2008 Suburban 2wd 6.0 p1682 code

[chlebuk]

I'm brand new to the forum so I hope im doing this in the right place. I've got an 08 that was recently in the shop to get the rear engine plate gasket replaced due to a serious oil leak. Well the latest issue is a p1682 code that came in. It was cranking and starting but running on a couple cylinders, then the next time I would crank it it would crank an not fire. I thought it may be the ignition switch so I just replaced that an that did not help. Having the same issues. Could yall possibly give me a direction to head in? Thank ya in advance.

 

[chlebuk]

To clarify, it is very sporadic. I am driving it today and have had no issue but it is not reliable.

 

[zora]

There is a service bulletin that covers your code and vehicle. It points to the PWT/TRN relay having a corroded connection.

 

[chlebuk]

Thank you for responding. How do I view the remedy for this issue

 

[zora]

Thank you for responding. How do I view the remedy for this issue

You check the relay for corrosion and if present replace it.

 

[chlebuk]

Thank you. I was thinking the corroded connection would be in the fuse block between fuse and harness connections. I should have specified a little more. I have swapped relays and no change.