ConquerCustom
TYF Newbie
- Joined
- Aug 29, 2024
- Posts
- 2
- Reaction score
- 6
I have a 2018 Tahoe with a P135a code. It’s only running on the passenger bank.
I checked all the fuses, they look good. I checked the voltage at the plugs and while running, the far left plug (pin 4) is over 12v the other 3 are grounded.
I unplugged 1 from the passenger bank while it was running and it read the same so I guess the power at the harness is correct?
For funsies, I put my spark test light on and the coils are definitely firing the drivers side.
Now I’m stumped on what to check next.
I checked all the fuses, they look good. I checked the voltage at the plugs and while running, the far left plug (pin 4) is over 12v the other 3 are grounded.
I unplugged 1 from the passenger bank while it was running and it read the same so I guess the power at the harness is correct?
For funsies, I put my spark test light on and the coils are definitely firing the drivers side.
Now I’m stumped on what to check next.
Attachments
Last edited:
