Hey guys I'm new here.i can use yalls expertise.i have a 2018 gmc sierra 3500 Denali. It's giving me hell got a code p1089.it idels very smooth .but when I exccelerat and get to 20-45 mph it starts to idel high and then low and feels jerky. Any ideas I put new fuel pressure regulator and new fuel filter housing.im just out of ideas any advice would be greatly appreciated..
ramirezjoel237
P1089 code
What’s up guys, I bought a 2017 GMC 3500hd dually about 4 months ago. It has 57k miles on it. Apart from the flatbed and lift kit it’s completely stock. I’ve never had an issue with the truck at all until today leaving work. I started it up and it was idling rough, I could feel it in my seat and...
www.duramaxforum.com
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