First Problem

[Padraig]

My 2023 Suburban has about 41,000 miles. Absolutely no problems. Today I looked down and the check engine light is on. All the gauges are in the good zone and diesel running fine. I don't have a reader so will call the dealer, Monday.

Padraig

 

[OR VietVet]

You can get a decent quality reader for less than $50.

https://www.amazon.com/gp/aw/d/B01N6RKE29/?_encoding=UTF8&pd_rd_plhdr=t&aaxitk=ff1df7b3b9bda622e73501a25cabf001&hsa_cr_id=7142921760401&qid=1771123546&sr=1-3-9e67e56a-6f64-441f-a281-df67fc737124&ref_=sbx_s_sparkle_sbtcd_asin_2_title&pd_rd_w=oSkpR&content-id=amzn1.sym.9f2b2b9e-47e9-4764-a4dc-2be2f6fca36d%3Aamzn1.sym.9f2b2b9e-47e9-4764-a4dc-2be2f6fca36d&pf_rd_p=9f2b2b9e-47e9-4764-a4dc-2be2f6fca36d&pf_rd_r=44VXG91N18PYD2CVE8WA&pd_rd_wg=98KnC&pd_rd_r=96c4a494-f95d-4276-ac6b-3c081ae9365c

 

[Padraig]

Thanks! I used to have the plug in Fixd devise but forgot that it was in my old suburban when I traded it. The unit you posted looks good. I will likely get it to the garage, tomorrow but will order one to have on hand.

Padraig.... Also a Vietnam Vet, 198th LIB

 

[Stbentoak]

Most likely an emissions issue. It never hurts to have a code reader around. You can buy cheap ones. But I found it's worth having one that's a bidirectional one, so you can also cancel codes at home if you have fixed the problem yourself. Anytime you have to visit the dealer, it's just a pain and they usually want to try to jack you around and do more work than necessary.