[rs6655]

I'm pretty sure my 10/08 build didn't either even though the book says it was supposed to. It also said I was supposed to have a glove box flashlight but that was not there either.

I stand corrected. My 8/2008 build did come prewired for the alarm. I was looking on the firewall but should have been looking inside the cabin air filter plenum (have to remove the cabin air filter). The mounting holes and wiring harness on page 4 were clearly visible.