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TCC line pressure (vs load) causes TCC slip
I discovered this on my 2011 Yukon 6L80 awhile back and forgot to share it. This is primarily TCC engaged in 5th gear (or possibly 6th) in the sub 2000 rpm range, with desired TCC slip of '0' (programmed not stock). At low load, the TCC line pressure has a lower threshold, effectively the...- MWD_CTSV
- Thread
- Replies: 8
- Forum: Engine & Drivetrain
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First year ownership and 5K miles 2011 Yukon Denali
I'm looking at my recent NC safety emissions report and it is 5K miles (219K) since I had it inspected last year at 214K miles. I actually had to get a 10-day tag and pay a fine to take it for inspection because it was 2.5 months from when I bought it and past due for inspection. I'm not...- MWD_CTSV
- Thread
- Replies: 29
- Forum: General Discussion
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Tail light harness
One of the many things I love about the Yukon is that there are so many that GM can make/sell high demand parts for a very reasonable cost. $30 shipped for a brand new GM tail light harness from Amazon no less. However, on the flip side, the harness I was replacing because of broken pin on the... -
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214K 6L80 rebuild before TCC failure
My new to me 214K mile 2011 Yukon Denali XL had brown transmission fluid, and it seemed like I was on borrowed time after reading lots of info on this forum. It shifted fine, but I figure now is the time to investigate and be proactive, so I pulled the trans. I recommend pre-emptively...- MWD_CTSV
- Thread
- Replies: 31
- Forum: Engine & Drivetrain
