Oil Leak at Oil Pressure Switch (Apply Sealant)
| Subject: | Oil Leak at Oil Pressure Switch (Apply Sealant) |
| Models: | 2002 Chevrolet TrailBlazer |
| 2002 GMC Envoy |
| 2002 Oldsmobile Bravada |
| with 4.2L Engine (VIN S -- RPO LL8) |
Condition
Some customers may comment about oil spots on the driveway or an apparent oil leak. Upon investigation, the technician may find that the leak is coming from the area of the oil pressure switch.
Cause
The cause of this condition may be due to an incorrect type or application of sealant.
Correction
Remove and re-install sensor with new thread sealant. When re-installing an existing sensor or installing a new replacement sensor, the technician should be sure that the threads are clean and dry. Apply sealant to the threads in the following manner:
| • | Apply a consistent coating across at least three full threads. |
| • | Do not apply any sealant to the first full thread. |
| • | Do not apply any sealant in the area of the O-ring seal. |
Notice: Failure to properly apply thread sealant may lead to repeat leaks or the failure of the oil pressure switch.
Parts Information
Part Number | Description | Qty |
|---|---|---|
12345382 (Canadian P/N 10953489) | Thread Sealant - Loctite STS GM6124M | 1 |
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
N2220 | Switch - Replace, Engine Oil Pressure Switch | 0.4 hr |
