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Off Topic Off Topic - General non-Corvette related discussion. |
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10-17-2021, 12:59pm | #1 | ||||||
Chief Electrician
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2015 Sierra issues. Experts or smartasses welcome.
2015 Sierra Denali 120006 miles. I bought this used and occasionally I would get a P0307 code. I'd erase it and it would drive for months with no issue. Last night I went to dinner..' all good. I start the truck to leave and as I pull out I get a stabilitrak light and a flashing CEL. Reduced power and bad idle.
Today I: Disconnected the battery for a couple hours hoping for a miracle "reset" no luck. Swapped 1 and 7 coil, plug, and wire. No luck Observations: NO lifter tapping #7 plug was oily When no code is present, oil pressure is about 30. When stabilitrak light comes on, oil pressure increases to just over 40 and I can hear some sort of sound like air flowing or vacuum or something. When I clear the code, the sound goes away and the oil pressure goes back to 30. CEL comes on long after the Stabilitrak has been on a while. (minute or more) Only ONCE after I first swapped the plug, coil and wire, I got a cold rough idle code P050D V4/AFM does not engage. |
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10-17-2021, 1:50pm | #2 | ||||||
Barn Stall Owner #1991
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That's all I got. |
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10-17-2021, 1:57pm | #3 | ||||||
Barn Stall Owner #2112
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My jeep is throwing a thermostat code. I bought the OEM part from Rock Auto along with the sensor and 4 things of anti-freeze, and will have my mechanics fix it on Thursday. This is after I changed a right rear speed sensor. That should darken the dash. Edit: Too bad Gene didn't live closer. I'd have him do it. |
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10-17-2021, 2:02pm | #4 | |||||||
10cm member
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Quote:
Have you people never heard of electrical tape? |
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10-17-2021, 2:32pm | #5 | ||||||
Barn Stall Owner #2112
Fantasy Football Champ '14,'16,'20 Bantayan Kids '13
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10-17-2021, 4:00pm | #6 | ||||||
Barn Stall Owner #THX1138
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A 2015 with 120k miles? I have a 2004 2500HD with only 70K - want to trade?
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10-17-2021, 4:04pm | #7 | ||||||
Barn Stall Owner #1120
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[WEZzie]Shoulda bought a Silverado.[/WEZzie]
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10-17-2021, 6:53pm | #8 | ||||||
Latin American Goat Roper
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That's about the same as on wife's 2001 250k miles Focus, twin cam engine.....no spark on #3 cyl.....so I bought a new sender unit....measured the coils on it, and going to compare to the one in the car tmrw AM......
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10-17-2021, 7:10pm | #9 | |||||||
Barn Stall Owner #2112
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Quote:
And don't forget to FOCUS !!!! |
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10-18-2021, 6:39pm | #10 | ||||||
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10-18-2021, 8:49pm | #11 | ||||||
Chief Electrician
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Turned out to be a bad fuel injector. Whew. Expensive fix BUT at least the heads don't have to come off. That had me nervous.
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10-18-2021, 9:37pm | #12 | ||||||
A Real Barner
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10-18-2021, 10:32pm | #13 | |||||||
Chief Electrician
Barn Stall Owner #7734 Bantayan Kids '15
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Quote:
Pull the fuel rail (under the intake) Remove all the injectors and replace with new Replace the rail Replace the intake. I most likely could have done it, but this work has a 30,000 mile, 3 year warranty parts AND labor. Let them have their fun with it. |
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10-19-2021, 2:09am | #14 | ||||||
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Yeah, works great, but I only use it for RED idiot lights. CEL is a dull yellow and doesn't need tape.
The deactivation device for AFM has a bright BLUE LED but it's down by the pedals and helps locate things dropped on the floor. Also not distracting enough to need tape. |
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10-19-2021, 3:36am | #15 | ||||||
A Real Barner
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Found your problem:
2015 Sierra Denali |
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10-19-2021, 8:45am | #16 | ||||||
Chief Electrician
Barn Stall Owner #7734 Bantayan Kids '15
Join Date: Jan 2011
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Posts: 44,434
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Gameroom Barn Bucks: $107478
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10-19-2021, 9:05am | #17 | |
Explosive Salami
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