Buick power steering leak

This bulletin refers to a possible power steering fluid leak at the inlet/outlet pipe at the steering gear connection. Buick models affected include 2011-2012 Regal built after Dec. 31, 2010, and 2011-2012 LaCrosse equipped with engine RPO LLT and built after Dec. 31, 2010.

Proceed with this bulletin only if the customer has commented about this concern and the PIE number is listed in the Global Warranty management/Investigate History link (GWM/IVH). If the customer has not commented about this condition or the EI does not show in GWM/IVH, disregard the PI and proceed with diagnostics found in published service information. This is not a recall. Refer to Service Bulletin 04-00-89-053D for more details on the use of Engineering Information Pis.

Some customers may comment that power steering fluid is leaking from the vehicle. Upon inspection the technician may find power steering fluid in the area round the steering gear where the power steering inlet and outlet pipes connect to the gear housing.

GM is attempting to determine the root cause of the leak. Engineering has a need to gather information on vehicles prior to repair that may exhibit this condition. As a result, this information will be used to “root cause” the customer’s concern and develop a field fix.

CAUTION: Do not clean using brake cleaner or other reactive solvents as these solvents can damage rubber gaskets, seals and bushings.

Use the following steps to identify the source of the leak. Do not perform any corrective measures before talking with one of the engineers listed below.

  1. Use a clean towel or rag to completely clean off all residual fluid from the power steering components in the areas shown in the accompanying illustration.
  2. Start the vehicle and warm the power steering system by turning to the left steering stop and to the right steering stop 10 times, with the weight of the vehicle on the front tires.
  3. Turn the engine off.
  4. Shine a light on the area where residual fluid has accumulated. Identify the sources of the leaks.
  5. Using a paint pen, mark the area that is leaking.
  6. Call one of the engineers listed here with the results of the leak test.


Erika Stephens………………………. (586) 596-0548

Fred Townsend……………………… (248) 830-8758

Please include the following information if leaving a message:

- Technician name

- Dealer name and phone number

- Complete VIN and repair order (R.O.) number

On the repair order, document the date and time the call was placed (even if the engineer was not reached). If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI.

Clean and inspect the area indicated by the red arrow.
<p>Clean and inspect the area indicated by the red arrow.</p>
When discussing the condition with an engineer, refer to this illustration during the phone conversation.
<p>When discussing the condition with an engineer, refer to this illustration during the phone conversation.</p>

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