High, Low or Erratic Oil Pressure Gauge Reading Setting DTCs P0522 and/or P0523
| Subject: | High, Low or Erratic Oil Pressure Gauge Reading Setting DTCs P0522 and/or P0523 |
| Models: | 2004 Chevrolet Avalanche, Express, Silverado, Tahoe, Suburban |
| 2004 GMC Savana, Sierra, Yukon, Yukon XL |
| 2004 Isuzu W4 |
| 2004 HUMMER H2 |
| with 6.0L Engine ONLY (VIN Code U -- RPO LQ4) |
This bulletin is being revised to close the engineering investigation (EI #04073) and communicate possible root cause information. Please discard Corporate Bulletin Number 04-06-04-065 (Section 06 -- Engine/Propulsion System).
Condition
Some customers may comment on a high, low or erratic oil pressure gauge reading and the engine oil pressure indicator being illuminated. The technician may find DTCs P0522 and/or P0523 stored in the PCM. The PCM displays this information in the "Failure Records" on the scan tool.
Cause
GM Engineering has determined the DTC's or high/low/erratic gauge reading may be caused by an intermittent connection at the oil pressure sensor connector.
Correction
Inspect the oil pressure sensor connector for corrosion or insufficient pin tension by performing a pin drag test. Replace if necessary. If the customer's concern is still present, follow the diagnostic procedures for P0522 and/or P0523 found in SI.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
N2220 | Switch-Oil Pressure Sender - Replace | Use published labor operation time |
