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Have you tried switching relay #45 with 46 to see if it turns off? If I were you I'd buy that relay anyway and have it just in case ($35 is a good price). In due time it will need to be replaced. Mine has already gone out and I still keep a spare. Also, is your DRL sensor at the windshield visiable or has it fallen into the dash (happened to me). If all else, look up DRL killer for trailblazers if your model doesn't have an off switch for the lights.
Thanks,
Trevor Jones
it seem to fix the problem for me.
In the past month the face vents for the ac have stopped working, the feet and defroster still work fine. Two weeks ago, the battery shorted out. Now the transmission will not shift into third gear, we tried changing the fluid and filter, there were also very few shavings that had been droppped. It just rolled over to 90,000 miles so i would think it to be in good condition. Could this be an electrical problem causing all of these problems or am I stuck with a lemon?
I tried everything to find the source of my frustration in regards to the left low beam headlamp;
1) checked the fuse
2) the HDM relay (i even swapped with blower)
3) Replaced socket to lamp, tests good.
4) removed the grille and swapped headlamps, this only confirmed the left low lamp (wiring)is the culprit.
5) To be determined. I tried to crack the fuse/relay but unable to.
Any other suggestions?
Early issue was the only intermittent operation with the headlamp...then after my Father In Law and I worked on it...it operated just fine and then a few weeks ago it no longer works. I am deploying soon and I don't want to leave my wife with less than acceptable car.
The Trailblazer does have separate bulbs for low beam and high beam, and I've seen some videos about modifying things so that both lights are on when you go to high beams, so I assume that the lows going out when the highs come on is normal operation.
Low beam both work on low only. When high beam switched on, both low beam go out and only have two high beams. Only have two low beams two high beams. Not four lights on high beam. Thx
My last post, last two sentences should have been--- Only have two low beams OR two high beams. Not four lights on high beam. Thx again