Cereal_Killer Posted April 19, 2009 Report Share Posted April 19, 2009 The brake lights and hazards have stopped working on my S10, the turn signals do however work fine, also the center high mount is working. I think from my research that it may be the multifunction switch. I had Napa get me one but it wont be here till Tuesday morning. Its $150 and before I spend the money I was hoping someone has had this problem before and could confirm. Thanks. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 19, 2009 Report Share Posted April 19, 2009 multifunction switch if all else fails, plug it in and see if it fix's it. it should. and i havent had much luck with napa having the coorect ones i have needed for some s10's lately. all 3 they showed for the one i was working on, where wrong. the dealer had the right one, but at 175 ...but that was just 1 out of 50 or more on that ordeal. Quote Link to comment Share on other sites More sharing options...
78 malibu Posted April 21, 2009 Report Share Posted April 21, 2009 if you have a plug in harness for trailer lights check where it plugs into the main harness.my s10 done the same thing and the trailer harness was corroded. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted April 21, 2009 Report Share Posted April 21, 2009 if you have a plug in harness for trailer lights check where it plugs into the main harness.my s10 done the same thing and the trailer harness was corroded. i have also seen the ground wires on the frame rail break off the eyelet and cause this same issue aswell. Quote Link to comment Share on other sites More sharing options...
Rattle Can Posted April 21, 2009 Report Share Posted April 21, 2009 yea my bet is on the haz switch but it could be as gearhead said a bad ground, i had the same problum but it was the haz switch Quote Link to comment Share on other sites More sharing options...
Cereal_Killer Posted April 21, 2009 Author Report Share Posted April 21, 2009 (edited) It was the CHMSL relay, Dave found the diagram I needed earlier. Edited April 22, 2009 by Cereal_Killer Quote Link to comment Share on other sites More sharing options...
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