Question about 2002 Chevrolet Silverado 2500HD

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02 chevy duramax dtc# U1000 what does this code mean

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: U1000

it is a communication error with the ecm from the ignition switch here is the code description

GM Number U1000

Type Network - Manufacturer Controlled DTC - Manufacturer Controlled

Description Class 2 Communication Malfunction Conditions
Cause
DTC B1327, U1300, U1301 and U1305 not current (any particular device on the Class 2 serial data circuit will support some subset of these codes), the ignition switch position requires serial data communication to occur, then at least one operating parameter has not been associated with an identification number within 5 seconds after beginning serial data communication (a default value is used)

Posted on Nov 14, 2008

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  • 89 Answers

SOURCE: 1997 ford powerstroke DTC codes

autozone has repair manuals from haynes they generally have the code lists in them hope this helps

Posted on Aug 23, 2008

greg_margo
  • 1959 Answers

SOURCE: 02 ultima troble codes u1000

These 2 codes indicate a communications problem within the CAN (Controller Area Network). The CAN network malfunction per Chilton lists 3 possible causes:

  • CAN connector is damaged or is disconnected
  • CAN communication line is open, shorted to ground or to power
  • One of the modules is shorted and pulling the CAN voltage low
I hope this helps narrow down your problem. Best of luck to you.

Posted on May 09, 2009

greg_margo
  • 1959 Answers

SOURCE: SES light just came on. Jiffy Lube said their free diagnostic tester gave a U1000 code that they have not seen before. Took car to dealer today for recall fix & told them about U1000 code. Said th

U1000 indicates a communications problem to the PCM (main computer) below is a post from the http://nissanhelp.com forum made by a Nissan Tech with step by step instructions on how to possibly fix the problem yourself. Best of luck.
Greg
http://x.nissanhelp.com/forums/maxima/3884-05-maxima-u1000-code.html


Posted on May 21, 2009

  • 400 Answers

SOURCE: dtc u1000 and u1096 on gm 3500 8.1 truck

Check the battery cables, make sure the clean and tight, also check the left body ground.
Those two codes are just for communications. They do not usally mean there is a fault in the system. It means that one modual was unable to talk to another modual for a split second.
Which modual had the codes stored in it?

Posted on Oct 25, 2009

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I've got a 2001 Cadillac deville and it says it's lost the IRC ID and IRC data code. any idea how that happen?


When a malfunction such as an open fuse to a module occurs while modules are communicating, a DTC U1001-1254 Loss of 000 Communications is set current. When the modules stop communicating the current DTC U1001-1254 Loss of 000 Communications is cleared but the history DTC remains. When the modules begin to communicate again, the module with the open fuse will not be learned by the other modules so U1000 or U1255 is set current by the other modules. If the malfunction occurs when the modules are not communicating, only U1000 or U1255 is set. Radio quit working shows Code IRC U1000 please help

Dec 07, 2016 | 2001 Cadillac DeVille

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How do replace a speed sensor on an 1996 infinty I-30 ?


1996,

ok cars have 2 to 5 speed sensors.

so saying that means nothing.

but 734 does, first post ever with speed and code in one.

usually its not.

1996 what , kia? or Infiniti? perplexed i am.

734

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i do take it off and clean the black magnetic crap on the end every time. do so , often. and win.

Trouble Code Conditions:

NOTE: If DTC U1000 is displayed with this DTC, first perform the trouble diagnosis for DTC U1000. Diagnostic trouble code P0734 is detected when A/T cannot be shifted to the 4th gear position even if electrical circuit is good.

Possible Causes:



  • Shift solenoid valve A (On stick.)


  • Shift solenoid valve B (On stick.)


  • Shift solenoid valve C (On stick.)


  • Pressure control solenoid valve A (On stick.)


  • Forward and direct clutch assembly


  • U/D clutch


  • U/D brake


  • 2nd coast brake


  • One-way clutch No.1


  • Hydraulic control circuit


(so the FSM then has you conduct many tests to find true cause.)_



A/T are very very complex animals.



did you connect a scan tool that can SEE ALL factory DTC codes>

if not , you are blind..

cheap readers dont do that. they blind you.



the TCM can tell that 4th is not attained

by seeing the VSS speed too slow, that means the tranny is slipping

or is not in 4th gear, or the VSS fibbing its buns off (clean it , reset code, and drive)

Jun 24, 2014 | 2003 Kia Spectra

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

What is the code reading u1000 traction


Hi there:
DTC U1000 Class 2 Data Link


These DTCs set when the control module does not receive a message that it was expecting from another control module, and does not know which control module did not send that message.


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 5 seconds of beginning serial data communication, DTC U1000 is set. When more than one critical parameter does not have an identification number associated with it, the DTC will only be reported once.



Hope helps.

Sep 27, 2012 | 2005 Chevrolet Equinox

1 Answer

My trouble code is U1000 My garage does not know what this code means. I have had a diagnostic test and smoke test done. I own a 2003 Malibu Please advise Thank you Sharon Rodgers


If the DTC U1000 set current, this usually a module that is currently not communicating or a configuration issue...
For example: if the control module is configured for an option (ie: Onstar, Keyless Entry, Memory Mirrors, ect.) that the vehicle does not have, it may expect to receive a message regarding this missing feature. This would usually occur due to the control module being recently replaced and incorrectly setup.
Hope this was some help to you ??

Jul 19, 2011 | Chevrolet Malibu Cars & Trucks

1 Answer

Dtc u1000 and u1096 on gm 3500 8.1 truck


Check the battery cables, make sure the clean and tight, also check the left body ground.
Those two codes are just for communications. They do not usally mean there is a fault in the system. It means that one modual was unable to talk to another modual for a split second.
Which modual had the codes stored in it?

Oct 25, 2009 | 2001 Chevrolet Silverado 3500

2 Answers

Fault code p0440 CHevy venture


I had that exact code a couple weeks ago. Mine needed new oxygen sensors. They(there are 2, only one was throwing a code, but I had both replaced) cost a little over $100 to have replaced.

Sep 19, 2009 | 2002 Chevrolet Venture Passanger

1 Answer

U1000


it is a communication error with the ecm from the ignition switch here is the code description

GM Number U1000

Type Network - Manufacturer Controlled DTC - Manufacturer Controlled

Description Class 2 Communication Malfunction Conditions
Cause
DTC B1327, U1300, U1301 and U1305 not current (any particular device on the Class 2 serial data circuit will support some subset of these codes), the ignition switch position requires serial data communication to occur, then at least one operating parameter has not been associated with an identification number within 5 seconds after beginning serial data communication (a default value is used)

Oct 29, 2008 | 2003 Chevrolet TrailBlazer

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