truck signal light question

[Alberta_Qaudin]

ok so my friends truck lost its signal lights not long ago, we've checked fuses, and the obvious stuff but his brake lights arent working now either, any idea's is this a relay maybe??

[D-7#61-450r]

Somewhere inside the truck.


With a more accurate description of what year, model, make, might be a little more helpful.

[Alberta_Qaudin]

its a 97 gmc 1500wt

[wvspeedfreak]

Check to make sure the hazard light switch(4 ways) isn't pushed part of the way.I know it sounds too simple but I have seen it happen before.

[Alberta_Qaudin]

we've tried the hazard light a few times but maybe i will take the steering column apart and see if it is sticking below the switch

[KXRida]

Also check to make sure if he has wires for a trailer they are not grounding out on anything such as the exhaust or tow hooks. If the fuses are good, it sounds like there is a short somewhere. Time to pull out the volt meter and start tracing wires.

[D-7#61-450r]

Check and see if power is going to the plug at the rear tailights. I believe those trucks have a rear circuit board and they are nothing but problems. I have issues with them on my 97 Tahoe. The circuit board will loose connection internally and you will have to buy a new one or be creative on you circuitry and repair the board. Also they have issues with the multi function switch. But check the plug and see if power is getting there first.