The service engine light is on but when i plug in the code reader I do not get any display on the screen, like it is not even pluged in. the reader workes on my other cars, but reads nothing on the tahoe. whats the problem?
SOURCE: yellow wrench service soon light comes on
that lights up at certain mileage intervals usually around 50,000--75,000 100,000 and so on it doesn't mean that the part is bad it just means that certain things should be replaced or cleaned so the dealer can get you to bring it in .the service manual will tell you what it calls for at what mileage then the dealer can turn it off or you can once you look it up in a manual.
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.
SOURCE: service engine light blinks,code read out of po300
Code p0300 is the code for "random missfire detected". The "check engine" light is flashing to warn you that severe damage is being done to the catalytic converter.(very expensive)..
SOURCE: reset check and service engine lights
It's in the console under the coin holder, in front of the gear shifter. You have to remove the coin holder and you will see it.
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