PIP5025E

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIP5025E
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This PI was superseded to update recommendation field. Please discard PIP5025D.
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, 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), inspect for any obvious oil leaks that may
explain the oil consumption complaint, and repair as necessary.
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.
3263739
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), note the oil consumption rate, the date that the ECM was reprogrammed, and any repairs/
diagnosis that you have performed. Dealers who are required to contact PQC for engine replacement authorization
should call PQC with this PI number, 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 on 2010 models depending on the engine part number received. 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. To complete the repairs, ensure that the latest ECM calibrations
have been installed to adjust the engine oil life monitor to a maximum of 7,500 miles (12,070 KM) as well.
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.