theres no dealer bs for the ebcm, its mounted on the abs pump next to the master cylinder. snag a jy one swap it in there.
or take yours off and send it out for repair or try to repair it your self if you ok with soldering a board some. seen a vid on how to fix the one in my tahoe, looks easy enough.
you can take it off and still drive the car too.
heres a how to, a 05 should be about the same looking.
How To (Un)Install EBCM