Truck was in a regen mode but my driving consisted of stop and go and a short trip home. Just wondering if anyone knows what rpm would be needed to clear the filter when parked?

I don't think it can be cleared when parked, unless you have a tech2 to command a regen.

I believe Paul is correct. The truck has to remain above 35-40 mph for approx 20 minutes to complete a regen cycle

Yeah, next time you have somewhere to go, try to make it a 20 mile or so drive which will usually get you close to cleaning it out. I love my Edge because I can see how many soot grams the computer says the dpf has so I know about when it will regen. If you don't want to do a chip (which will void your warranty) you can get the Edge insight which won't, just another cluster of gauges that's pretty inexpensive. Just a thought.

^^^ Thats what I did, love the insight

Odd cuz the current large transport trucks when into a regen they can pull over and the engine will run over approximately 2000 rpm till the regen completes itself. I stopped in the driveway the engine was still in the regen (rpm's at or above 800), ran the engine up to 1500 for about two minutes and the engine completed the regen. thus the question.

I wish that the general would give you your soot levels and the ability to start a regen, even if not completely full of soot. I just spent two days stuck in regen last week city driving and not only is the smell terrible, but I lost 10% of my oil life in two days. It seems to drop like a rock while in regen in the city.

If the general had given the ability to start a regen, I could work these into my higway driving and not only save my oil, but save on the amount of fuel it takes to complete. I know that many say that its less than a gallon, but I beg to differ if its not a full highway regen.

If the operator did not proactively start the regen in an optimal time/place, then the truck could start the regen when it felt like it.......like it does now.

My blood pressure quickly rises when I start a regen in the city watching my fuel and oil life drop like a rock....the smell is just icing.

gotta run this past the GM people cuz driving or parked to me seems the same long as your rpm's are up where they should be. Will for sure take some edge off somewhere.

It will stay im regen as long as it's in gear. Put it in P or N and she will quit*. (I have a DashHawk). I have set the parking brake and left her in gear to run into the post office, to keep things cooking. I have a 7.5 mile commute, and it takes 2 of those if the regen just started. If it starts in the middle of the commute, will take part of a a 3rd trip to or from work.

*Sitting parked all day in the parking lot the grams actually burn down - seems things keep cooking in the DPF when she's off though.

;)

It will stay im regen as long as it's in gear. Put it in P or N and she will quit*. (I have a DashHawk). I have set the parking brake and left her in gear to run into the post office, to keep things cooking. I have a 7.5 mile commute, and it takes 2 of those if the regen just started. If it starts in the middle of the commute, will take part of a a 3rd trip to or from work.

*Sitting parked all day in the parking lot the grams actually burn down - seems things keep cooking in the DPF when she's off though.

;)

Thanks for the wink Jimmy. Mine stays at the 800 RPM's regardless of gear selection. And mine takes about 25 highway miles to clear out. I'm sure that my truck keeps burning off soot while in the parking lot :rolleyes:

It will stay im regen as long as it's in gear. Put it in P or N and she will quit*. (I have a DashHawk). I have set the parking brake and left her in gear to run into the post office, to keep things cooking. I have a 7.5 mile commute, and it takes 2 of those if the regen just started. If it starts in the middle of the commute, will take part of a a 3rd trip to or from work.

*Sitting parked all day in the parking lot the grams actually burn down - seems things keep cooking in the DPF when she's off though.

;)
just asking the question, but if it quits the regen then why does the engine run at 800 or above. kinda stupid elevating the idle for no reason. If a tech 2 can call for a regen then what happens. does the mechanic go for a joy ride for 20 minutes or does he call for the regen then go grab a coffee?

No with the tech 2, he or she can "reprogram" in a a sense the code that forces a regen without being in a gear for the duration of a regen.

I'm not sure if mine continues a regen in Neutral or not. I know it stops the regen in Park. All it takes is to get above 160 degrees ECT, then above 30 MPH once, and it will complete a regen in city traffic (even if stopped at a light.)

I've also figured out that it will want to regen any time the grams gets above 40, or any time it's been 14 engine hrs since the last regen - even if it's less than a tank and only 18 grams. There may also be a miles or gallons burned limit, but I have not identified those yet.

I'm thinking the guy forces a regen, nothing special outside of that happens and he grabs a cup of coffee.

With the Edge you can force a regen too. Once you do that, the idle will increase to ~2000 and will burn off the soot. When the dealer does it they supposedly have to put fans on the engine with the truck outside to do it is what I've heard, you can't drive the truck when it's in the forced regen caused by the Edge or Tech 2 computer.

With the Edge you can force a regen too. Once you do that, the idle will increase to ~2000 and will burn off the soot. When the dealer does it they supposedly have to put fans on the engine with the truck outside to do it is what I've heard, you can't drive the truck when it's in the forced regen caused by the Edge or Tech 2 computer.

This is what I was wondering. What rpm do these need to complete a cycle if parked. But, if the stock engine (no edge etc) goes into a regen and doesn't finish during my driving can I get the regen to complete sitting/parked or whatev in my driveway/shopping mall/bar etc? Shutting this truck down in the drive without it finished leaves it one hot stinking monkey!