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2007 Chevy Silverado 4x4 V8 5.3L with P0522, P3401, P3425, P3441, and P3449 Codes - Diagnosis and Repair Guidance

Model: 2007 Chevy Silverado 4x4 V-8 5.3L Fault Code: P0522 Posted: 2018-06-23 19:17

I'm seeking expert advice to identify the root causes of multiple diagnostic trouble codes appearing on my 2007 Chevy Silverado 4x4 V8 5.3L engine: P0522 (engine oil pressure sensor circuit low voltage), P3401 (cylinder 1 deactivation solenoid valve control circuit), P3425 (cylinder 4), P3441 (cylinder 6), and P3449 (cylinder 7). All of these codes relate to deactivation solenoid valve control circuits, though they do not specify whether the issue is low or high voltage, open or closed. The vehicle starts but runs with a rough idle, struggles to accelerate, and only reaches about 35 mph—no attempts have been made to exceed this speed. I plan to inspect wiring connections, spark plugs, and physically remove the oil pressure sensor for visual inspection. Any insights into potential causes would be greatly appreciated.

Related fault codes
P0522P3401P3441P3449
Comments (4)
Anonymous 2018-06-23 19:37

Have any repairs or modifications been performed recently? Also, please check fuse 4 (ENG) as it may be related to the solenoid circuit power supply.

Anonymous 2018-06-23 20:53

No recent work has been done on the vehicle. All fuses have been tested and are functioning properly. Thank you for the suggestion.

Anonymous 2018-06-23 21:22

A voltage (VLOM) issue is possible if wiring integrity is intact. While checking solenoid resistance could help, the fact that multiple cylinders show similar deactivation solenoid faults suggests a shared power or ground problem, or a failure in the VLOM assembly itself. Reference: https://www.gm-trucks.com/forums/topic/...vlom-problem/

Anonymous 2018-06-24 00:26

Thanks for the input. I believe I've identified the issue—either a squirrel or mouse chewed through the wiring at the base of the engine oil pressure sensor clip. I'm now planning to splice and repair the connection to see if this resolves the codes. Appreciate your recommendations.