Question about 2003 Chevrolet Silverado 2500HD

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CHEVY SILVERADO 2500HD DURAMAX DIESEL

I HAVE START BUT ENGINE NOT RUN,I HAVE 2 CODES P1093,U1024

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  • Colin Stickland
    Colin Stickland May 11, 2010

    common rail injection system or pump?'

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Replaced fuel pump on 2003 duramx diesel, but there's no power to it?

Posted on Jan 12, 2010

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Beside me fuel falls into oil .Has changed the ijectors, all gasket , not help.Pump has changed too. But problem remained

Posted on Jul 24, 2009

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DTC P1093
Fuel Rail Pressure Low During Power Enrichment



The engine control module (ECM) uses the fuel rail pressure (FRP) sensor to determine fuel pressure to the fuel injectors. This is then compared to the calculated target fuel pressure as determined by the ECM. The ECM adjusts the FRP by modulating the duty cycle of the control driver of the fuel pressure regulator. Injector pulse duration is determined by the measured rail pressure and the target injection fuel into each cylinder. If a sensor circuit malfunction is detected, or the commanded fuel injection pump flow is not within the proper range for a given engine load and speed, DTCs will be set.

DTC U1000 and U1255 Circuit Description Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within about five seconds of beginning serial data communication, DTC U1000 or U1255 is set. When more than one critical parameter does not have an identification number associated with it, the DTC will only be reported once. The class 2 serial data line on this vehicle is a ring/star configuration. The following modules communicate on the class 2 serial data line:
• The body control module (BCM) • The digital radio reciever • The driver door module (DDM) • The electronic brake control module (EBCM) • The front passenger door module (FPDM) • The HVAC control module • The inflatable restraint sensing and diagnostic module (SDM) • The instrument panel cluster (IPC) • The memory seat module (MSM) • The powertrain control module (PCM) • The radio • The radio amplifier • The rear seat audio (RSA) controller • The rear seat entertainment (RSE) assembly w/U42 • The rear wheel steering control module • The remote playback device-CD player w/U1S • The transfer case shift control module • The transmission control module (TCM) w/Allison transmission • The theft deterrent control module • The vehicle communication interface module (VCIM) w/UE1

Posted on Dec 09, 2008

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TENGO UN PROBLEMA CON EL FILTRO DE ESCAPE DE LA SILVERADO 2007

Posted on Jun 03, 2009

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Sounds like the fprv is stuck open.

Posted on Oct 31, 2014

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Check the oil and see if it smells like diesel. Sounds like an injector stuck open.
The LB7 trucks have injector warranty extended to 200k, so I would think about calling the dealer.

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I had tha same problem it was the high pres. fuil pump. mine was 2000 rpms and 25 to 30 mile an hr was all i could get out of mine. hope this help you out.

Apr 20, 2009 | 2005 Chevrolet Silverado 2500HD 2WD

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