Check engine light

[Joeblow760]

My 2018 Silverado has the check engine light on it’s throwing 2codes P0700 and P2535 the dealership is telling me that because my headlight is getting moisture it’s causing the TCM to stay on all the time has anyone had this problem 

[SS502]

1 hour ago, Joeblow760 said:

My 2018 Silverado has the check engine light on it’s throwing 2codes P0700 and P2535 the dealership is telling me that because my headlight is getting moisture it’s causing the TCM to stay on all the time has anyone had this problem 

So are they gonna change the headlight? It’s a warranty piece. Just had mine changed a few weeks ago because it would not adjust and was pointing too far down. The right side was too low.

[Bash74]

Then why didnt you have them change the headlight out.

[JimCost2014]

On ‎2‎/‎22‎/‎2019 at 2:16 PM, Joeblow760 said:

My 2018 Silverado has the check engine light on it’s throwing 2codes P0700 and P2535 the dealership is telling me that because my headlight is getting moisture it’s causing the TCM to stay on all the time has anyone had this problem 

Welcome to the site! As long as you have the bumper to bumper warranty, don't ever by shy about using it, things go wrong, best to get them fixed while it is free for you.

[Joeblow760]

37 minutes ago, JimCost2014 said:

Welcome to the site! As long as you have the bumper to bumper warranty, don't ever by shy about using it, things go wrong, best to get them fixed while it is free for you.

It’s not covered under warranty my headlight got broke by a piece of flying debris from a semi truck and now they are trying to say that is what is causing my TCM to stay on all the time and drain my battery 

[Joeblow760]

44 minutes ago, Bash74 said:

Then why didnt you have them change the headlight out.

I asked them to it sat at the dealership for a week and they didn’t touch it after I met with the service manager and shook his hand and told him to continue forward to fix the problem 

[JimCost2014]

1 minute ago, Joeblow760 said:

It’s not covered under warranty my headlight got broke by a piece of flying debris from a semi truck and now they are trying to say that is what is causing my TCM to stay on all the time and drain my battery 

Bad luck on the headlight, but great opportunity to see what kind of dealership you are dealing with, to see if they want you back as a repeat customer. See if they can make you a deal, help you out with the cost of a replacement, or find a fix, if they balk or do not want to help, shop around until you find a dealer that will help you, guarantee someone wants your business.