For 1990-2009 cars

# Information Required Before Ordering A New OnStar VCIM For A DTC B1000 - keywords blue button communication message no noconnect operation

Subject: | Information required before ordering a new OnStar® VCIM for a DTC B1000

Models: | 2002 through 2009 OnStar® equipped vehicles

This PI was superseded to update model years and text. Please discard PIC4600.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

Before ordering a VCIM for a DTC B1000, GMTAC has been requested to document specific information about the DTC. Dealer technicians will find most of this information using the TECH2.

### Recommendation/Instructions:

GM TAC will need to verify the original customer concern that led to the discovery of the DTC B1000 with the technician. Some of the questions GM TAC may ask are "What happens when an OnStar® key press is made?", "Does the system connect on a key press?", "Does OnStar® have a current GPS location on a key press?"

On GM LAN vehicles the sub code must be recorded. example B1000 SYM00

If available on the TECH2 for the vehicle, technicians should select the following menu and record the data from the VCIM:

(Will not be available on the Chevrolet Colorado and Trailblazer; GMC Canyon and Envoy, Hummer H3)

Body/Vehicle Communications Interface Module/Special Functions/ B1000 Data

DPID 11 Byte1:

DPID 11 Byte2:

DPID 11 Byte3:

Dealers should also review service bulletin 03-08-46-004D and record all relevant module information to expedite the order process.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.