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2009 Cadillac STS = After 5 minutes of driving the power steering stops. If engine is then shut off & restarted power steering resumes briefly. GM Dealer ran a scan but nothing turned-up. This first started 2 weeks ago and has happened about 12 times, with the intervals between loss of power steering becoming shorter. Any suggestions?

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Replace the power steering pump & electrical motor. If the GM dealer scanned the steering system ECU (Electronic Control Unit) and nothing turned-up, then the steering pump electrical motor overheats and stopped. After engine shut off & restart, the power steering ECU have been reseted, and power steering electrical motor runs all right.

Posted on Apr 07, 2011

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