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Discussion Starter · #1 ·
Just replaced the valve cover on my 2012 Cruze, then went to crank it up and it won’t turn over. I’m not getting power somewhere but i’ve checked the fuses, spark plugs, battery cable, etc. It also is giving me messages about StabiliTrak, power steering, and parking assist that were not on before. I’m running out of options, so any help would be nice! Thanks 😊
 

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2013 Cruze LT
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Pull the negative battery cable for a few minutes to reset the ECM and plug back in.
 

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2012 Cruze LTZ 1989 StarQuest 2004 TrialBlazer EXT
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Disconnected t and reconnect battery.. verify your getting power. Make sure you plugged in all your connections you mahe have pulled when doing the cover.. disconnect said connections and reset them.
 

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Discussion Starter · #4 ·
Got a new beg battery cable (left it unplugged overnight before putting in the new one, and currently trying that again in vain hopes), still nothing. Tried unplugging the cam shaft sensors, jumping it with another vehicle, tested the grounds and all battery cables, and all fuses seem to be good. Still no luck.
 

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2013 Cruze LT
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Did it run fine before? If so retrace your steps.
 

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Discussion Starter · #6 ·
Did it run fine before? If so retrace your steps.
It was just running a little rough before, that’s why I replaced the valve cover. I’ve taken it off and put it back on again, thinking I had some debris in the engine/around the spark plugs, but everything was clean. I’ve checked everything around the valve cover too that I could’ve moved/budged and still no luck. Maybe I should check the ECM? Running out of options now
 

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It was just running a little rough before, that’s why I replaced the valve cover. I’ve taken it off and put it back on again, thinking I had some debris in the engine/around the spark plugs, but everything was clean. I’ve checked everything around the valve cover too that I could’ve moved/budged and still no luck. Maybe I should check the ECM? Running out of options now
Check for 12v at starter relay terminal “30” with key in start position.
 

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Tried testing this, but it wasn’t reading anything or receiving volts.
Tried testing this, but it wasn’t reading anything or receiving volts.
And you made sure you were all the way down into the fuse block? It’s pretty deep, normal meter leads won’t get all the way down. Use a smaller probe or use a small piece of cable if you have to. Also make sure one lead of meter is on “30” and the other is on a ground with key in start position.

If you truly don’t have battery voltage there you need to start checking battery positive cabling for shorts or an open.
 

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Discussion Starter · #10 ·
LAST UPDATE. Hired a mechanic to come check it out and he didn’t have the equipment to diagnose the problem so we had to take it to the dealership (never again though). Diagnosed and fixed the wiring harness in the dash. Not sure how that got messed up in the process of fixing the valve cover, but it’s fixed now. Thankfully fairly cheap, but not something I could’ve done myself. Just wanted to close this out and update everyone on this headache.
 

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2014 LT program car, Pull Me Over Red
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LAST UPDATE. Hired a mechanic to come check it out and he didn’t have the equipment to diagnose the problem so we had to take it to the dealership (never again though). Diagnosed and fixed the wiring harness in the dash. Not sure how that got messed up in the process of fixing the valve cover, but it’s fixed now. Thankfully fairly cheap, but not something I could’ve done myself. Just wanted to close this out and update everyone on this headache.
Did they tell you anything about the wiring in the dash? What it was for or what it served?
 
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