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Power steering control module failure

8643 Views 7 Replies 5 Participants Last post by  goldrivertom
I have seen similar threads on this topic, but am having trouble believing my dealership's diagnosis. While driving my 2011 Volt home recently on a two lane highway, my power steering went out and I got the "Service Power Steering" message on the dash. While difficult to steer, I continued home (about 15 miles). I charged the car overnight and called the dealer in the morning. When I drove to the dealer, the steering worked fine, but I still wanted the dealer to check things out.

After several days of trying to diagnose the problem, they determined the steering gear mechanism was not getting power due to an intermittent failure in the control module. Their plan is to replace the control module.

When I mentioned there was a bulletin extending the warranty on the power steering to 10 years, their response was that was for the gear/motor mechanism, not for the control module. So whenever they get this done, I will be paying the full amount. Seems to me, and from what I've read on this forum, the mechanical and electrical pieces are interrelated, and all of it should be covered by the 10 year warranty.

Is the dealer correct? Or should I push back?
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Thanks for all the responses. I may have gone over rumble strips before the steering went out, but am not sure. I know I definitely did after the steering went out, since it was difficult to stay on the road. Sounds like I probably could have passed on letting the dealer replace the module, but we'll see what happens.
Just to follow up and close this thread out, after the dealer had my Volt for 4 weeks, they ended up replacing all of the power steering components, and charged me nothing. First they tried to replace only the control module, but then could not get it to work with the original mechanical components. The good news was that I had a 2017 Volt loaner for 2 of the 4 weeks - liked it a lot, but I think I'll stick with my 2011 Volt for now.
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