Code : P1662
Make : GMC
Description : P1662 GMC Cruise Control Inhibit Control Circuit Conditions
Possible causes :
– Check Servo Motor Cruise Control (SMCC) module ignition feed fuse
– Faulty Servo Motor Cruise Control (SMCC) module
– Servo Motor Cruise Control (SMCC) module harness is open or shorted
– Servo Motor Cruise Control (SMCC) module circuit poor electrical conne
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
