[Embers]

Give me all your thoughts about this...

2017 Colorado Duramax diesel, I'm at 44000km, and the truck has been in the shop 14 times in less than a year. Granted, 4 for oil change and 1 for installing winter tires. Purchased new!

To make this short, the three big issues...
-Manifold issues ( posted this issue awhile ago, and the issues are back again.)
-smell of exhaust in cab
-Check engine light stayed on for 630km till I could get it in the shop, and they informed me that the DPF was completely clogged, and they had to replace it. Its warranty, and at $2500 for the part, I'm thankful for that. I received the Emissions Sensor Recall way before my dealership did, so I had to wait a few months to get that done. they did the recall work today, so see how that goes.
When the service guy told me about the DPF, I told him that the truck has never regen'd, and said that obviously the emission's sensor has failed to detect when the particulates were built up enough that a regen should be done. (Our fire trucks have the DPF system, and I've gone through regens many times.)

minor issue... the door open chime keeps randomly going off?
...check engine light came on a couple months(give or take) after I got it. Was told nothing found on inspection.

All and all, I'm at the point of giving the vehicle back. Too bad I can't. This is my first Chevy/GMC vehicle, and I'm extremely disappointed. I'm the first in my fire Dept to own one of these, and I'm telling all the guys to stay clear of this vehicle...for now.

 

[Rockcrawlerdude]

Sorry you’re upset, i would be too. If chevy is fixing your problems and giving you a loaner then they’re doing all that they can to help.

Sounds like you got a turd. Many of us have great trucks. There seem to be a few turds out there, though. Sometimes that happens, How gm handles the problem will show their quality.

Another post you mentioned warped manifold. Clogged dpf could’ve overheated the manifold and warped it? Plausible. Have them check the turbo too

Btw, if you have a scanner you can see how many km since last regen.

 

[Coloradorob]

Give me all your thoughts about this...

2017 Colorado Duramax diesel, I'm at 44000km, and the truck has been in the shop 14 times in less than a year. Granted, 4 for oil change and 1 for installing winter tires. Purchased new!

To make this short, the three big issues...
-Manifold issues ( posted this issue awhile ago, and the issues are back again.)
-smell of exhaust in cab
-Check engine light stayed on for 630km till I could get it in the shop, and they informed me that the DPF was completely clogged, and they had to replace it. Its warranty, and at $2500 for the part, I'm thankful for that. I received the Emissions Sensor Recall way before my dealership did, so I had to wait a few months to get that done. they did the recall work today, so see how that goes.
When the service guy told me about the DPF, I told him that the truck has never regen'd, and said that obviously the emission's sensor has failed to detect when the particulates were built up enough that a regen should be done. (Our fire trucks have the DPF system, and I've gone through regens many times.)

minor issue... the door open chime keeps randomly going off?
...check engine light came on a couple months(give or take) after I got it. Was told nothing found on inspection.

All and all, I'm at the point of giving the vehicle back. Too bad I can't. This is my first Chevy/GMC vehicle, and I'm extremely disappointed. I'm the first in my fire Dept to own one of these, and I'm telling all the guys to stay clear of this vehicle...for now.

I believe this is one of the reasons GM has discontinued the 2.8
Low sales and lots of issues.

 

[6speedTi]

I believe this is one of the reasons GM has discontinued the 2.8
Low sales and lots of issues.

They did?

 

[Coloradorob]

They did?

Sold the plant that made the 2.8 and will only offer them for one more year.
I believe GM will run out of 2.8 diesel engines before the 2.7 ever shows up in the twins.
They will not be built in the USA Like some people think.
The 2.7 turbo gas 4 cyl is the new replacement. And will be available in the upcoming redesign.
To bad too. I really like this little diesel. It returns exceptionally high fuel mileage. And in my book the diesel is amazing.........
But extremely poor support from GM and poorly trained service technicians along with very scarce parts availability with long parts lead times. Cheap sensors running in very high temperatures with a complex pollution control system has taken its toll.
I think the 2.7 will return very poor fuel mileage to. But with its turbo will act a lot like the diesel with lots of low rpm torque....
I believe the redesign comes in 2023?

