I stay in Texas Would it affect my license if im one day late renewing my medical card

Your CDL is invalid when your medical card expires. You can drive a car but not a commercial vehicle.

 

I don't know, but I can not believe they don't have some sort of "grace period" that would probably go out 15 or more days before anything gets turned off. And I suspect you'd get a "Notice" in the mail shortly before they proceeded to any drastic measures.

 

dotphysicaldoctor.com/tx/

Keep Your Medical Card Current With Texas Department of Public Safety
Drivers are required to keep a current medical variance or medical examiners certificate on file with DPS, and failure to do so will result in the downgrade of the individual’s CDL.

You must provide a copy of each new DOT medical card to the Department prior to the expiration of the current DOT medical card.

To prevent your commercial driver license from being downgraded, you will need to send a copy of your new DOT medical certificate to the Department within 15 days of the DOT medical certificate issuance date.

You may submit your new medical certificate by mail, fax, or email, as described above.

 

Self certification form

http://www.esc11.net/cms/lib3/TX21000259/Centricity/Domain/497/CDL-7.pdf

 

This is such an important item to your lively hood why would you even think of cutting it close? Start a minimum of 60 days out to get in compliance. There is no reason not to.

 

Absolutely. An expired medical card means you are unqualified to drive a commercial vehicle. I do believe you have a one year grace period to get it done and not have to retake the tests. If you get your physical in the morning do the self certification and send it to DMV and nothing else will be needed on your part. You do not wanna get stopped driving that truck with an expired medical card.

 

YES an expired med card means automatically downgraded license
When you get your new card it won't matter until it is matched to your license by the state and according to our safety director some states have taken up to two weeks to get it done in their system