Dec 3, 2025 · L5P Loud vibration when towing up hill larry.hayes.75 Oct 15, 2025 Replies 7 Views 175 Oct 17, 2025

Jun 3, 2024 · L5P: - Glow Plug Control Module and PIP 5523 Hi there. I am just trying to get a discussion going with L5P owners that are having glow plug DTC codes (ie P1338, P1339, P133A, …

Jun 13, 2017 · L5P emissions Given the number of individuals complaining just on this forum in just the past few days, there has to be a significant percentage of owners of 2017 Duramax's having …

Oct 6, 2020 · 4000 Kms and the check engine light comes on. Diagnostic says the #8 injector needs to be replaced and 2 others are questionable. Coincidentally met another guy with the same truck …

Sep 27, 2024 · It was wrecked, it’s possible the doc or dpf or scr are broke and plugging the exhaust. After driving that first few miles it started plugging all flowing holes up. What’s your maf sensor …

Mar 21, 2024 · Ive got 90000miles have never had any trouble. I pulled up to a stop sign and boom engine missing. Didnt think I was going to be able to pull away. Got it home and connected my Snap …

Mar 18, 2020 · Thought some might find this interesting. This is a local shop in Minnesota that a friend of mine owns. The Edge is pretty impressive for being emission’s intact.

Jun 10, 2021 · Wondering if any of you l5p gurus have some failure analysis input for me.So this truck came to me with a miss on one cylinder and a pop out of the intake,pulled the valve cover and found …

Apr 24, 2025 · I have a 2017 L5P, it’s deleted and tuned. Had a head gasket failure. Ran fan coming in my shop started great, sounded great etc. get the cab back on, plug everything up whole nine, crank …

Feb 16, 2017 · New to forum. Purchased my new 2017 cclb high country last week. Today driving it the check engine light came on. Scanned it and it picked up two codes P0299 and P11CC. First code is …