Part of the problem is small Diesel engines have a very different pollution target. Much higher particulate matter specs for a 2.8 compared to say a 6.6
And the targets are even lower for big rigs....
small diesels have to conform to much tighter EPA pollution tolerance

 

[6speedTi]

Sold the plant that made the 2.8 and will only offer them for one more year.
I believe GM will run out of 2.8 diesel engines before the 2.7 ever shows up in the twins.
They will not be built in the USA Like some people think.
The 2.7 turbo gas 4 cyl is the new replacement. And will be available in the upcoming redesign.
To bad too. I really like this little diesel. It returns exceptionally high fuel mileage. And in my book the diesel is amazing.........
But extremely poor support from GM and poorly trained service technicians along with very scarce parts availability with long parts lead times. Cheap sensors running in very high temperatures with a complex pollution control system has taken its toll.
I think the 2.7 will return very poor fuel mileage to. But with its turbo will act a lot like the diesel with lots of low rpm torque....
I believe the redesign comes in 2023?

Glad I have mine. GM did the same marketing approach with the Cruze diesel. I have both Cruze and Colorado diesels. Win win for me. 56 mpg highway and more torque than I'll ever need on the Cruze. The Colorado so far is exceptional in performance and fuel economy. Still adding mods to my Colorado.

 

[Coloradorob]

Glad I have mine. GM did the same marketing approach with the Cruze diesel. I have both Cruze and Colorado diesels. Win win for me. 56 mpg highway and more torque than I'll ever need on the Cruze. The Colorado so far is exceptional in performance and fuel economy. Still adding mods to my Colorado.

I never seen or even herd about a diesel in the cruze here in Canada.
I think GM didn’t think the Cruze would be a good idea in our winters.
But if you consider what we pay for fuel here I think the Cruze would have been a real winner.
When you take into account we pay 5.00 a gal for diesel, that makes the Colorado one amazing truck because it gets 30 mpg.
It seems Mary doesn’t consider 30 mpg all that relative.

 

[Wsbbdp13]

I've got a 2019 Z71 turbo diesel and this is the second time it has over heated on me I'm at wits end I paid out of pocket the first time but this had nothing to do with the tune as I had removed it before the first head repair witch was done by a GM dealer hear in VT.

 

[Coloradorob]

I've got a 2019 Z71 turbo diesel and this is the second time it has over heated on me I'm at wits end I paid out of pocket the first time but this had nothing to do with the tune as I had removed it before the first head repair witch was done by a GM dealer hear in VT.

Are you saying you had the head gasket replaced?

 

[oak1971]

Sold the plant that made the 2.8 and will only offer them for one more year.
I believe GM will run out of 2.8 diesel engines before the 2.7 ever shows up in the twins.
They will not be built in the USA Like some people think.
The 2.7 turbo gas 4 cyl is the new replacement. And will be available in the upcoming redesign.
To bad too. I really like this little diesel. It returns exceptionally high fuel mileage. And in my book the diesel is amazing.........
But extremely poor support from GM and poorly trained service technicians along with very scarce parts availability with long parts lead times. Cheap sensors running in very high temperatures with a complex pollution control system has taken its toll.
I think the 2.7 will return very poor fuel mileage to. But with its turbo will act a lot like the diesel with lots of low rpm torque....
I believe the redesign comes in 2023?

Part of the problem is small Diesel engines have a very different pollution target. Much higher particulate matter specs for a 2.8 compared to say a 6.6
And the targets are even lower for big rigs....
small diesels have to conform to much tighter EPA pollution tolerance

That 4cyl turbo gas may be a wonder on paper, but it won't last long. They crippled the 2.8 with dumb ass DPF system and used crap parts. Won't be much different for the gas 2.7, but it's wound up much tighter to get those big numbers.

 

[Wsbbdp13]

Are you saying you had the head gasket replaced?

Yes I was told the head was replaced