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Disintegrated Oil Pump

13084 Views 51 Replies 23 Participants Last post by  bart_dood
The oil pump in my 2012 Volt disintegrated suddenly without any prior warning just one month out of power train warranty.

GM is not helping me to fix this because I bought the car pre-owned (so, no Good Will warranty even though I have maintained the car as recommended and the prior owner's maintenance records are in the glove box. I spoke with GM customer service and the Electric Vehicle team and all said the same as the dealer service manager: I am out of luck as per GM policy).

So, I spent $2500 to have the oil pump replaced (at a Chevy dealer) and the car ran fine for about a week. Now it's making a tapping/clicking noise and the Knock Sensor error (P0324) has triggered the CEL.

Anyone else have an oil pump disintegrate? I am planning to file a report with the NHTSA so that there is some oversight. But, I am curious if there are any other cases of oil pumps disintegrating like the one in my car did.

Thoughts on what the tapping might be now? It is full of oil and the oil is clean.

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We ran it with the broken pump just long enough for my wife and daughter to get safely off the highway and for me to drive it less than 1/2 mile to the dealer while investigating to see what it was actually doing -- this was about the least we could have done.
When the oil pump was repaired I discussed the possibility of engine damage with the service manager. It was his opinion after having his technician open the engine and inspect it, that replacing the oil pump would be all that it needed. I trusted his professional opinion and had the pump replaced. Now, less than 1 week later, there's tapping in the top... go figure!

It's out of warranty because the service start date is 11/11 (it's a 2012). Even though it still has miles to go, the warranty expired 11/16 -- 5 years/100k miles on the "power train" (which apparently is what covers the engine). The oil pump disintegrated 12/16.

Your frustration is completely understandable, gunner76. If you are interested, I'd like to reach out to your dealership to help get you scheduled for a new service appointment and assist throughout the diagnostic/repair process.

I know that service costs were a concern with your previous visit. While I can't guarantee any specific outcome in regards to cost assistance for repair fees, I can definitely see what options may be available!

If this is something I can assist you with, please send me a private message with your VIN, contact information, vehicle mileage and dealership name.


Amber G.
Chevrolet Customer Care
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