2005 No Dome Light - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

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post #1 of 41 (permalink) Old 05-08-2012, 04:38 PM Thread Starter
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2005 No Dome Light

My dome light isnt working. I bought the car for my daughter. I checked the fuse and it's blown. Every time I replace the fuse it blows again right away. I would love any help I could get. I took the dome light out and unplugged it but still the same thing.
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post #2 of 41 (permalink) Old 05-08-2012, 04:58 PM
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You blow a fuse with no dome bulb? So B+ wire from BCM must be pinched somewhere. I'LL find the routing of the harness for you. Coupe or Sedan?

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post #3 of 41 (permalink) Old 05-08-2012, 05:09 PM Thread Starter
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Yes it keeps blowing. I took the bulb out. I unplugged the dome light and as soon as I put in a new fuse it blows instantly. It is a sedan. I am very thankful.

---------- Post added at 08:09 PM ---------- Previous post was at 08:06 PM ----------

Also I even held in the door switch and it still blew. It may be possible I didn't hold it in long enough?
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post #4 of 41 (permalink) Old 05-08-2012, 05:30 PM
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Also I even held in the door switch and it still blew. It may be possible I didn't hold it in long enough?
Possibly, they need to fade out and even then will have a trickle of voltage going threw the lines as we found out after installing LED's. If its popping instantly, you'll want to follow the wires back to the BCM from the dome light. Its easier if you have a sunroof, but since you dont you might need to pull down the headliner. Check the connection at the BCM itself and pull off the dome light and check those wires too...make sure theyre not melted or exposed.

An easier fix might be rewiring the dome light yourself. Its really not too difficult. Just running 2-3 wires (I don't have a dome light so I don't know how many there are) from the BCM connector to the light.

I'm not sure what else would be in line with that fuse and in turn causing it to pop.
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post #5 of 41 (permalink) Old 05-08-2012, 05:33 PM Thread Starter
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I really appreciate any info. Thanks.
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post #6 of 41 (permalink) Old 05-08-2012, 05:34 PM
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OK at least we now know that the Dark blue wire with white stripe is being shorted out. Next step is to remove the drivers side rear plastic panel above deck lid (see picture)where you will expose a harness junction. This junction carries that Dk-blu/wh wire to the dome. Disconnect at this point and try an other fuse (5 amp) is enough for the test. If it blows again the short is between BCM fuse block and this junction, if it doesn't your short is between this junction and dome receptical.


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post #7 of 41 (permalink) Old 05-08-2012, 05:42 PM Thread Starter
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Thanks alot for the help. I will be checking this out tomorrow.
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post #8 of 41 (permalink) Old 05-08-2012, 05:56 PM
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Take the round cap from the pillar out and one screw holds it in place the rest are quick clips.

---------- Post added at 09:56 PM ---------- Previous post was at 09:55 PM ----------

Oh be careful not to break wire going to rear window defog.

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post #9 of 41 (permalink) Old 05-09-2012, 03:59 PM Thread Starter
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I took off plastic and there is wires but no junction to disconnect.

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post #10 of 41 (permalink) Old 05-09-2012, 04:05 PM
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It should be there unless it slipped down towards the trunk.

Or it might be tucked under the headliner.

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Last edited by Coby7; 05-09-2012 at 04:38 PM.
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