New to the forum and pick ups

[anthonyrr]

Hey all. I recently picked up a 2016 Sierra Denali with a 5.3.  It has 39000 miles. Out of manufacturers warranty I opted to purchase the third party warranty. The day after I bought it the power step on the one side stopped working.  I brought it to gmc service and it was a bad wire harness in the driver door.   Fast forward 8 weeks and the check engine light came on. P00f4, p0101,p0102,p0097,p2199 where the codes that came up.  Brought it back the dealer and the changed the mass air flow. Did a reset test drive and threw a code for the engine ecm. Changed it Cleared it test drove it and the map sensor through a code.  Changed that cleared it and now there is a voltage issue on those circuits and posssibley a bad ground somewhere that can’t be found.  Dealer has been on tech support with gm and it going on a week now.  Dealer is stumped as well as gm.  This is my first truck and I’m new to the forum.  I hope I posted this in the right place. I hope my issues get resolved and some people here have seen this before.   Thanks in advance. 

[EpicLT]

4 minutes ago, anthonyrr said:

Hey all. I recently picked up a 2016 Sierra Denali with a 5.3.  It has 39000 miles. Out of manufacturers warranty I opted to purchase the third party warranty. The day after I bought it the power step on the one side stopped working.  I brought it to gmc service and it was a bad wire harness in the driver door.   Fast forward 8 weeks and the check engine light came on. P00f4, p0101,p0102,p0097,p2199 where the codes that came up.  Brought it back the dealer and the changed the mass air flow. Did a reset test drive and threw a code for the engine ecm. Changed it Cleared it test drove it and the map sensor through a code.  Changed that cleared it and now there is a voltage issue on those circuits and posssibley a bad ground somewhere that can’t be found.  Dealer has been on tech support with gm and it going on a week now.  Dealer is stumped as well as gm.  This is my first truck and I’m new to the forum.  I hope I posted this in the right place. I hope my issues get resolved and some people here have seen this before.   Thanks in advance. 

Sorry you are having issues - but I wanted to assure you that you are indeed in the correct spot! Have you tried using the search function for any of the error codes? Or are the codes cleared and now it is new issues?

[anthonyrr]

I did look up some codes. I was hoping my problems where familiar to other members 

[Mandalorian]

Might be a lemon

[dieselfan1]

Try a different dealer.

A new set of eyes might be able to solve the issues you are having.

I doubt it's a lemon.