H'electrical Issues - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 5 (permalink) Old 07-30-2011, 07:42 PM Thread Starter
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H'electrical Issues

Does anyone know what grounds the fusebox under the hood? I have no power inside when i turn the ignition on replaced ignition switch none of the usual lights in the dash cluster before starting the car, car will not crank I removed the wiring blocks from fusebox smelled a burnt smell I wonder if the board is burnt somewhere. Anyone know what pins are supposed to have power with wiring removed? Does anyone have any ideas I dont know what to try next pcm bcm fuse box? We dont have the cash to throw 1000 1500 at the dealer please help if u can
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post #2 of 5 (permalink) Old 08-01-2011, 06:20 AM
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Probably a dumb question, but the battery isn't drained, right?

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post #3 of 5 (permalink) Old 08-01-2011, 08:24 AM Thread Starter
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the batterys good i even tried a new one to make sure radio and things work just nothing thats supposed to get power with ignition on checked bcm power and grounds are good checked plug ins for pcm grounds are good just no power Does power go through the fusebox under the hood then to pcm and inside or inside and then back out to pcm?
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post #4 of 5 (permalink) Old 08-01-2011, 08:27 AM
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I believe out of the battery and into the fuse box, then out to the PCM, and the other things.

1986 Chevrolet Camaro IROC-Z - Wrecked/Sold
1998 Chevrolet Cavalier - Wrecked/Donated
2007 Chevrolet Cobalt LT - M62 Supercharger, Ported Throttle Body, 42 lb/hr Injectors, Intense 2.9" Pulley, Cobra Heat Exchanger, SS/TC Exhaust, TTR Engine and Trans Mounts, Trifecta Tune, ZZP Header and Downpipe, '08+ FE5 Struts/Shocks, SSC Springs, FE5 Control Arms, SS/SC Front Swaybar, Powell Hardcore Rear Swaybar, 18" MSR 045s, Dunlop ZIIs, Nightshaded Tails/Side Markers, Shorty Antenna, Black Bowties, Black Grilles, Black Headlights, Dual JL 12" w1v2 Subs, A/D/S Front/Rear Speakers, Pioneer 7" Touchscreen, G85 Recaros, Leather Rear Seats, 160 MPH Cluster.
2014 Chevrolet Cruze Diesel - 17" MSR 013s, Black Bowties, Black Tails, UR Rear Lower Bar
1981 Chevrolet Camaro Z28 - JVC Ribbon Tweeters, SEAS Mids, Pyle Woofers, Kenwood Tape Deck, Zapco Amp/Equilizer, Ceramic-Coated Longtubes, 2.5" Pypes Stainless Exhaust, Bilstein B6 Shocks, GW U/L Control Arms, Hotchkis Springs Sway Bars, DD HDX Cluster
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post #5 of 5 (permalink) Old 08-01-2011, 12:10 PM Thread Starter
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hey i appreciate your feed back i always considered myself a descent mechanic until i was faced with the electrical issues on this cobalt. I think my bcm and pcm is good it still shows codes like power steering trunk ajar and such I removed the underhood fusebox i think the circuit board smells burnt closest to the fan found a donor for 25$ wish me luck thanks again
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