Question about 2006 Chevrolet Silverado 3500

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Trouble code u1000

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The "U" means Network communications. The 1000 means the same thing. Translation: computor and/or computor conections.

Posted on Oct 11, 2013

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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.

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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...
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Hope this was some help to you ??

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Trouble code u1000 on nissan titan


DTC (Diagnostic Trouble Code) U1000 is a problem with the CAN communication line.
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation

This DTC sets under the following conditions:

The ECM (Engine Control Module) has lost communications with one or more of the onboard control units for a specified amount of time.

To diagnose this code you must scan all the other modules to see if they can communicate with the scanner. If all the modules are able to communicate with the scanner then the problem is intermittent and can be very hard to find. If you have one or more modules that fail to communicate then the problem is the data line to that (those) module(s).

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No start cranks ok .trouble shoot code shows u1000 and u1001


Those codes are can communication codes that help each system talk to each other. You may find that it needs a new crank sensor. The 2.5 liter engine had some issues with crank sensors.

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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?

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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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