i own a 2010 silverado Z71 V8... i keep getting codes 219 A & B... ive replaced everything that it says could cause that code with no luck... here's the weird part, i had to take the grill off and while it was off i drove it for some time and never got one of those codes... it wasnt until i reinstalled the grill that i started getting the codes again... does anyone have a clue why that is...

Thank You.

 

Welcome to the forum.

Please go easy on the keyboard. You're making a big mess for us to clean up.
Read the rules in the Welcome section. Double posting is not allowed.
If you need your thread moved to another section, simply ask a mod. Delete the threads you don't need.
Also, using more descriptive titles than just "help" will get you a better response.
When posting trouble codes, post the entire code (letter + 3 digit number) and description.
Engine size and miles wouldn't hurt either.

Thank you.