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For 1990-2009 cars only

Service Tire Monitor System Message, Tire Pressure Warning Light On, Tire Pressure Reading Shown as a Dash in DIC, DTCs Set (Add Shielding Foil Tape to Remote Control Door Lock Receiver Wire Harness)

Subject:Service Tire Monitor System Message Displayed, Tire Pressure Warning Light On, Tire Pressure Reading Displayed as a Dash in DIC, DTCs C0750, C0755, C0760, C0765 Set (Add Shielding Foil Tape to Remote Control Door Lock Receiver (RCDLR) Wire Harness)

Models:2008 Cadillac CTS (Excluding Vehicles with RPO UHA)
Built Between VIN Breakpoints 80136490 and 80141498



Condition

Some customers may comment on a Service Tire Monitor System message displayed in the DIC and Tire Pressure Warning Light being illuminated. When the customer uses the DIC to view the tire pressure readings, dashes are displayed.

A scan tool may reveal one or more of the following DTCs set:

    • C0750
    • C0755
    • C0760
    • C0765

Cause

This condition may be caused by radio frequency interference (RFI) because some vehicles were produced with a section of the remote control door lock receiver (RCDLR) wire harness missing the foil wrap shielding tape.

Correction

Remove the rear window (shelf) trim panel following the procedure in SI. Inspect for the presence of foil wrap on the RCDLR harness from the connector to where it branches out of main body harness (approximately 150 mm (6 in) length). If the foil wrap is missing, add shielding 3M™ Aluminum Foil Tape 425, or equivalent, to the harness. Wrap completely around the harness from the branch to the connector. To verify the repair, the vehicle must be driven for at least 20 minutes to allow for TPM diagnostic cycle.


Object Number: 2048247  Size: SH
(1)Remote Control Door Lock Receiver (RCDLR)
(2)Harness with Foil Wrap Shielding Tape

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

R9743*

Add Shielding Foil Wrap Tape to RCDLR Harness to Address RFI Issue

1.0 hr**

* This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.

**Includes drive time.