Glow plug control module source

[rapidoxidationman]

For an LLY (2005)...

My CEL came on a couple of days ago: P0670 is the only code present. There's power to the glow control module from the battery (the single thick wire going to the module) and the plugs all seem good as tested from the wiring harness pins 1-4 and 7-10 at the module (ranges from 1.2 to 3.4 ohms; number 5 is the high one IIRC). Good ground on pin 11. Truck still starts with a couple extra seconds of cranking (35 degrees outside), but winter will eventually come around here again.

NAPA wants $206 for a new module. Anybody got a better source? I haven't priced it from GMPartsDirect, but nor can I find the OEM part number to plug into the website.

Kennedy, do you have this available? Couldn't find it on your website either.

Thanks in advance...

Edit: Found what I believe to be the proper GM p/n: 97379635
ebay has it for about $110, gmpartsdirect is about $95... I'd be ok with getting it from a known good source...