order to perform the
hybrid brake system bleed procedure. A new or replacement J-29532-B can be ordered by calling
1-800-468-6657. Once dialed, callers should select option 3 to get to tool ordering.

3) Please don’t attempt to use the manual bleed procedure as this will not properly bleed all the
air from the system.

4) When performing the brake bleed, it may help to put some Teflon tape on the bleed

screws to prevent unwanted air from going into the brake system through a loose brake

bleeder screw.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition
exhibited is resolved without completing every step, the remaining steps do not need to be
performed.

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