PA-WOODCHUCK
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- Joined
- Jul 20, 2019
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Did GM dealer find what the issue is? does that engine still use a vacuum pump?. sounds external?
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This is a customer experience gap with Chevrolet selling a really expensive vehicle like this. Customers in this price range expect a certain level of service, the Chevrolet dealers are simply not prepared to provide.
I’ve bought both BMWs and Land Rover’s new in the past, and the service level is definitely higher when there is a problem.
Haven't heard from the dealer yet but yes, it sounded like a diaphragm leaking to us BUT where its coming from, only intake plenum. And the Denver dealer said when he touched the intake he could feel a vibration. I also had something that sounded like a belt squeak 4-6 weeks ago, maybe I was hearing an early sign of a bearing go out.Did GM dealer find what the issue is? does that engine still use a vacuum pump?. sounds external?
Hmmm...thrust bearings don't typically break, per se. They fail due to abnormal wear. They can be subject to excessive loads caused by improper assembly, poor surface finishes, too little or too much clearance causing oil starvation, problems with the transmission or torque converter creating too much forward pressure on the bearing, and even poor engine grounding can cause one to fail.Dealer called, they ordered a new engine. Thrust bearing broke and metal shavings throughout the motor. I’ll talk to GM tomorrow and figure things out, engines are currently backordered. He had no guess on time but said a month was a good guess.
That’s close to what my dad said who has rebuilt his share of motors (poor and mechanically inclined) - he thought it would be caused by oil starvation. Unfortunate event, that’s for sure.Hmmm...thrust bearings don't typically break, per se. They fail due to abnormal wear. They can be subject to excessive loads caused by improper assembly, poor surface finishes, too little or too much clearance causing oil starvation, problems with the transmission or torque converter creating too much forward pressure on the bearing, and even poor engine grounding can cause one to fail.
Probably a 90% chance that replacing the engine will solve the problem permanently but there is still a chance that a problem with the transmission, torque converter or alignment between them will cause another to fail down the road. GM likely has procedures to check for these and rule them out, so hopefully the techs will do the work by the book.