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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by westcoastchick:
Can someone reccommend an alarm for extra protection? Or is it not worh it? I had my tow hitch stolen, albiet it was plastic from the dealer and I realize I need a locking hitch. I have heard that installing alarm systems after market can potentially cause damage, wiring, ruining warranty, etc. Anyone have any input or or source in northern California? TIA. </div></BLOCKQUOTE>

Any aftermarket item, installed incorrectly, can cause problems. If you get one, just make sure the installer is reputable, and will stand behind the product. If installed correctly, there is no problem with warranty. If they fry the BCM when installing; naturally, GM will not cover it under warranty.