2005 Silverado 1500 LS Crew Cab

[Coons_age73]

OnStar module location?

Looked behind glove box, there is a silver box but with only one connector that wouldn't fit into the Bluestar module. Found a silver box under the steering wheel with J1 through J4 labeled on it, however it looks as if the plugs are different and there are 4 of them.

Any ideas?