# Service bulletin SB\-09\-06\-04\-028B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10037141
- Published by NHTSA: 2011\-05\-10
- Manufacturer's number: SB\-09\-06\-04\-028B
- Manufacturer's date: 2011\-04\-01
- Replaces: SB\-09\-06\-04\-028C
- NHTSA component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP

## NHTSA's summary

GM: FUEL TANK MAY BE HARD TO FILL. MALFUNCTION LIGHT MAY BE ON. THERE MAY BE FOUR DIFFERENT FAULT CODES PRESENT. \*RM UPDATED ON 6/30//2011. \*KB

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Fuel system, Fuel tank

## Vehicles listed

- 2007 to 2010 CADILLAC ESCALADE
- 2007 to 2010 CADILLAC ESCALADE ESV
- 2007 to 2010 CADILLAC ESCALADE EXT
- 2007 to 2010 CHEVROLET AVALANCHE
- 2007 to 2010 CHEVROLET SUBURBAN 1500
- 2007 to 2010 CHEVROLET TAHOE
- 2007 to 2010 GMC YUKON
- 2007 to 2010 GMC YUKON DENALI
- 2007 to 2010 GMC YUKON DENALI XL
- 2007 to 2010 GMC YUKON XL 1500

## Other bulletins for the same vehicles and component

- [PIT4943D](/bulletins/10114954.md), 2017-08-15, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442 has been verified do not disturb any of the fuel system components. The technician now can use the scan tool to close the Evaporative Emissions System. If possible change the tank pressure sensor units from inch\_H2O to milimeter\_Hg for better resolution. Now the vehicle can be stared to monitor the tank pressure sensor output value for approximately two minutes. If the tank pressure sensor value does change, pressurize the fuel tank side of the purge solenoid with the GE 41413\-A / J 41413\-A and the necessary adaptors. Now add smoke and allow pressure to stabilize for 2 minutes. If smoke is allowed to pass through the purge solenoid, replace the purge solenoid. If the tank pressure sensor value does not change, then install CH\-48096 adaptor between the purge line from the canister and the purge solenoid. With the Evaporative Emissions System closed, pressurize the system through the CH\-48096 adaptor and allow the system to completely stabilize, by observing the Press / Vac Gauge for a minimum of 5 minutes. Now add smoke to the system with GE 41413\-A / J 41413\-A after system stabilization. Now inspect the purge solenoid, engine side, fuel cap, canister vent solenoid filter and any line quick connects. When the leak is unable to be located, test under a vacuum condition. his type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the Evaporative Emissions System and then observe the FTP sensor parameter for vacuum decay.
- [PIP4786A](/bulletins/10114456.md), 2017-08-15, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. This Preliminary Information communication provides information to the technician about vehicles that may have low oil pressure message. Technician may also find a Diagnostic Trouble Code P0521 in the Engine Control Module. Technician should follow all published Service Information diagnosis. When using a scan tool if the oil pressure is low but the oil pressure at the oil filter housing is correct, technician should inspect the Valve Lifter Oil Filter for debris/sludge that could be restricting oil flow to the oil pressure sensor. Technician should remove the Valve Lifter Oil Filter and clean it. If the Valve Lifter Oil Filter cannot be cleaned replace it.
- [PIT5208A](/bulletins/10112023.md), 2017-08-15, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. This Preliminary Information communication provides information to the technician about vehicles that after refueling the fuel gauge will show empty. Technician may find Diagnostic Trouble Code P2636 has set. Technician should be advised that the vehicle is being refueled with the engine running or ignition on.
- [PIE\-0047](/bulletins/10033364.md), 2010-08-16, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY. GENERAL MOTORS: ENGINEERING INFORMATION\-CHEMICAL DAMAGE ON INNER SURFACES OF FUEL TANK. SOME CUSTOMERS MAY COMMENT ON POOR PERFORMANCE, DECREASED ACCELERATION AND/OR AN INOPERATIVE FUEL GAUGE. NO MODELS LISTED EXCEPT SATURN AND HUMMERS; INCLUDES ALL PASSENGER CARS AND LIGHT DUTY TRUCKS. \*PE UPDATED 5/9/11. \*PE

JSON: [/v1/bulletins/10037141](/v1/bulletins/10037141)

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