2009 Chevy Traverse Ltz misfiring issues help - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 34 (permalink) Old 04-06-2019, 03:51 PM Thread Starter
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2009 Chevy Traverse Ltz misfiring issues help

Guys I’m having major misfiring issues in my traverse bank 1 cylinders 1,3,5. I had scanned and it’s showing codes P2300,P2306,P2312 P0300. I have replaced bank one coils, oxygen sensors, cat. I don’t know what else to do. Help please call if you can 715-817-3222 otherwise respond on here. Thank you.
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post #2 of 34 (permalink) Old 04-06-2019, 07:18 PM
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Causes for these codes may include:

Bad relay or blown fuse (fusible link)
PCM failure
Open or shorted wiring or wiring connectors (wildlife damage)
Defective ignition coil
Faulty camshaft or crankshaft sensor or wiring
Faulty spark plugs or wires
Burned exhaust valve

2011 Steel Green Traverse LT

Last edited by SteelGreenLT; 04-06-2019 at 07:24 PM.
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post #3 of 34 (permalink) Old 04-06-2019, 10:47 PM Thread Starter
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So I check the wiring at each coil and I have consistent power there even when misfiring.
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post #4 of 34 (permalink) Old 04-07-2019, 11:19 AM
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Quote:
Originally Posted by Adamherubin View Post
So I check the wiring at each coil and I have consistent power there even when misfiring.
Really? How can that be? Have toy checked your engine compartment fuseblock? 1-3-5 share the same fuse. bad connection maybe? Bad solder joint?
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post #5 of 34 (permalink) Old 04-07-2019, 11:32 AM
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https://www.traverseforum.com/33-eng...n-buildup.html

https://www.traverseforum.com/33-eng...misfire-2.html

https://www.enclaveforum.net/20-engi...misfiring.html

Could be carbon buildup.

What was the order of symptoms and repairs? When does it misfire? All the time? at a certain speed?
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post #6 of 34 (permalink) Old 04-07-2019, 01:10 PM Thread Starter
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There’s a fuse that does the off cylinders ? Any idea where it is or what it’s called in fuse panel?
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post #7 of 34 (permalink) Old 04-07-2019, 01:36 PM
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post #8 of 34 (permalink) Old 04-07-2019, 02:08 PM Thread Starter
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It started off just misfiring every once and a while. Then it started stuttering really bad anytime the engine would sit for more then a few hours but only on start up for a minute or so. Then it would kick in and run fine with the normal stutters.

I’ve changed two out of three coils on the odd side bank one. I changed the bank 1 cat and both up and down bank one o2 sensors. Now it running and fmisforing so bad sometimes it barely drives then it will kick in and drive fine with some misfiring but still driving ok.
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post #9 of 34 (permalink) Old 04-07-2019, 04:08 PM
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Were you able to open up the wiring diagram in the adobe link? see the common ground connection on the odd coils? G112. make sure it is intact and going to a good chassis ground connection.
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post #10 of 34 (permalink) Old 04-07-2019, 05:16 PM
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If you cant find anything electrically wrong, start looking towards carbon buildup.

https://www.enclaveforum.net/8-buick...tml#post244163

How is your Air intake/ Throttle Body/ PCV system cleanliness and health?

Last edited by electbc; 04-07-2019 at 05:23 PM.
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