PIT-4574-B

SB-10026696-6346
File In Section:
Bulletin No.:
Date:
Service Bulletin
PIT4574D
March, 2011
PRELIMINARY INFORMATION
Subject:
Crank No Start After Parking On An Incline When The Fuel Level Is Low
Models:
2008-2011 Buick Enclave
2011 Chevrolet Traverse
2007-2011 GMC Acadia
2007-2009 Saturn Outlook
This PI was superseded to update recommended field and model years. Please discard
PIT4574C.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an intermittent crank no start, or start and then stall when the fuel level is low
(typically less than 1/8th tank) and the vehicle is parked for an extended period of time (more than 12 Hours) on an
incline.
The design of the fuel tank will allow fuel to migrate to the end of the tank when the vehicle is parked on an incline.
This may prevent the fuel system from drawing fuel out of the tank because the fuel pick up is no longer submerged
in fuel. If the fuel pump module reservoir check valve allows fuel to leak out of the reservoir, insufficient fuel will
be available to start the vehicle or allow the engine to run following a start.
If this happens while the vehicle is parked on an incline with a low fuel level condition, the fuel may not be drawn
into the fuel system. If fuel is added to the tank or the vehicle is rolled to a flat surface, the vehicle will start because
the fuel module is now submerged in fuel.
Recommendation/Instructions:
No parts should be replaced at this time, an Engineering fix is being developed. Until the final fix is available, advise
the customer that if they will be parking on an incline to maintain at least 1/4 tank of fuel in the vehicle.
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.
Copyright 2011 General Motors. All Rights Reserved.

SB-10026696-7096
File in Section:
Service Bulletin
Bulletin No.:
Date:
PIT4574G
February, 2012
PRELIMINARY INFORMATION
Subject:
Crank No Start After Parking On An Incline When The Fuel Level Is Low
Models:
2008 - 2012 Buick Enclave
2009 - 2012 Chevrolet Traverse
2007 - 2012 GMC Acadia
2007 - 2010 Saturn Outlook
This PI was superseded to update recommended field. Please discard PIT4574F.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an intermittent crank no start, or start and then stall when the fuel level is low
(typically less than 1/8th tank) and the vehicle is parked for an extended period of time (more than 12 Hours) on an
incline.
The design of the fuel tank will allow fuel to migrate to the end of the tank when the vehicle is parked on an incline.
This may prevent the fuel system from drawing fuel out of the tank because the fuel pick up is no longer submerged
in fuel. If the fuel pump module reservoir check valve allows fuel to leak out of the reservoir, insufficient fuel will be
available to start the vehicle or allow the engine to run following a start.
If this happens while the vehicle is parked on an incline with a low fuel level condition, the fuel may not be drawn into
the fuel system. If fuel is added to the tank or the vehicle is rolled to a flat surface, the vehicle will start because the
fuel module is now submerged in fuel.
Recommendation/Instructions:
For 2009-2012 Model year replace the fuel pump assembly with P/N 22833390.
Follow service information for Fuel Tank Module Replacement. The fuel level sensor will need to be transferred to
the new pump.
For 2007-2008 Model year replace the fuel pump assembly with P/N 19259370.
Follow service information for Fuel Tank Module Replacement. The fuel level sensor will need to be transferred to
the new pump.
Note: Based on the design of the tank it should also be noted that if the vehicle is left running on an incline with low
fuel level, the vehicle will run out of fuel when the fuel tank module reservoir becomes empty. The reservoir will run
out of fuel after 16 minutes of run time, or 1 and 1/2 remote start button pushes.
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.

