Gaurav Posted January 21, 2017 Report Share Posted January 21, 2017 Recently my wife's trail blazer head light low beam conged off, showed to two good electrician and none of them could spot what is wrong. Bulbs are fine, fuses are fine but still power is not going to the holder. On further diagnose found out that there is HDM solid state relay no:46 that could be culprit as it control Headlight Module. Went to Chevrolet dealer in Dubai - liberty automobile today to buy and they don't have that in stock as it's a special relay and it cost 365 Dhs on pre-order. So if anyone has similar trailblazer, I like to pass by and borrow that relay for testing and find out if that's the actual culprit or not? Ours is 2009 model with I6 - 4.2 liter engine - GCC specs. Let's root for each other & watch each other grow. Link to comment Share on other sites More sharing options...
desertdude Posted January 22, 2017 Report Share Posted January 22, 2017 Usually what you can do is with a small sharp flat blade screw driver is pry of the plastic housing of the relay, inside you can just press the contacts by hands to complete the circuit and see of the headlights come on. Or you can takeout the relay, then take a small piece of wire of a decent gauge and find out which of the two pins need to by jumpered and then use your wire to bridge the gap, as in insert one end of the wire into where one of the pins go into the board and the other end into the other. But you need to know the which holes for lack of a better word need to be bridged to complete the circuit. Another very rudimentary and not so reliable test is put your ear close and hand over the relay and switch on the lights, most relay give off audible click and you can also feel the contacts inside the relay. Relay in very simple layman terms is a operable fuse. Like when you take out a fuse that circuit does not work and when you put it back it does. Only with a relay you can control when the fuse is in or not ( Although the relays function is not that really of a fuse ) Also if it is the relay get the part number, and look it up on ebay, you'd probably get it cheaper and faster than the dealer For Example http://www.ebay.com/itm/Headlight-Relay-Switch-Chevy-Silverado-GMC-Sierra-trailblazer-GM-OEM-15016745-/221733789715?fits=Year%3A2006|Model%3ATrailblazer&hash=item33a05d2013:g:unoAAOSwZVhWSOva&vxp=mtr ALSO a cursory search tells me you should have a similar relay already in the underhood fuse box #45 for the cooling fans, you should be able to swap it for #46 hence no need for all this hoo haa anyways ! lol P.S: Ignore most advise given. I forgot its a solid state so probably no moving parts in it. Link to comment Share on other sites More sharing options...
Gaurav Posted January 22, 2017 Author Report Share Posted January 22, 2017 Solid state relay = no clicking noise Relay 45 is not there in gcc models Jumping not advisable as it may cook whole HDM unit. EBay = 35 usd + 25 shipping + 2 week's Carnity hoo haa, still best option to debug Let's root for each other & watch each other grow. Link to comment Share on other sites More sharing options...
adil Posted January 22, 2017 Report Share Posted January 22, 2017 How about driving to sharjah scrappies and get one for dirt cheap and before buying try if it solves your problem or not. One trip + 50 dhs (max) and your problem is over. Link to comment Share on other sites More sharing options...
Gaurav Posted February 6, 2017 Author Report Share Posted February 6, 2017 On 1/22/2017 at 6:44 PM, adil said: How about driving to sharjah scrappies and get one for dirt cheap and before buying try if it solves your problem or not. One trip + 50 dhs (max) and your problem is over. Thanks @adil for great suggestion, I was in Sharjah scrap during this weekend with @Rahimdad and after lot of tries we found same HDM relay 15016745 from EATON for 20 dhs and it fixed the low beam instantly. 1 Let's root for each other & watch each other grow. Link to comment Share on other sites More sharing options...
Rahimdad Posted February 7, 2017 Report Share Posted February 7, 2017 @Gaurav My heart told me you would get it there and my heart told me it was going to work. It was a bit of hard work, but we showed patience and it paid off. Thanks for the biryani and lunch after a lunch, I enjoyed my time with you hunting for the parts and it was educational. Link to comment Share on other sites More sharing options...
slick72 Posted February 7, 2017 Report Share Posted February 7, 2017 Hi Gaurav and Rahimdad can we have the location of the shop and did you also notice any breaker for Nissan parts. Drive / Ride safe ! Slick 72 Link to comment Share on other sites More sharing options...
Rahimdad Posted February 7, 2017 Report Share Posted February 7, 2017 Although we were not eyeing any parts for the Nissan but there are quite a few shops that deal with Nissan parts and you can get lucky finding anything you are looking for with a little patience. I have marked the approximate spot where we found parts for all Chevys, close by there are many shops that store Nissan parts. https://goo.gl/maps/r4t5shzYfJ62 Link to comment Share on other sites More sharing options...
slick72 Posted February 7, 2017 Report Share Posted February 7, 2017 Thanks Rahimdad ! Slick72 1 Link to comment Share on other sites More sharing options...
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