Duramax Diesels With DTC P009E - keywords 6.6 calibration code connector diesel ECM engine fuel injection injector LMM MIL module PCM pump rail relief SES valve
| Subject: | Duramax Diesels with DTC P009E |
| Models: | 2007-2008 Chevrolet Express, Kodiak, Silverado |
| 2007-2008 GMC Savana, Sierra, Topkick |
| Vehicles equipped with the 6.6 Duramax Diesel Engine RPO code LMM |
This PI was superseded to advise dealer's calibrations are now available for all models. Before this release the GMT560s had been omitted. Please discard PIP4105G.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
A dealer may encounter a customer vehicle with DTC P009E for Fuel Rail Pressure Relief Valve Performance setting intermittently.
Recommendation/Instructions:
Complete the current SI diagnostics for any symptoms or trouble codes set. P009E will set if the ECM interprets a rapid loss of fuel rail pressure.
If the current SI diagnostics for P009E are inconclusive, there has been an updated calibration released to address intermittent P009E.
Reprogram the ECM with the latest calibration and evaluate the concern.
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.
