Fórum Chevy and GMC Duramax Diesel Forum

Haven't seen this in a while. i Paid 3.71 the other day for diesel, and i have seen it as low as 3.69. what are y'all paying for diesel

21 3.0 used to go 640 miles average between regen which reduced to about 200 suddenly. 99% highway miles. Over the last week the regen percent and the soot load generally match or are within 1% of each other. I used to not get above 40% soot load. Now I’m over 60% in about 80 miles. No boost or intake leaks that I can find TMAP sensor is clean and has been replaced in the last 10k miles. DPF differential pressure is reading 0 psi when off which is correct. My shop level scanner is showing... Sudden frequent regen

Recently put a 6" BDS lift kit & 33x12.50R22 Nitto Ridge Grapplers on my 2025 RST 4x4. As expected, took a hit on MPG's. What i was not expecting was almost a 7 MPG hit. I went from averaging about 29.5 MPG to 23 MPG. I've also went from averaging about 250 miles in between REGENS to about 140 miles. I know the change in aerodynamics with the lift kit is a contributor, along with wheels and tires that are almost DOUBLE the weight, wider tire, tread depth etc. Just curious what everyone... 3.0L LZ0's with lift kits and/ or aftermarket wheels and tires - Efficiency drop?

Hello Duramax Brothers I have a 2021 Silverado 2500hd LTZ CREW CAB. I want to remove driving light bulbs and replace them with yellow or amber LED Bulbs. Has anyone done this and if so what bulbs do you recommend Thanks

Hello Duramax Brothers I have a 2021 Silverado 2500hd LTZ CREW CAB. I want to remove driving light bulbs and replace them with yellow or amber LED Bulbs. Has anyone done this and if so what bulbs do you recommend Thanks

Anyone experience this code? Did a search on this site but nothing came up. It’s a radiator coolant sensor error. All the data looked good on my iDash so I cleared the code. Coolant temp was fine as was the other fluids. I’ll keep an eye on it to see if it pops back up. https://www.autocodes.com/p00b5_chevrolet.html

I got a 2011 3500 denali with a lift on alcos and other work, where can i mount my train horn

I got a 2011 3500 denali with a lift on alcos and other work, where can i mount my train horn

Hello guys my 2007.5 duramax lmm shifted to 4lo now it’s stuck in 4lo while I put shifter in D or R it will sit there will not drive forward or backwards idk what to do I can put it In P and roll it forward and backwards it acts like the transfer case is in neutral please help and god bless

Hello - love this truck except for the trans downshift / hold weirdness when going down a hill - and its even more pronounced when pulling a trailer. The scary part is it zings the engine rpm's up pretty high and I have not found a found a way to get it to engage at a more reduced level. I get the concept to assist with keeping the truck at speed but its overly aggressive and I also worry about engine damage. Anyone here experience this same weirdness and found a good workaround? What... 2026 HC 2500 D-Max trying to save me

Have a 2021 L5P with 145k miles. Love this truck it is deleted and runs great. Recently I’ve been noticing this tick/rattle at around 1200rpm to 2000rpm (then the tires and exhaust drone it out). I have a CTS3 and monitor a lot of PID and injector balance rates. My boost and vane positioning looks great, all temps are great, EGTs are great, also don’t have any miss fires on cylinders 1-8. However when I accelerate or decelerate there is a notice tick or “chicka” that is driving me nuts. I... L5P tick/rattle with RPM

Looking to find out why my duramax will start for 2 min then shut off then just turn over