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Service Engine Soon/Check Engine Light and/or Anti-Lock Brake System (ABS) Warning Light Illuminated, Erratic Speedometer and/or Erratic Shifting, Multiple DTCs Set (Reposition Surge Tank Hose Clamp)

Subject:Service Engine Soon/Check Engine Light and/or Anti-Lock Brake System (ABS) Warning Light Illuminated, Erratic Speedometer and/or Erratic Shifting, Multiple DTCs Set (Reposition Surge Tank Hose Clamp and Repair Wires)

Models:2003 Cadillac DeVille



Condition

Some customers may comment on any one or more of the following conditions:

    • Service Engine Soon (U.S.) light illuminated
    • Check Engine Soon (Canada) light illuminated
    • Anti-Lock Brake (ABS) light illuminated
    • Erratic speedometer readings
    • Erratic shifting

Technicians may find multiple DTCs set including but not limited to:

    • P0340
    • P0341
    • P0410
    • P0502
    • P0503

Object Number: 1233109  Size: MF

Cause

This condition may be due to the metal tabs on the radiator surge tank outlet hose clamp rubbing against the engine wiring harness, creating a hole in the plastic wire conduit and damaging the wires inside.

Correction

Reposition the hose clamp and repair wires.

  1. At the front of the RH Cam Shaft Cover (rear valve cover) and just above the cam position sensor, locate the metal clamp on the radiator surge tank outlet hose.

  2. Object Number: 1233115  Size: SH
  3. Rotate the hose clamp until the tabs point up.
  4. Repair the damaged wires. Refer to Wiring Repairs in the Wiring Systems sub-section of the Service Manual.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

N6610

Engine Wiring and/or Connector-Repair

Use Published Labor Operation Time