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Ipc u1000 error code ipc u1000

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I have a 2003 GMC Yukon XL Denali that today all of the gauges went to zero and Odometer is out. The truck starts and drive Great.... What can cause this problem?


Only the gauges don't work ? All the warning lights come on when you turn on the key ? ABS , check engine, air bag etc... Have you had the vehicle to a repair shop to have the vehicle checked for DTC'S - diagnostic trouble codes stored in the instrument cluster ? There is a microprocessor inside the instrument cluster an can store DTC'S which have nothing to do with the check engine light . The gauges are controlled by that microprocessor based on information from the PCM ,sent on the class 2 serial data network .

Indicators and Warning Messages
Refer to Indicator/Warning Message Description and Operation .
Engine Coolant Temperature Gage
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to 75°C (160°F) or below when:
• The PCM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of class 2 communication with the PCM.
Engine Oil Pressure Gage
The instrument panel cluster (IPC) displays the engine oil pressure as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the engine oil pressure. The engine oil pressure gage defaults to 0 kPa (0 psi) or below if:
• The PCM detects a malfunction in the engine oil pressure sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the fuel level percent. The fuel gage defaults to empty if:
• The PCM detects a malfunction in the fuel level sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.
Reviewing the fuel system description will further explain how the system functions. Refer to:
• Fuel System Description in Engine Controls - 4.8L, 5.3L and 6.0L
• Fuel System Description in Engine Controls - 8.1L

There are also U codes , communication failure's 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 audio broadcast (DAB) module
• 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 HVAC control module-rear auxilliary
• 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 suspension control module
• 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

Your best bet would be to take it to a qualified repair shop .

Mar 23, 2017 | GMC Cars & Trucks

1 Answer

Error Codes U1017, U1301, U1000 and B0092


Hi,all the U-codes,are network communication codes.
B0-code is genetic code.
Sorry I cant help you anymore than that.

Nov 23, 2015 | 2007 Saturn Ion

1 Answer

I have a Pontiac grand am 2000 I'm getting codes u1000 and u1064


U1000 means modules on the data line have stopped seeing communication with a module. U1064 is a communication code for the BCM. It may be faulty or not communicating for some reason. If it has been changed it needs to be programmed.

Sep 03, 2015 | Pontiac Cars & Trucks

1 Answer

CODE U1000 and CODE P1626


you need obd scanner to reset and see if comes back- if it does come back with code , post again

Mar 30, 2014 | 2008 Chevrolet Suburban

1 Answer

Most of the warning lights and fuel gauge does not operate when the ignition switch is turned to on.


Given the complexity of your vehicle , all the control modules , serial data communication network. Having the vehicle scanned for DTC'S - diagnostic trouble codes , not a code reader or at a auto parts store . A professional type tool is need to pull codes from BCM - body computer , Instrument cluster .

Fuel Gage
The IPC displays the fuel level as determined by the PCM. The body control module (BCM) receives a class 2 message from the PCM indicating the fuel level percent. The BCM converts the fuel level percent into a percent gage deflection. The IPC receives a message from the BCM via the serial peripheral interface (SPI) indicating the requested gage position. The fuel gage defaults to E (empty) if:
• The PCM detects a malfunction in the fuel level sensor circuit.
• The BCM detects a loss of class 2 communications with the PCM.
• The IPC detects a loss of SPI communications with the BCM.
When the fuel level is less than a pre-determined value, the low fuel indicator illuminates.

Could have U- codes , communication network problems .

DTC U1000 and U1255

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 ID number of the module which sent the message for State of Health monitoring, Node Alive messages. 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 ID number with at least one critical parameter within about 5.5 seconds of beginning serial data communication, DTC U1000 or U1255 is set. When more than one critical parameter does not have an ID number associated with it, the DTC will only be reported once.
The table below list the modules on the Class 2 Serial Data Circuit that will set a U1000 or U1255 and should be actively communicating the previously described messages on the Class 2 Serial Data Circuit.

Mar 08, 2017 | 2003 Chevrolet Malibu

1 Answer

Diagnostic code u1000


U1000 SCP (J1850) Invalid or Missing Data for Primary Id

Jul 30, 2012 | 2009 Chevrolet Malibu

1 Answer

2006 CHEV TRUCK PRNDL DISPLAY BLANK


its in your cluster, most likely the gauge its self

Jan 28, 2009 | 2006 Chevrolet Silverado 3500

2 Answers

Engine codes


sometimes coming data,but the every error comunication,for the scannner
rpm up and down same the lightgauge,low high,codes u 1001 1000

Jan 15, 2009 | 2002 Nissan Altima

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