service 4wd
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07 Yukon C0306 Service 4wd (most fixes tried already)
C0306 (Motor A/B Circuit) persists for over a year and all the parts and $ thrown at it. Please Help! I have done; - actuator - selector switch - TCCM - TCCM wire harness - Encoder Motor & relearn flash - Checked all external grounds, cleaned - checked all fuses - I do not see broken wires...- Tray0625
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- 07yukon c0306 service 4wd
- Replies: 12
- Forum: Engine & Drivetrain
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Manual vs dealership maintenance schedule
My 2015 just went past 100k and dealer wants to change everything. Some of this stuff, per the manual, I should have done 10k miles ago but I didn't see any mention of how often power steering fluid should be changed. Also internet search says coolant every 30-35k miles while manual says 150k...- cbuckeye20
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- maintenance service 4wd
- Replies: 14
- Forum: Engine & Drivetrain
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I
02 z71 4x4 problems continue. New switch, new encoder, same problem.
Hey sorry for posting so much So I have swapped the switch, no change I swapped in a new encoder motor and cleaned the connectors ( no corrosion just wanted to be thorough) , no change Before the encoder motor and cleaning I had c0308 and c0327 With the new encoder I had c0308 and c0323...- Ialsofkdyourdad
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- 4x4 service 4wd transfer case
- Replies: 29
- Forum: Engine & Drivetrain
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A
Kicking into 4L with encoder unplugged
So I'm at a loss right now with my Tahoe. I have a rear main seal leak and it's been leaking into the encoder motor. I cleaned and replaced the encoder ring once I found the issue but since doing so my tahoe kicks into 4L on it's own when starting the vehicle and putting it into drive. I have...- Andrew Smith
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- 4wd 4wd service light service 4wd transfer case
- Replies: 0
- Forum: Engine & Drivetrain
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J
Service 4wd Message
2006 Chevy Tahoe 189k 3rd transmission. I am unable to find my previous post about this so just wanted to post an update. I was having the Service 4wd message and also stability control disabled sporadically. I used information on here to test the switch and indeed the 4Lo button had a bad...- Jenzenauer
- Thread
- service 4wd
- Replies: 30
- Forum: Engine & Drivetrain