Should I Be Worried?

Dennis1947 · May 23

Just purchased a 26 Silverado 1500 RST Z71.

Been reading about the DFM issues and am worried when will my engine die.

Am trying to get used to driving in manual L9.

Would just like to put it in D and not have to worry about my truck dying.

Am I overreacting? Any advice?

davester · May 23

it's not nearly as bad as it seems. the only things you find online are the people who have had problems, the people who are just using their trucks every day w/o a problem, are just doing that, they aren't posting online that their truck is still working fine.

If you want, you can get a range device that disables dfm, but it is unknown if it makes a difference with how long the lifters will live.

diyer2 · May 23

Use a quality oil. Amsoil, Redline. Best insurance for sure IMO.

Grumpy Bear · May 23

Might find this useful.

Jus Cruisin · May 23

On 5/23/2026 at 1:24 AM, Dennis1947 said:

Just purchased a 26 Silverado 1500 RST Z71.

Been reading about the DFM issues and am worried when will my engine die.

Am trying to get used to driving in manual L9.

Would just like to put it in D and not have to worry about my truck dying.

Am I overreacting? Any advice?

Yes.....to overreacting

Edited May 24 by Jus Cruisin

GMCustomerService · June 1

We replied to one of your other posts regarding your engine concerns, Dennis. Your peace of mind is important to us, and we want to provide a layer of assistance in working towards full confidence in your Silverado. Please fill out our support form here https://s.chevy.com/support-request so our team discuss your concerns in more detail.