For 1990-2009 cars

# Coolant Loss, Low Coolant Light On, Engine Overheating (Reseal Oil Cooler Cover with Sealant)

Subject: | Coolant Loss, Low Coolant Light On, Engine Overheating (Re-seal Oil Cooler Cover with Sealant)

Models: | 1997-2001 Cadillac Catera

| with 3.0 L Engine (VIN R -- RPO L81)

### Condition

Some owners may comment on a loss of coolant, low coolant light on, and/or engine overheating.

### Cause

Condition may be caused by an oil cooler cover leak due to an adhesion condition between the oil cooler cover and the engine block.

### Correction

Thoroughly clean the engine block and oil cooler cover and reseal with sealant using the following procedure.

1. Remove the oil cooler cover from the engine. Refer to Oil Cooler Replacement in the Engine Mechanical section of the Service Manual.
2. Remove the old sealant from the engine block and the oil cooler cover. Use only a plastic or metal scraper as described in Corporate Service Bulletin Number 00-06-01-012.
3. Clean the engine block and oil cooler cover mating surfaces using a solvent that leaves no residue, such as P/N 12346139 (in Canada, use P/N 10953463), or equivalent.
4. Apply a continuous 2 mm (0.08 in) bead of sealant, P/N 12378521 (in Canada, use P/N 88901148), in the in the groove around the engine oil cooler cover.
5. Install the oil cooler cover to the engine. Refer to Oil Cooler Replacement in the Engine Mechanical section of the Service Manual.

### Parts Information

Part Number | Description | Qty
--- | --- | ---
12346139 (In Canada, use 10953463 | Cleaner | 1
12378521 (In Canada, use 88901148) | Sealant | 1

Parts are currently available from GMSPO.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
J3126 | Oil Cooler Cover Replace | Use Published Labor Time