Nov 17, 2025 · L5P Loud vibration when towing up hill larry.hayes.75 Oct 15, 2025 Replies 7 Views 161 Oct 17, 2025

Dec 23, 2024 · I have a 2017 2500HD LT L5P with a "DEF EMPTY" issue which the tank is COMPLETELY FULL. WTFO? The DEF pump was just replaced 5 months ago and has been …

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 …

Feb 23, 2023 · I just purchased a 2018 L5P with 184k mi. I have a 'Service Exhaust Fluid System' message; followed by 'See Owner's Manual Now'; then '58 Miles Until 65 mph Max Speed'. I …

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 …

May 2, 2018 · New 3500 Denali bought new about 2 months ago. It has 1800 miles on it. while getting on the freeway at 35-45 mph relatively light acceleration truck stumbles I cant tell if its …

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 …

Jan 3, 2025 · Did you install another factory fuel pump, or an aftermarket lift pump? I'm looking for a high-capacity factory replacement. 2024 Chevrolet 3500HD Z71, LTZ, 4x4, 6.6 ltr. L5P long …

Jan 30, 2025 · '17 l5p LTZ okay so at first it was giving me a little starting issues but day or 2 after it just would not start back up.. I cracked a hp line at the rail during prime closed her up and …

Apr 10, 2021 · What’s going on fellas. So I have a buddy of mine with a 2018 L5P and he wants to install a bigger turbo, I see a few of these YouTube guys have the stealth 67. But I wanted to …