PIP5025D

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIP5025D
January, 2013
PRELIMINARY INFORMATION
Subject:
Excessive Oil Consumption - Install Updated ECM Calibration and Perform Oil
Consumption Test
Models:
2010-2011 Buick Lacrosse
2011 Buick Regal
2010-2011 Chevrolet Equinox
2010-2011 GMC Terrain
with 2.4L Engine (RPO LAF)
This PI was superseded to update recommendations/instructions. Please discard PIP5025C.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may complain of excessive oil consumption and/or that they have to add oil between oil changes.
Recommendation/Instructions
If this complaint is encountered, perform an oil consumption test by following the latest version of bulletin
01-06-01-011. Before starting the oil consumption test, also reprogram the ECM with the latest TIS2web calibrations
to adjust the engine oil life monitor to a maximum of 7,500 miles (12,070 KM).
Important: When checking the oil level with the oil dipstick design shown below, please note that the oil volume per
notch is not linear due to the shape of the block. The upper notches (relative to the top of the handle) equal .24 quart
(.227 L) between each notch while the lower notches only equal .14 quart (.132 L) between each notch. As a result,
no oil will appear on the dipstick if it is low on oil by approximately 1.25 quarts (1.18L) or more. When determining the
oil consumption rate, the oil volume added to return it to the starting location is the total amount of oil consumed. The
consumption rate must be documented on a repair order.
2285738
If the oil consumption test indicates that the rate of consumption is greater than 1 quart (.946 L) of oil every 2,000
miles (3,200 KM), perform the Oil Consumption Diagnosis as outlined in SI and repair as necessary.
If your diagnosis identifies a concern that requires engine replacement (cylinder wall damage, etc.) or if it does not
isolate the cause of excessive oil consumption, please note the oil consumption rate that has been verified, the date
that the ECM was reprogrammed, and the results of your diagnosis. Dealers who are required to contact PQC for
engine replacement authorization should call PQC with the engine unit numbers and engine replacement cost as
outlined in the latest version of 02-07-30-029 to determine if engine replacement is required. The engine unit
numbers should be located on a white bar code sticker on the front of the engine and/or stamped near the engine oil
filter.
Important: If engine replacement is required, it may or may not be necessary to swap/replace the intake camshaft
and intake camshaft actuator sprocket depending on the engine part number received for 2010 models. As a result,
it is suggested to review the latest version of PI0865 and/or follow the related instruction sheet that should be
attached to the engine crate to determine if additional parts need to be installed or swapped from the original engine
to the replacement engine before it is installed.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
J6350
Engine Control Module Reprogramming with SPS
Use Published Labor
Operation Time
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.