mikez71
Full Access Member
- Joined
- Mar 9, 2023
- Posts
- 1,107
- Reaction score
- 1,291
Just happened today..
~85-90 degrees Fahrenheit. Has been 110 degrees lately, gonna be 112 for a couple more days..
Drove about 15 mins to my uncle's. No issues.
Leaving 45 mins later, the Tahoe (2012, 5.3) feels like it's in REP mode pulling away from every stop, until I get around 20mph and then it starts to pull mostly normally.
No engine related dtc's in autosync, no REP mode. I was low on gas, filled up. Still boggy for a few miles, but seems to have cleared up. Will need to test drive more.
Bad gas? I drove a whole tank of it with no issue, and I've run the tank lower than that before.
Hooked up the Tech2, no stored codes. no misfires, current or stored (unless I missed it somewhere)
LT fuel trims seem off, but Short fuel trims look good.. Maybe the fuel change? was showing 8% ethanol after filling up, which went to 0%. Unfortunately I forgot to check it while bogging..
![IMG_0112.jpeg IMG_0112.jpeg](https://www.tahoeyukonforum.com/data/attachments/426/426843-4a16f0d3cbb8fbbe10e75a73a9eb10ac.jpg)
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THE CULPRIT: Loose and 1 missing motor mount bolt(s). !!!
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~85-90 degrees Fahrenheit. Has been 110 degrees lately, gonna be 112 for a couple more days..
Drove about 15 mins to my uncle's. No issues.
Leaving 45 mins later, the Tahoe (2012, 5.3) feels like it's in REP mode pulling away from every stop, until I get around 20mph and then it starts to pull mostly normally.
No engine related dtc's in autosync, no REP mode. I was low on gas, filled up. Still boggy for a few miles, but seems to have cleared up. Will need to test drive more.
Bad gas? I drove a whole tank of it with no issue, and I've run the tank lower than that before.
Hooked up the Tech2, no stored codes. no misfires, current or stored (unless I missed it somewhere)
LT fuel trims seem off, but Short fuel trims look good.. Maybe the fuel change? was showing 8% ethanol after filling up, which went to 0%. Unfortunately I forgot to check it while bogging..
![IMG_0112.jpeg IMG_0112.jpeg](https://www.tahoeyukonforum.com/data/attachments/426/426843-4a16f0d3cbb8fbbe10e75a73a9eb10ac.jpg)
---------------------------------------------------------------------
THE CULPRIT: Loose and 1 missing motor mount bolt(s). !!!
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