lennstang

My truck was fine after this, no other issues. I've since traded it in for a '22 model. Same engine and same trim level, RST.

My fuel economy and DEF usage is back to normal since the pump was replaced. Power is back also. I forgot how good this truck goes! Let us know how the ECU issue pans out!

Got my truck back yesterday. New electric water pump installed, running much better and power is back! Turns out this pump water for the turbo intercooler which is a liquid cooled unit. GM is offering me 35000 GM points as a good will gesture for the parts taking so long to arrive. I told the 50,000 would seal the deal for me but they won't budge. So I'll play the waiting game....

I'm still waiting for a pump. Calling GM today. Dealer is clueless when they will see the parts....

Really good info on the 3.0 Diesel. https://static.nhtsa.gov/odi/tsbs/2019/MC-10165111-9999.pdf

Just found this online. Guess there are 2 electric coolant pumps on this engine. Not sure which one is acting up but this is a good read: https://static.nhtsa.gov/odi/tsbs/2019/MC-10165111-9999.pdf

My check engine light is constantly on. I've been using my Dodge Charger as much as possible and only driving my truck when I need to tow my snowmobiles. I believe this pump cools the turbo. Coolant is still flowing but not fast enough when you start working the motor....such as up a long hill or towing. I noticed the ecu pulling power up hills when towing. This must be because the heat building up in the turbo. I'm anxious to have the pump replaced asap. Patiently waiting. I really like this diesel.

22K on my 2020 3.0 Duramax. Just got this code. Electric coolant pump is bad. Turns out they are on backorder! Must be an issue if they don't have any left in inventory.