GM Service Manual Online
For 1990-2009 cars only

SIR Inflator Module Coil Caution for GMC Truck TopKick C-Series (Crew) C6/C7/C8 2003

Caution: Improper routing of the wire harness assembly may damage the inflatable restraint steering wheel module coil. This may result in a malfunction of the coil, which may cause personal injury.