The Cadillac service mgr says he does not hear anything. I was told that it was an engine error and to take in for service. New fluid has additive that will last longer and does not break down over time. Cured by replacement of diff fluid every 40,000 km, again according to garage. They are making no attempt to fix the car at this time. When I tried to drive the car from it's stuck position from the middle of the road, the exact same thing occurred 5 mph. You do not want to jamb the screwdriver way in there.
Put the car up on the hoist, engine running, transmission in drive. Noise comes from rear of vehicle. Once able to stop I called onstar and asked them to give me a diagnostic. The car was towed to a dealer. Provide details and share your research! The failure mileage was approximately 150,000. The technician tightened the drive shaft bolts to the transmission; however, the failure recurred after the vehicle was repaired. I will put the long hose into the fill hole, and them pump the thing until fluid starts coming out the fill hole, indicating that the case is full to the plug hole.
Last night, I did finally look up above the tunnel heat shield and there is a carrier bearing on the drive shaft, so that is one more possibility. You see two bolts there. On way home from work the following day on i75 driving 70mph which is the speed limit, the car started making a loud clunking sound and was nearly impossible to steer. Dealer said that Cadillac would not do anything about the problem. The vehicle was taken to a dealer where it was diagnosed that the rear differential needed to be replaced. I used a mechanic's stethoscope on the transmission, transfer case, rear differential and wheel bearings.
Serviced rear diff and test drove found noise went away, no other repair needed. Now, there is no drain plug on this case. The contact stated while driving approximately 40 mph the vehicle accelerated on its own. Use both ends of the 10-mm allen wrench to loosen the fill plug. This is a well reported issue 109 occurrences found on line for these cars. Replaced gasket 30645 km Rear drivetrain whine at 60+ mph. The contact stated that while driving approximately 65 mph, she heard a loud bang and the wheels locked.
Both the driver and passenger doors were bent. They didn't even offer to come and get me when I could see the building from where I broke down. Per doc id 4013532 recommend servicing rear diff with new fluid. Light a Marlboro, take a break, and get ready to move to the middle of the truck, down the centerline, behind the transmission. The same rear end is on Cadillac sts, Cts-v and these rear ends were continued to be placed by gm, without fix, in Cadillac Cts until 2013. It was like that for over one year, and I finally found time to take it in.
The drone is constant, distracting and annoying while driving. You can look them up on a site like As you can see from the example codes I have listed at the bottom that this vehicle has positive traction and a 3. The contact stated that while driving at low speeds and making a turn, he would notice a loud grinding noise coming from the vehicle. My car is a 2011 that just had a new rear differential from gm put in to solve its issues. I discussed this also at length with service manager of sewell Cadillac in dallas texas and they state that they replace these rears all of the time and that there is not fix for them by gm. The dealer did not even remove the differential first to determine the damage or diagnose the cause.
The vehicle then spun out of control through three lanes of traffic to the shoulder. I bought the car new and there has been a problem has been with this car since I took delivery from the Cadillac dealer. I had onstar for the entire life of the vehicle. The contact stated that the differential leaked and the vehicle became inoperable without warning. Now we remove the drain plug with a 13mm wrench.
A clunk noise after shifting or slowing down. On my way to the service appointment, the transmission failed one mile from the dealership on a busy highway. When I spin the rear wheels by hand, not only can I hear the noise that is depicted in the vids, but I can also feel it in the wheels. I don't want to be driving down the road with children in the car and have problems then. Walked around car and nothing wrong with tires. I had to get assistance from other drivers and security guards to help push the car out of the ramp exit lane.
Why has Cadillac not issued a recall and affected a fix? The differential has been replaced and there has been no problem since. There were cars lined up to exit the parking ramp behind me. There were no warnings at that time that my transmission was failing. Nearly had accident while trying to get to shoulder of road. The manufacturer was made aware of the failures and opened a case. Did not fail, preemptive upgrade. Fill plug is out, came out no problem.
This is important as there are metal particles collected on this plug, which is normal. That bowling-ball shaped rear cover plate is held on with bolts all the way around. Pat yourself on the back, you have now completed 2 of the three cases!! Here we have the Transfer Case. In forums every where I am reading that the differential first leaks and then grenades. This case took about 1. The car had to literally be dragged onto the tow truck cause the rear wheels were frozen in place. I am not sure if a mechanical component is going to fail.