NHTSA ID Number: 10246003
Manufacturer Communication Number: PIP4964E
TSB/Document Date: 2023-12-04
Summary
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P2097 or P2099. Technician will need to perform an injector balance or Active Fuel Injector Tester prior to going further. Technician will also need to check for a small leak in the exhaust if published Service Information diagnostics does not lead to a resolution.
Bulletin No.: PIP4964E
Published date: 10/16/2023
Preliminary Information
PIP4964E SES Light With A P2097 Or P2099
Models
Brand:
Model
Years:
Model:
VIN:
Engine:
from to
Transmissions:
Enclave
2009 - 2024
All
All 3.6 LFY, 3.6 LLT, 3.6 LY7
All
LaCrosse 2010 - 2019
All
All 3.0 LF1, 3.0 LFW, 3.6 LFX, 3.6 LLT
All
ATS
2013 - 2019
All
All 3.6 LF4, 3.6 LFX, 3.6 LGX
All
CT4
2022 - 2023
All
All 3.6 LF4
All
CT5
2021 - 2024
All
All 3.0 LGY
All
CT6
2016 - 2020
All
All 3.0 LGW, 3.6 LGX
All
CTS
2004 - 2019
All
All
SRX
2004 - 2016
All
All 2.8 LAU, 3.0 LF1, 3.6 LFX
All
STS
2005 - 2011
All
All 3.6 LY7, 3.6 LLT
All
XT5
2017 - 2024
All
All 3.6 LGX
All
XT6
2020 - 2024
All
All 3.6 LFY
All
XTS
2013 - 2019
All
All 3.6 LF3, 3.6 LFX
All
2010 - 2024
All
All 3.6 LFX, 3.6 LGX, 3.6 LLT
All
Chevrolet
Colorado 2015 - 2022
All
All 3.6 LFX, 3.6 LGZ
All
Chevrolet Equinox
2008 - 2017
All
All 3.0 LF1, 3.0 LFW, 3.6 LFX, 3.6 LLT, 3.6 LY7
All
Chevrolet Impala
2012 - 2020
All
All 3.6 LFX
All
Chevrolet Traverse 2009 - 2023
All
All 3.6 LFY, 3.6 LLT
All
Acadia
2008 - 2024
All
All 3.6 LLT, 3.6 LGX, 3.6 LY7
All
Canyon
2015 - 2022
All
All 3.6 LFX, 3.6 LGZ
All
Terrain
2010 - 2017
All
All 3.0 LF1, 3.0 LFW, 3.6 LFX
All
G8
2008 - 2009
All
All 3.6 LY7
All
Torrent
2008 - 2009
All
All 3.6 LY7
All
Outlook
2009 - 2010
All
All 3.6 LLT
All
Vue
2008 - 2010
All
All 3.6 LY7
All
Chevrolet Camaro
3.0 LF1, 3.0 LFW, 3.6 LF3, 3.6 LFX, 3.6 LGX, 3.6
LLT
All
Supersession Statement
This PI was superseded to update model list. Please discard PIP4964D.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
Some customers may complain of an SES light with no drivability concerns.
The technician will nd a DTC P2097 or P2099 set.
Recommendations / Instructions
Recommendations / Instructions
The most common concerns we have seenhas been related to fuel injectors.
This should be caught on initial diagnosisfor these codes.
Perform injector balance or AFIT testprior to going further.
NOTE: Fuel injector balance test not available on 2009 Acadia, Outlook, Enclave andraverse.
T
If normal SI diagnostics does not leadto a resolution for this code, then look for a small leak in the
exhaust, usually at the outlet to the engine converter
.
This leak will allow air to be pulledinto the exhaust and cause a false lean concern at the post O2
sensor. To diagnose this leak we recommend applying air to the rear of the downstream converter or
to the tail pipe on single systems @ 5psi to 8 psi.
Apply a soapy solution to the gask
et areas and the O2 boss.
Leaks in these areas that will causethe code will be larger bubbles.
Foam leaks are considered normal.
DO NOT APPLY FULL SHOP AIR as converter and engine damage can result.
If available CAC leak tester J-46091-1and adapter can be used with a modification using wire ties to
hold it to the pipe.
Or GE-52250 - Tool For Leak Testing Charge Air Cooler / Turbo System will work also.
If a leak is found in these areas alongwith gasket replacement, filing themating surface of the pipe
is suggested.
If no leaks are found at this point youshould look for a mechanical valvetrain concern such as a
sticking valve, or a lifter follower off the camshaft outof place.
This may or may not cause a misfire.
Warranty Information
The correction for this concern ma
y be one of several repairs described above.
For vehicles repaired under warranty
, please use the appropriate warranty labor operation based on
the original cause in addition to well documented straight 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.
© 2023 General Motors. All Rights Reserved.
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TSB/Document ID: PIP4964E
Replacement Service Bulletin Number:
MFR Communication Date: 2023-10-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FUEL SYSTEM, GASOLINE
MFR Component System:
MFR Component Subsystem:
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