Fuel System - MIL ON/DTC P0087/No Power/Runs Rough: Overview
TECHNICALBulletin No.: 08-06-04-029C
Date: July 20, 2009
Subject: LBZ, LLY, LMM MIL/SES Light On, DTC P0087- Fuel Rail Pressure (FRP) Too Low, Lack of Performance, No Power, Engine Runs Rough, No Start (Diagnose Fuel System Components)
Models:
2006-2007 Chevrolet Express, Kodiak C4500/C5500 Series, Silverado, Silverado Classic
2006-2007 GMC Savana, Sierra, Sierra Classic, TopKick C4500/C5500 Series
Equipped with 6.6L Duramax (TM) Diesel Engine RPOs LBZ, LLY, LMM
Refer to GMVIS
Attention:
Please check the vehicle repair order history to determine if a replacement fuel injection pump has already been installed for the above symptoms. If the fuel injection pump has been already replaced, then do not install another new fuel injection
pump. The purpose of this bulletin is to aid technicians in the diagnosis and repair of fuel systems components on the Duramax(TM) Diesel Engine.
Supercede:
This bulletin is being revised to advise technicians that all parts are to be returned to the WPC. Please discard Corporate Bulletin Number 08-06-04-029B (Section 06 - Engine/Propulsion System).
Condition
Some customers may comment on an illumination of the MIL/SES with one or more of the following symptoms:
- Lack of Performance
- No Power
- Engine runs rough
- Lack of power
- Vehicle may not start
Upon further investigation, the technician may find DTC P0087- Fuel Rail Pressure (FRP) Too Low stored in the ECM.
Cause
A ceramic high pressure valve ball fracture inside the fuel injection pump may lead to internal pump damage resulting in low fuel rail pressure. This condition may contaminate the common fuel rails and fuel injectors with debris. The fuel injection pump may operate, but with reduced output flow.
A high pressure valve fracture may cause the fuel injection pump cup plug (1) to come out, resulting in a no start condition and a possible fluid leak.
Bulletin Diagnostic Tips
There are several bulletin resources available in the Electronic Service Information System (SI) that can provide the technician with information on diagnosis and repair of the fuel system. Some of the bulletins available in SI include:
- Information on Diesel Fuel Additives (Bulletin #03-06-04-017)
- Information on Injector Bore Cleaning Kit (Bulletin #05-06-04-067)
- Information on Servicing Fuel Injectors to Avoid Contamination (Bulletin #03-06-04-036)
Parts Information
Important
Some vehicles may require the removal of the turbo when replacing the fuel injection pump.
Warranty Information
Important
Make sure you clock in and record the actual repair order clock time when completing this warranty repair. The old fuel injection pump must include a print out of the Engine Data 1 snapshot along with the data line graph showing the desired fuel rail pressures versus the actual fuel rail pressures. If proper documentation is not found with the old parts or you do not show actual repair order clock time, your warranty claim may be denied.
For vehicles repaired under warranty, use:
Fuel System Components Check List for Warranty
This labor operation is on 100% return to the Warranty Parts Center (WPC). DO NOT return any parts associated with J7811 to core. You must return the pump, two rails and injectors when you receive the WPC request. All documentation as outlined above must be returned with the parts. For example: RO with tech notes, snap shot and the graph of the pump.
Disclaimer