[cwalsh2]

I have a 2017 Colorado diesel Lt. It was great for a year. Then the check engine light came on. I took it to the closest dealer (1 Hr drive away). They said it was an EGR code. Drive it and see if it repeats. It was over a week before I needed it, but the next time I drove it the code was back. They replaced the EGR valve.1 1/2 weeks later and the second time I used it steam was coming from under the hood. A hose clamp was not put on straight when the EGR valve was replaced. Next time I used it DEF low. I filled the tank. 150 miles later DEF low again. Back to dealer. They could find nothing wrong. They explained that if there was a problem codes would be set. $82 dollar charge for DEF because DEF fill can not be on warranty. Took truck home. A week later and the next time I go to use it- Low DEF. Back to the dealer! This time they found the problem. When the mechanic replaced the EGR valve he took loose the def hose and did not secure it when he was done. It got against the exhaust and melted a hole in it. Part not available. No reliable truck for over 3 months and down for the hose for a month! I bought a compact tractor 377 miles away and need my truck to go get it! I need the tractor! They gave me a new Silverado loaner, but say I can't take it out of town. I loved the truck till a GM mechanic replaced the EGR valve. Now I am still waiting for a DEF hose to come in to Denny Menholt Chevrolet. Very frustrating for a truck with 14,000 miles on it and I still think it is a great truck. Their mechanic I do not think so highly of.

 

[RollyPollieBenito]

Wow, so sorry for what happen to you. That experience can sour the whole ownership.

 

[Burgess159]

Think I’d tell them to get bent and go get the tractor. Just tell them you did a bunch of driving around town. Unless they check OnStar for where you went (I imagine they can), then they’ll never know. And, their fault for not finding the problem multiple times and charging you for DEF you didn’t need because the mechanic messed up. Seems a fair enough trade.

 

[splitley]

Think I’d tell them to get bent and go get the tractor. Just tell them you did a bunch of driving around town. Unless they check OnStar for where you went (I imagine they can), then they’ll never know. And, their fault for not finding the problem multiple times and charging you for DEF you didn’t need because the mechanic messed up. Seems a fair enough trade.

Sue them!

 

[cwalsh2]

After 5 weeks waiting for the def hose, I got my truck back. I checked fluids, Changed oil with Valvoline, dexos oil, and left on the 850 mile trip! Saw a tornado, 3" deep hail on road, fought severe winds etc. At times the colorado had a bad vibration. It seemed like an engine miss. It seemed to start as the tranny would downshift on a hill. Once I could feel a miss at idle while setting still at a fuel stop. 2/3 home it straightened out and ran fine for the remainder of the trip. I pulled a 900 Lb. 6' x 12' flatbed trailer empty on the way and loaded with a 2400 Lb. compact trailer and loader on the way back. Fuel economy was 25 MPG which I was very happy with. After getting home I checked fluid levels again, and coolant was low. It should not drop 2" in 850 miles. The intermittent vibration cause? Anti freeze getting into a cylnder? Transmission shudder? It almost seemed like a loud grinding noise. Noise was mostly when it was pulling hard. the noise/ vibration would stop as I got over the hilltop and the engine was no longer pulling hard. Engine temp stayed on the cool side. I checked tranny temp several times and never saw it over 200. It is a 2017 model with around 18,000 miles on it. I will call the service writer tomorrow. He was very good and in my corner through this ordeal.

 

[Burgess159]

Yea. Definitely get back with the mechanic or a mechanic. Something isn’t right.