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post #1 of 19 (permalink) Old 10-12-2016, 06:09 PM Thread Starter
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2008 LT Cigerette Lighter Fuse

Daughter in transit from Charston to KC with her replacement for her dead 05LS. She is in an 08LT
She's made it to Knoxville and has problem with Cigerette Lighter power. I have owners manuals for 06-09 cobalts. The question is ...Does the Aux Outlet use the sqme fuse as the Cigerette Lighter.

I See the 06 manual says 2 fuses one labled trunk/outlet and LTR.....the 08 manual only has Outlet in the same possition as the 06 LTR. The fuse labled in the 06 as trunk/outlet is labled in the 08 as trunk/heated seats.

So, first is the Aux power port behind the e-brake, standard for an 08 LT and
does it use the same fuse as the cigerette lighter?
A body wiring diagram would be great....
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post #2 of 19 (permalink) Old 10-12-2016, 06:13 PM
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No 2 separate fuses. Outlet is a 20 amp and lighter is a 15 amp.




Every minute spent angry is a happy minute lost for ever and ever!!!
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post #3 of 19 (permalink) Old 10-12-2016, 06:45 PM Thread Starter
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Ahh FAR out for the super fast reply.
Expecting call from her directly.
Will let he know. I did tell her of the Aux port to check and see if she had one.
The diff between 06 owners manual and the 08 left me ASSuME-ing and just needed to confirm.

I do hope she has a full bank of spair fuses.

Thanks again.
Ps....may need to steel her power windows/door locks for my 08 BC....she is use to hand cranking windows from her 05


Info just passed on she will pull both fuses in the AM to confirm. She Stated no power from either for he cell phone usb charger..I told her the charger could be dead or may not work on her Cobalt ports.
Let he know better quality parts might just work better....go figure.

Last edited by 1966tbird; 10-12-2016 at 08:59 PM.
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post #4 of 19 (permalink) Old 10-13-2016, 07:17 AM Thread Starter
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Quick update

Her 08 LT is moving again.
Seems GM changed wiring for 08 or other undocumented mods.
Both power outlets on the one 20A fuse OUTLET.

Bottom line. Just drive the car.....and if it makes that noise again...just turn the radio up.
That noise will go away soon enough.
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post #5 of 19 (permalink) Old 10-13-2016, 10:31 AM
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I had a 2010 and an 08 and they both had separate fuses, somebody must have played with the wiring.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

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post #6 of 19 (permalink) Old 10-13-2016, 02:09 PM Thread Starter
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Update
She made it to lexington, kt and lost RR tire. Found a Bridg stone dealer and got a matching replacement. Lots of excuses but they could not read LF sensor. Instead of fixing, she headed out, now in louisvill,kt @3:50cst. Claims speedo not stable.
Tach is stable, engine running well. Power to aux plug or cig lighter working. Cell phone charges.
Having her pull into Azone to buy code reader for herself or at least check for error codes.
Suspect she's loosing ground due to unstable speedo reading.

---------- Post added at 09:09 PM ---------- Previous post was at 09:05 PM ----------

This is a 5sp std. 2008 LT
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post #7 of 19 (permalink) Old 10-13-2016, 02:24 PM
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Re-seat BCM connectors, GMLan signal goes through BCM before heading out to radio and instrument panel. Lots of cars from flood insurance found themselves back on the market when they were suppose to be sent to crusher, a lot of these cars have corrosion problems on the lower pins of the BCM. Incoming GMLan is on one of the lower pins.

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Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

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post #8 of 19 (permalink) Old 10-13-2016, 03:08 PM Thread Starter
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Just told he to do that 30 sec ago

---------- Post added at 09:46 PM ---------- Previous post was at 09:35 PM ----------

Ok
Both connectors unlocked & reseated 2 or 3 times. Getting he back on the road. Azone said no codes logged. Cant tell if any data was saved or not.
Will update once she is back on I-64 heading for st louis

---------- Post added at 10:08 PM ---------- Previous post was at 09:46 PM ----------

No joy in mudville.

Both connectors and bcm fuse 25 swapped out with another good fuse.
She stated as soon as car started, speedo started jumping.
I asked her if she knew how to drive without a speedo? I said dont b passing everything on the road. We will see if it settels down in a few miles after she leaves loiusvile and gets into indiana.
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post #9 of 19 (permalink) Old 10-14-2016, 06:13 AM Thread Starter
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Item #31

She only made it 70mi short of St Louis before she ran out of steam. Happy for her that she pulled into a motel for the night. Bummer that she is crossing st louis during rush hr.
In the daylight, i will have her look at the VSS connector #31 on the drawing

The connectors C1 & C2 were both disconnected and reseated several times along with the connectors on the ECM/PCM

From tonkin online parts
2008 Chevrolet Cobalt LT 2DR 5-SPEED MANUAL TRANSAXLE
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post #10 of 19 (permalink) Old 10-14-2016, 08:19 AM Thread Starter
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Moving again

Now 20mi from St Louis and speedo setteled down.
Left front whell well liner has been cut off and she found the right wire & connector to adjust/wiggle.
She claims now after 30-ish miles no problems and speedo stable.
She is now monitering her speed and tach a bit closer.
Gawd ya gotta love it when they hear that popping sound.
She has also learned you dont need a key-fob to train the TPMS.
And has been offered a $150 bill, for a key-fob and programing, in order to be able to use a key-fob to train the TPMS.
Smart chickie, she passed on the offer.


I do need to get a good set of GM docs for these autos!

Last edited by 1966tbird; 10-14-2016 at 12:02 PM. Reason: MissSpell checker working again. I,gotta kill that thang
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