We struggle with making and managing a to-do list that we can actually use. Our work environments can make it difficult to focus. Our mobile devices are constantly pinging us and demanding attention. I know because I build parts all day long and the tighter the tolerance the more they cost to make, repetitively.We’re overloaded with all of the decisions we have to make in a day. Tolerance cost money, lots and lots of money. I bet that took some money to figure out.

Heck, I have heard of injecting rooster comb into body joints to make them hurt less. Do not blame bubbly oil! ORR blame the oil but make the components to run quietly with any oil viscosity! or bubble content.

GM!!! Identify the source of the two parts that hit each other to produce the tick. 00005 (inch) or better and add the same oil from the same barrel, I would bet the farm that these two engines would either both tick or they both would not. If you have two identical engines built with component tolerances to. Whether or not it affects reliability or longevity. If one engine produces a tick and one does not (given identical variables), there is certainly a tolerance issue here that people can easily perceive as a quality issue. Why would GM or any other engine manufacturers produce an engine, for the last 20 years, where 'some tick and others do not'? Money, and NO pressure. If someone wanted to send me a truckload of 100 dollar bills, I certainly could fix this. (ticks like a baseball card in my spokes while moving slowly thru the drive thru though).Ĭould this tick others experience be fixed? Abso fn luptly! Anything can be fixed given enough money and pressure. When I test drove it with 40 miles on it and now over 6,000 miles (same oil that the factory put in it), I do not hear any tick. I have never heard my truck tick while idling. In the event they have additional questions or concerns, please advise them to contact Customer Assistance. Please share the information found in this bulletin with customers who inquire about this condition. Important: Replacing the engine or internal components for this noise will not reduce or eliminate the noise. This noise has no short or long term effects on the engine. This noise is a normal operating characteristic of the engine. Many manufacturers such as Ford, Isuzu, Hino, Mitsubishi and Nissan report a similar condition in their diesel engines.ĭealers should not attempt to compare any customer vehicles exhibiting this noise with other similar vehicles as the noise is different from vehicle to vehicle and this may lead to the incorrect conclusion that the vehicle has a condition. The overall combustion background noise reduction in the new engines made more audible the known ticking. This condition has been present in diesel engines produced for the last 20 or more years (refer to the latest version of Bulletin No.: 02-06-01-022), and does not have any impact on engine reliability and durability. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter. This ticking noise is caused by oil bubbling and excited by the V8 configuration and combustion sequence. All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards. Engine build variation from engine to engine contributes to differences in perceived volume. All 6600 Duramax™ diesel engines have this condition however, some are more audible than others. Customers may also comment about hearing a tick noise in drive through. The noise usually is most noticeable at the rear of the driver's side front wheel well. Some of the above vehicles may exhibit a random ticking noise that is most audible on warm engine in idle and elevated idle condition with fresh oil. North America, and Israel (Export Dealers please contact your Local Technical Assistance Center if there are additional questions.)Įquipped with Duramax™ Diesel Engine (RPOs L5P) Subject: Information on Diesel Engine Ticking Noise #16-NA-372: Information on Diesel Engine Ticking Noise - (Nov 14, 2016) Thank you all in advance for your comments. Why do some trucks tick do and others don't tick at all? GM I AM WAITING FOR A RESPONSE if it's caused by 'engine oil bubbling and excited by the V8 configuration' What engine oils tend to bubble less? So if you have a successful engine oil and your truck DOES NOT TICK, Please post it here. You cannot have certain engine oil make the engine tick noise and others not. My 14 LML and my 15 LML never ticked once. NONE of my other last 7 Diesel trucks tick(4 GM and 3 Fords). I know I am beating a dead horse here slightly, but the ANNOYING engine tick that GM Bulletin(see below) states is normal operation is BULLSHIT.

Ticktick white noise