April 15, 2007I wanted you all to know about the overheat issues GM is having with there LLY Duramax. I have 65000km on the truck and have gone through water pumps, bypass valve, injectors, GM so called fix for the overheat (2006 LBZ airbox) and overheat all the time. GM does not warranty the product is it is an engineering flaw. There are thousands of people having these issues and GM is ignoring the ones without lawyers. I hope you don't have any serious issues with your vehicles as GM has bullied me and my wife. Regards kev
Forums : General Discussions : GMC Duarmax Oveheat (3021 Views)
Subscribers : Kev
April 15, 2007I don't know how GM is with their warranty, but is it blows up due to overheating it would be under warranty, would it not.
Also an overheating motor will slowly start breaking things, it puts a lot of stress on gaskets and the upper end of the motor along with Piston rings.
My Uncle had the Duramax in his GMC ( I believe it is a 2006) replaced under warranty. He was pulling a trailer and it went from running normal to pegging the temp gauge in about 1/4 mile. Computer shut it down and it never turned over again. All fluids were OK and full along with the Thermostat working properly. It had 16,000 miles on it.
Now he is waiting for the 6.4 PSD or the new Cummins to get all the bugs worked out and is getting away from GM.
April 15, 2007it sounds as tho the 6.4 is havin troubles of its own also.... i have seen this overheating trouble with my buddies truck also.
May 4, 2007i'm not sure about the cummings having problems, its not a new motor. its been in bigger trucks for a few years and i have not had any problems with my 6.7 cummins with 6 speed auto. love the power and towing has got to be better than a ford bronco...i have less than 700 miles on it and only had get gas 1 time so far. cumming are very quiet and very fast. did a sprint with a crown victoria and beat him by at least 30 feet upto 100 then we pulled over and had a chat no ticket but put my friend in a bad mood. he is a state trooper that hates to get showed up..lol its nice to have lawdogs as friends.. i would not think twice about getting a new dodge cummins but then thats why i got 1 and a real good deal on it. search for your deals now when you do not need a vehicle you can walk off and get a better deal.
June 12, 2012could a T-Rex aftermarket wire mesh grille interfere with air flow enought to cause overheating?Temps ok on flat but while pulling 8k rv up 5%grade eng temp went up to 240!! Tranny at 180. I have a Diesel Domination after market tune with DPI delete and 60hp add.