PI1482

Bulletin No.: PI1482
Date: Jun-2015
Subject:
Engine Mechanical Noise from Front of Engine and/or Low Oil Pressure, DTC P06DD or P06DE Set, “Oil
Pressure Low” Message On
Models:
2014-2015 Buick Regal
2013-2015 Cadillac ATS Models
2014-2015 Cadillac CTS Sedan (VIN A)
2013-2015 Chevrolet Malibu
2014-2015 Chevrolet Impala (VIN 1)
Equipped with 2.0L or 2.5L Engines (RPOs LTG, LCV or LKW)
Attention:
This PI also applies to any of the above models that may be Export vehicles.
Condition/Concern
Some customers may comment on a noise coming from the engine compartment.
Technicians may find the noise coming from the timing chain cover or cam cover area and that the noise changes with engine RPM. DTC P06DD or P06DE
may be set and/or an oil pressure message on.
This may be caused by the driven gear on the balancer shaft being cracked or damaged.
Recommendation/Instructions
Technicians should remove the timing chain cover and inspect both gears on the crankshaft and the balance shaft for damage.
If damage is found, replace the balancer shaft, sprockets, balancer shaft chain, oil filter and change the oil. Refer to SI for published replacement procedures.
If no damage is found, refer to SI for further diagnosis.
Parts Information
Part Number
Description
12631922
SHAFT, BALR W/ OIL PUMP (RPO LTG)
12628886
SHAFT, BALR W/ OIL PUMP (RPO LCV/LKW)
12627108
SPROCKET, CR/SHF
12626981
SPROCKET, BALR SHF DRVN
12626983
CHAIN, BAL
12640445
FILTER, OIL
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Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor Operation
Description
Labor Time
4066440
Balancer Replacement
Use Published Labor
Operation Time
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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