Suburban 1/2 Ton 2WD V8-5.3L VIN T (2004)
6.
See wiring diagram shown above for details.
5.
Replace the OnStar(R) Vehicle Communication Interface Module (VCIM) in the vehicle with the provided Digitally-Capable VCIM.
Refer to the Communication Interface Module Replacement procedure in the Cellular Communication section of SI. This kit may include a new
VCIM bracket. If it does, use this new bracket on the vehicle and discard the original bracket. The kit may also include a small wiring jumper
cable. If it does, plug the wiring jumper cable into the connector on the VCIM and the other end to the corresponding vehicle wiring harness
connector.
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For 2001, 2002 and 2003 Chevrolet Impala and Monte Carlo, do not reinstall the black plastic OnStar(R) module cover onto the vehicle after
the VCIM and module bracket have been installed. This black plastic cover will no longer fit on the vehicle.
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The upgrade kit for 2002 Sevilles and DeVilles, and some 2003 Sevilles and DeVilles, will contain a large bracket. To install the new VCIM
into this bracket you'll need to carefully line up the notch in the VCIM with the tab in the bracket.
