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Chevy trailblazer code u1000,u1041and co550 - 2002 Chevrolet TrailBlazer

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Scan code U1000


That is a communication bus problem code . Are you familiar with GM class 2 serial data communication network ? All the modules on the vehicle share information an they do it by the class 2 data bus.


2 UART Class 2 Bus Configuration

Dec 05, 2015 | 2006 Chevrolet Trailblazer

1 Answer

U1000 code


You are loosing the % volt reference signal to the accelerator pedal postion sensor. Could be a faulty sensor or a wiring issue between the pcm and the app sensor on your gas pedal.

Jul 02, 2014 | 2002 Chevrolet TrailBlazer

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

2003 gmc envoy u1000 code & code p0014


Stuck or faulty variable cam timing solenoid

Feb 13, 2013 | 2003 Chevrolet TrailBlazer

1 Answer

2000 chevy venture key jammed ignition replaced ignition car wont turn over. OBD-II codes U1000, P0463, P1626. How do I fix problem


Code U1000 is saying the ECM lost communication with the BCM which can happen when the key switch is turned far enough to stop the engine but not enough to turn the accessories off.
Code 463 is for fuel level sensor circuit high which is a problem with the fuel gauge or the sending unit in the tank.

Code 1626 involves the theft deterrent system.
P1626 CHEVROLET - Theft Deterrent Fuel Enable Signal Not Received
Read more: http://engine-codes.com/p1626_chevrolet.html#ixzz210PRFRO9

The code 1626 could be the issue - the passkey system may not be reading the chip in your key.

Jul 18, 2012 | 2000 Chevrolet Venture

1 Answer

2003 trailblazer codes U-1000, B- 1850, Y- 1160, what do they mean?


Don't see these too often, must of been a dealer or a good mechanic with some expensive equipment....

U1000 is loss of communication with an unknown module...could be any module like TCCM.
B1850 is Drivers Lumbar Horizontal sensor Circuit Malfunction...in your seat.
Y1160, I have no clue what this is.

I would take it to a mechanic that has a Tech II (or equivalant) diagnostic machine, this will pinpoint your problem with at least the U1000...will show which module is not communicating. Would be able to tell you what the Y1160 is also. Good luck!

Feb 14, 2011 | 2003 Chevrolet Trailblazer Ext

1 Answer

I have 2002 envoy with service 4wd light on a code co550 ecu/ccu malfunction .where do i go


Replace the transfer case module.this module will need to be programmed by a gm dealer.Co550 is a internal fault code.bulletin from gm for this.

Dec 02, 2010 | 2002 GMC Envoy

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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