After the original recall on the column lock I believe a second recall came out that was only for those cars that had completed the first one. The dealer here ended up replacing the wiring for my CL, at no cost to me. Low voltage from a weak battery can cause problems, so be sure to check that out.

If you can't get satisfaction localy then move up to the company level and talk with a GM service rep.

I'm sure others here can give you more specifics. Good luck and keep us posted. cheers
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Dan