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November 1, 2017 Service bulletin

Malfunction Indicator Lamp (MIL) Illuminated

GMC technical service bulletin 17-NA-292 for 2017-2018 GMC Acadia, 2017-2018 Chevrolet Colorado and 2017-2018 Cadillac CTS and others.

Bulletin number
17-NA-292
Component
Electrical system: wiring: relays/solenoids
Summary
Malfunction Indicator Lamp (MIL) Illuminated - DTC P3409 and/or P3433 Condition Some customers may comment that the MIL is illuminated. The technician may find one or more of the following DTCs set: • P3409 • P3433 Cause This condition may be caused by a wiring issue with both/either the cylinder 2 deactivation solenoid oil control valve circuit and/or the cylinder 5 deactivation solenoid oil control valve circuit. These codes may be active or stored in history. • This may also be a repeat concern. Correction Note: When replacing the solenoids, ensure there are no terminal issues at the connector. To correct this condition, refer to the information below: • If vehicle was built between 4/13/2017 and 8/7/2017, it will be necessary to replace both right and left bank Cylinder Deactivation Solenoids (AFM OCV). • If vehicle was built outside the date range, check for any terminal issues at the connector. If no trouble found, follow SI diagnostics for the applicable DTC.

Owners of these vehicles have filed 469 complaints in the electrical category.

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