GM Service Manual Online
For 1990-2009 cars only

No Communication with the Steering Column Lock Module - keywords body class communication column crank data diagnosis DTC information inoperative IPC no powertrain SCLM start tech2

Subject:No Communication with the Steering Column Lock Module

Models:2004-2007 Cadillac XLR
2005-2007 Chevrolet Corvette



This PI has been revised to add extra model and additional years. Please discard PIC3041.


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

Condition/Concern:

When performing diagnosis using the Tech 2 on the vehicles listed above, you may notice that the Steering Column Lock Module (SCLM) may show no communication. The SCLM is only equipped on Export vehicles and the 2005 Chevrolet Corvette with a manual transmission.

Recommendation/Instructions:

It is normal for the SCLM to show no communication on vehicles not equipped with Steering Column Lock.

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.