SB-10026696-7736

SB-10026696-7868
File in Section:
Service Bulletin
Bulletin No.:
Date:
PIT4574F
February, 2012
PRELIMINARY INFORMATION
Subject:
Crank No Start After Parking On An Incline When The Fuel Level Is Low
Models:
2008 - 2012 Buick Enclave
2009 - 2012 Chevrolet Traverse
2007 - 2012 GMC Acadia
2007 - 2010 Saturn Outlook
This PI was superseded to update recommended field with correct part numbers.
Please discard PIT4574E.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an intermittent crank no start, or start and then stall when the fuel level is low
(typically less than 1/8th tank) and the vehicle are parked for an extended period of time (more than 12 Hours) on an
incline.
The design of the fuel tank will allow fuel to migrate to the end of the tank when the vehicle is parked on an incline.
This may prevent the fuel system from drawing fuel out of the tank because the fuel pick up is no longer submerged
in fuel. If the fuel pump module reservoir check valve allows fuel to leak out of the reservoir, insufficient fuel will be
available to start the vehicle or allow the engine to run following a start.
If this happens while the vehicle is parked on an incline with a low fuel level condition, the fuel may not be drawn into
the fuel system. If fuel is added to the tank or the vehicle is rolled to a flat surface, the vehicle will start because the
fuel module is now submerged in fuel.
Recommendation/Instructions:
For 2009-2012 Model year replace the fuel pump assembly with P/N 22833390.
Follow service information for Fuel Tank Module Replacement. The fuel level sensor will need to be transferred to
the new pump.
For 2007-2008 Model year replace the fuel pump assembly with P/N 19259370.
Follow service information for Fuel Tank Module Replacement. The fuel level sensor will need to be transferred to
the new pump.
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.

SB-10026696-4325
File In Section:
Bulletin No.:
Date:
Service Bulletin
PIT4574B
October, 2008
PRELIMINARY INFORMATION
Subject:
Crank No Start After Parking On An Incline When The Fuel Level Is Low
Models:
2008-2009 Buick Enclave
2009 Chevrolet Traverse
2007-2009 GMC Acadia
2007-2009 Saturn Outlook
This PI was superceded to add 2009 Chevrolet Traverse. Please discard PIT4574A.
The following diagnosis might be helpful if the vehicle
exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an intermittent crank
no start, or start and then stall when the fuel level is
low (typically less than 1/8th tank) and the vehicle is
parked for an extended period of time (more than 12
Hours) on an incline. The design of the fuel tank will
allow fuel to migrate to the end of the tank when the
vehicle is parked on an incline, not allowing the fuel
system to draw fuel from the tank because the fuel pick
up is no longer submerged in fuel. If the fuel pump
module reservoir check valve allows fuel to leak out of
the reservoir, insufficient fuel will be available to start
the vehicle or allow the engine to run following a start.
Since the fuel has leaked out of the fuel module
reservoir, and the fuel is not available at the fuel pump
pickup in the tank, no fuel will be available to be drawn
into the fuel system. If fuel is added to the tank or the
vehicle is rolled to a flat surface, the vehicle will start
because the fuel module is now submerged in fuel.
Recommendation/Instructions:
Do not make any repairs for this concern at this time.
Engineering is aware of the concern and is working
on a fix.
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.
Copyright 2008 General Motors Corporation. All Rights Reserved.

SB-10026696-8207
File in Section:
Service Bulletin
Bulletin No.:
Date:
PIT4574E
November, 2011
PRELIMINARY INFORMATION
Subject:
Crank No Start After Parking On An Incline When The Fuel Level Is Low
Models:
2008-2012 Buick Enclave
2009-2012 Chevrolet Traverse
2007-2012 GMC Acadia
2007-2010 Saturn Outlook
This PI was superseded to update model years an part numbers. Please discard PIT4574D.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment of an intermittent crank no start, or start and then stall when the fuel level is low
(typically less than 1/8th tank) and the vehicle is parked for an extended period of time (more than 12 Hours) on an
incline.
The design of the fuel tank will allow fuel to migrate to the end of the tank when the vehicle is parked on an incline.
This may prevent the fuel system from drawing fuel out of the tank because the fuel pick up is no longer submerged
in fuel. If the fuel pump module reservoir check valve allows fuel to leak out of the reservoir, insufficient fuel will be
available to start the vehicle or allow the engine to run following a start.
If this happens while the vehicle is parked on an incline with a low fuel level condition, the fuel may not be drawn into
the fuel system. If fuel is added to the tank or the vehicle is rolled to a flat surface, the vehicle will start because the
fuel module is now submerged in fuel.
Recommendation/Instructions:
For 2009-2012 Model year replace the fuel pump assembly with P/N 22833390.
Follow service information for Fuel Tank Module Replacement. The fuel level sensor will need to be transferred to
the new pump.
For 2007-2008
No parts should be replaced at this time, an Engineering fix is being developed. Until the final fix is available, advise
the customer that if they will be parking on an incline to maintain at least 1/4 tank of fuel in the vehicle.
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.