# Service bulletin PIP5085

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: 10112733
- Published by NHTSA: 2017\-08\-15
- Manufacturer's number: PIP5085
- Manufacturer's date: 2013\-01\-22
- NHTSA component: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM

## NHTSA's summary

This Preliminary Information communication provides information to the technician that engineering is asking for additional information if SI diagnosis leads to replacement of the Indirect Fuel Injector for a P0420 Diagnostic Trouble Code. Technician should follow published Service Information diagnostics for Diagnostic Trouble Code P0420. Technician will need to also gather quantity of fuel flow measured, engine hours, type of vehicle, and estimated percentage of time the vehicle spends at idle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10112733-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10112733-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system, Fuel injection

## Trouble codes named

P0420

## Vehicles listed

- 2010 to 2013 CHEVROLET EXPRESS
- 2011 to 2013 CHEVROLET SILVERADO
- 2010 to 2013 GMC SAVANA
- 2011 to 2013 GMC SIERRA
- 2011 to 2013 GMC SIERRA DENALI

## Other bulletins for the same vehicles and component

- [04\-06\-04\-051F](/bulletins/10209734.md), 2022-04-05, Service bulletin: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT:MECHANICAL. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- [16NA383](/bulletins/10176607.md), 2020-06-22, Service bulletin: ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build\-up.
- [16NA383](/bulletins/10171878.md), 2020-03-02, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build\-up.
- [16\-NA\-383](/bulletins/10137635.md), 2018-05-21, Service bulletin: EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up.
- [04\-06\-04\-051E](/bulletins/10137621.md), 2018-05-21, Service bulletin: EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin provides information for maintenance cleaning of the fuel injectors.
- [04\-06\-04\-051D](/bulletins/10137620.md), 2018-05-21, Service bulletin: EQUIPMENT; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin provides information for maintenance cleaning of the fuel injectors.
- [040604051D](/bulletins/10135240.md), 2018-05-07, Service bulletin: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. This informational bulletin provides information for maintenance cleaning of the fuel injectors.
- [04\-06\-04\-051D](/bulletins/10113566.md), 2017-08-15, Service bulletin: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. This informational bulletin provides information for maintenance cleaning of the fuel injectors.
- [PIP5085C](/bulletins/10112228.md), 2017-08-15, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a Malfunction Indicator Lamp on. Technician may find a P0420, P24A0 and/or P2463 set. Technician should use published Service Information diagnostics for the Diagnostic Trouble Code. If the diagnostic leads to diagnosis or replacement of the Q57 Indirect Exhaust After treatment Fuel Injector, document all of your test results.
- [PIP4949D](/bulletins/10112157.md), 2017-08-15, Service bulletin: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE. This Preliminary Information communication provides information to the technician about vehicles that have a hard start or a no start. Technician may find Diagnostic Trouble Code DTCs P0087, P0088, P0191 or P128E. Technician will need to follow all Service Information diagnose for the Diagnostic Trouble Code. If the current Service Information diagnostic has led to Fuel Injection Pump replacement, Fuel Pressure Regulator 1 must be inspected for magnetic metal debris. If there is a questionable amount of magnetic debris found on Pressure Regulator 1 remove the Fuel Rail Pressure Sensor and/or Fuel Pressure Regulator 2 to inspect for magnetic metal debris. If technician will need to replace all of the parts listed under the latest version of PIP4949 found in the Service Forms section of Global Connect if debris is found. Clean and flush all fuel chassis lines, filter pipes, and other engine mounted fuel system pipes not replaced. Also the fuel filter housing must be cleaned with a new fuel filter installed. Then the fuel tank and fuel sender must be cleaned and flushed.

JSON: [/v1/bulletins/10112733](/v1/bulletins/10112733)

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