View Full Version : aftermarket HID lights affecting ECM ?

06-18-13, 05:01 PM
Our 2012 went into the limp/no power mode the other day, took to the dealer..was told that aftermarket HID lights effect the ECM...anybody else heard this one ?

06-28-13, 10:29 AM
I've been running aftermarket Hids on every car I've owned and never had an issue like that.

07-04-13, 08:18 AM
I have never heard of a problem like this from HID's. I have had HID's on my headlights and fogs for over 55,000 miles on this car and never a problem.

07-06-13, 09:12 PM
I think it MAY depend on the watt draw. I've heard GM has computer "problems" with some aftermarket items that draw more (much) than usual amounts. If I remember correctly a notice was issued by GM to the dealers regarding this.

08-08-13, 01:21 PM
I'm thinking of having HID put in my 2010, does anyone know what watt draw is to much?

08-08-13, 07:52 PM
Anything over 55W.

08-09-13, 02:47 PM
Anything over 55W.

So 55w HID bulbs all ok in Fogs & Hi/lo beams?? or is there a problem with the high beams?

08-10-13, 10:29 AM
Well, 55W in your fog lights will piss anybody you meet off, and are too bright for so low a light (also the fogs are only fused for a 35W draw). 55W in the lows will be ok, because they are a projector system and project the light optimally to keep you seeing and other people safe (not blind). 55W in the high beams is way more than sufficient, 35W HIDs are 3 times brighter than halogens, so any change is better, but aside from that, high beams aren't used when oncoming too much, so 55W could be acceptable.

08-12-13, 12:54 PM
Thanks for the advice, going with 35 w for fogs and low beams.