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Ideally, you would want to regen while driving. Regening while stationary uses a lot of fuel and would negatively impact your fuel efficiency. Might as well be going somewhere while the regen system goes thru its cycle. If my regen cycle starts when driving and I know it won't be complete when I...

Are you talking about the oil and/or coolant temps? Over 210F is normal for those. Transmission temps should be about 195F. For Exhaust Gas Temps, when regenerating, you should see 1000F+, maybe as high as 1200F (538C to 649C).

Now that the weather is warming up a little (still 32F this morning), I'm seeing more consistent 30+ mpg per trip. I did switch tires last October and saw my mpg drop a little. Went from the Bridgestone Alenzas that came with the truck to Cooper Discoverer + Trail AT. They look great on the...

Welcome aboard!

Welcome aboard!

Sounds like the previous owner kept it well maintained. The only major upcoming maintenance will be the recommended replacement interval for the belt that drives the oil pump in the LM2 at 150,000 miles. The belt is located at the back of the engine which will require the transmission to be...

As mentioned in another forum, you've lost whatever remaining warranty you had by working on it yourself. I would have found another dealer to handle it. Good luck.

VIdeo on diesel fuel additives which I found interesting.

Welcome! I take the one off posters that seem to come on forums just to write long convoluted sob stories about how bad their new trucks are with a grain of salt. They are just usually just one or even a few posts and they're gone. I'm sure there are a few that have issues, but I don't believe...

If you can smell antifreeze, you have a leak somewhere. It may be small and probably evaporates when it comes into contact with a hot engine part. Have had this happen to me on previous trucks. One was where it leaking from a valve cover bolt hole of all places. Defect in the engine which...

Also affects Chevy trucks. Service Update number N242478260.

Which motor are they putting in? LM2 or LZO?

I use the meters on truck to give me a general sense of how efficient I'm driving. I hand calculate every tank when I fill up. I have the Elevation trim, Crew Cab with standard 6' 7" bed. 3.23 gear ratio, tires are 275/60R20.

They are close but I would expect it to be different since driving conditions can change throughout the month. It will depend on how much driving you do. Around home, I only fill up about twice a month. On road-trips, it'll be more of course. Weather can have a big impact also. I'm noticing...

I have two trip meters. One I reset every month. The other is reset when I fill up. I hand calculate and found it's fairly accurate compared to the trip meters. I also reset my 50 mile meters every fill up.

Which tire did you switch to?

My Sierra 1500 with LZO came with Bridgestone tires. I noticed at freeway speeds, a more bumpy or slight vibration. I increased the tire pressure from 35lbs to 39lbs which seemed to help a little. I'm not totally sure whether it's just the tires or the shocks or a combination of both. Any...

Best tank of fuel mpg was 33.6 during a road trip to Spokane.

The only true way to calculate accurate MPG is miles driven divided by gallons used. The various dash readouts are good for providing a general sense of efficiency. I track my mpg on every tank religiously by using the Fuelly app to track trends and to also make notes of driving conditions I...

I have the same color! Congrats on the new ride!