Cooling System - `Low Coolant Level' Message Displayed

File In Section: 06 - Engine/Propulsion System

Bulletin No.: 02-06-123-001

Date: March, 2002

TECHNICAL

Subject:
"Check Coolant Level" Message Appears on Driver Information Center (DIC) and/or Reduced Heating Performance (Add Engine Coolant)

Models:
2001-2002 Cadillac DeVille Built Prior To VIN Breakpoint 2U159731

Condition

Some customers may comment on the following conditions:

^ Illumination of the "Check Coolant Level" message on the DIC during a cold start.

^ Reduced HVAC performance (the heater is not providing enough heat).

Cause

This condition may be due to an underfill condition of the engine coolant during the vehicle assembly process.

Correction

Caution:
Do not remove the coolant recovery reservoir (surge tank) cap while the cooling system is hot. Serious personal injury may result. Only remove the cap from a cool engine.

1. If the vehicle cooling system is NOT leaking and the coolant level is NOT at the proper level:

^ Fill the surge tank with a 50/50 mixture of DEX-COOL(TM) coolant and clean drinkable or distilled water until the coolant level is 6.4 cm (2.5 in) below the base of the surge tank till neck.

^ Refer to Engine Coolant in the Service and Appearance Care section of the Owner's Manual.

2. If the vehicle cooling system coolant level is leaking, perform the standard diagnostic procedures in the Service Manual.

Warranty Information





For vehicles repaired under warranty, use the table.





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