Question about 2004 Chevrolet Tahoe

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CAN/OBD-code reader will not read my 2004 chevy tahoe why not ?

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You can check to see if you blew the cigarette lighter fuse by checking in the fuse box under the hood on the driver side. The fuse will be in the bottom right hand corner of the fuse box towards the windshield. If it lights up when test, the fuse is ok. What I found out on my '04 Tahoe was that in '03 GMC started making the CAN (Controller Area Network) which will not be compatible with plain OBD 2 Scanners & seem as though something is either wrong with the machine or car connector port. Believe me, I've taken my Tahoe to several auto parts store & even a few garages to be disappointed & not have my diagnosis done. Be sure that the OBD 2 Scanner you have, says "CAN" on it, or that it is "CAN" compatible & this will solve your issue.

Posted on Feb 24, 2013

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6ya6ya
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Posted on Jan 02, 2017

chrischronic
  • 235 Answers

SOURCE: can't read codes with code reader

you most likley have a blown fuse. the fuse for the connector and cig lighter are usually on the same circuit . if you have a owner manuel check and see which fuse is for the obd/cig lighter. if you dont have a manuel then check every fuse in the box and see if you find a blown one. the plug whare the scanner connects is what powers the scanner so if you cant find a blown fuse then you know youre not getting power to the plug for some reason.

Posted on Apr 24, 2009

  • 109 Answers

SOURCE: 2004 Chevy Tahoe stereo wiring diagram

BLACK-ground
RED-accessorie
YELLOW-power 12v
PURPLE-left rear
GREEN-right rear
WHITE-left front
GREY-right front
BLUE-REMOTE
and the other blue one is for remote antenna..

Posted on Dec 04, 2008

BCAS1298
  • 3092 Answers

SOURCE: Engine light came on,used code reader OBD 2 and

Bank 2 sensor 2

Engine's driver side o2 sensor after the Catalytic converter.

Posted on Jan 23, 2010

freetek
  • 5568 Answers

SOURCE: where is the obd plug

The code readers have changed along with the standards relating to the depth of info provided by the ECUs; you will need to use your model year to shop one and do shop it; the prices of these things vary greatly and the simplest will do what the typical owner needs done; read codes. You'll find numerous vendors on line and they range (overall) from ~$20 to $250+ US.

I've not seen any connectors that were not located on the driver's half of the car; they are a flattened 'D' configuration, have always been mounted horizontally and have two rows of pins. Some are concealed under a slip-off plastic cap. 

Posted on Oct 18, 2008

  • 66 Answers

SOURCE: How to read codes on a 1994 Chevy K Blazer without a code reader?

You can take it to Auto Zone and they will read them for you.

Good luck.

Posted on Jun 22, 2009

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