Duramax Sixth Generation: 2017-2019 (L5P)
Hi guys,
I'm new to this Forum. I have a 2018 2500 HD 6.6 Durmax (93,000 miles) and having problems with CEL code P026D. I've cleared it twice and it's back again. First I cleaned the Map sensor and replaced it , but CEL came back. Then I put in a S&B Map Spacer and New Map sensor then...