Uh oh!!!!!

[blazzinbird]

so my wife’s 2008 Yukon Denali with the 6.2l just threw saveral codes.

P0300 random misfires
P1174 fuel trim cylinder balance bank 1
P1175 same but bank 2

Taking to the shop tomorrow, thank Jesus I bought s warranty with it.


My wife pulled it in the garage tonight, and it wasn’t happy. Shaking, making all kinds of noise.

 

[Rocket Man]

Keep us posted.

 

[blazzinbird]

I want to add, I reset the codes and turn it back on and it runs fine for a little bit.

 

[Tonyrodz]

I want to add, I reset the codes and turn it back on and it runs fine for a little bit.

Don't reset the codes before bringing it in.

 

[dubyagee01]

Do yourself a favor and check the air filter, throttle body and for vacuum leaks

 

[blazzinbird]

Codes were reset, but didn’t make it a block before they came back.

They think it’s a sensor.

They gave me s 06 Yukon Denali to drive till it’s fixed.

 

[09_4WD_YUKON]

Most likely O2 sensor and ignition coil

 

[blazzinbird]

Update:

The computer shows a weak number 6 coil. So they are replacing that and also changing out plugs and wires.

 

[blazzinbird]

So we got it back Friday

Coil 6 came loose new connector.

Also had a oil leak was very low on oil.

Runs like a champ now