Service VME - Service Four Wheel Steer Message and or LEDs in Mode Switch Will Be Illuminated - kw Quadrasteer light inoperative service NYS code communication module control data diagnostics rear

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

A customer may comment that intermittently a condition occurs where all three LEDs in the mode switch will be illuminated and/or a service four wheel steer message comes on the DIC. There will also be no DTCs set or stored in the Quadrasteer Control Module. Using SI2000 perform a Diagnostic System Check for the Rear Wheel Steering: make sure to check the powers and grounds to the module. If your able to duplicate the condition, you may find no communication with the Quadrasteer Control Module. To repair the vehicle, replace the Quadrasteer Control Module.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

( 02-04 Sierra Denali) and (02-04 Chev Silverado Ext Cab S/B 1500) and (02-04 GMC Sierra Ext Cab S/B 1500) and (03-04 GMC Sierra Crew Cab HD 1500) and (03-04 Chev Silverado Crew Cab HD 1500) and (03-04 GMC Yukon XL 2500 ) and (03-04 Chevrolet Suburban 2500)

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