#Bulletin 18 na 355 manual

They removed the tires to make sure it was not the brakes. I took the vehicle into an independent mechanic. I felt it was coming from the rear end of the truck. The vehicle seemed very sound, but over time a rumbling sound was starting to take over the cab of the truck. In March of 2021 purchased a used chevy Colorado from jake sweeney automotive group in cincinnati ohio.

#Bulletin 18 na 355 manual

In the owners manual it says you should flush your transmission at 72,000 miles. Turns out the fluid chevy used in my transmission was to blame. The rumbling was so noticeable I initially thought my wheel was falling off so pulled over to make sure my tire still had all of it's bolts. It failed why I was driving on a two hour road trip. There were no warning lamps, or messages. My car was inspected and flushed by car dealer (chuck olsen Chevrolet in shoreline wa). Because this has been well documented in many other customer cars, I believe they should be forced to recall and notify all customers and pay for this procedure. This is a safety problem because it could cause the transmission to seize up if not fixed. They also refuse to extend my warranty and cover the remaining $80. Pdf) Chevrolet said this was not covered by a warranty and wanted me to pay $500 to fix their mistake of putting in faulty oil in my truck. The newest service bulletin on this problem is 18-na-355 ( Nhtsa. However they're wrong, if the transmission does not have the right oil and is causing the tcc to slip, this inevitably would ruin the clutch and thus is a manufacturing default and should be replaced at no cost by chevy. Chevrolet never notified its customers because they said this would not harm the truck. The oil chevy had in there was causing the torque converter clutch (tcc) to shudder or slip.

The problem was that the transmission oil Chevrolet had used was failing and needed to be replaced. After some research I found out that Chevrolet knew of this problem and acknowledged it in a service bulletin in 2018.

My car was shuddering (almost like the wheels didn't have enough power) and it felt like I was going over a rumble strip. It just all of a sudden blew both times and left me stranded on the road. Two catastrophic failures of an essential drive train component in a vehicle with 50,000 miles? also in both cases there was no warning of any kind before it happened. This is a known, common issue with gm and they are doing nothing to solve this problem - or even warn their customers of this safety issue. This is now a $1200 repair for something that should not be happening any way. The second time, it is just 8 months past the warranty time (still under the warranty mileage limit). The first time this happened the vehicle was under warranty and our dealer towed and fixed the vehicle. This is very dangerous to have to immediately stop in the middle of the road and then left stranded (especially in the middle of a cold mn winter). In both cases I was driving down the road and the line ruptured and alarms started going off to shut the engine off. The oil coolant line has just failed for a second time in two years on our 2017 chevy Colorado that only has 50,000 on it.