GMC 84691681 Mirror Assembly, O/S Rr View *Chrome M

Some of these models are fitted with a Body Control Module (BCM) that integrates several systems into a central module and can therefore be easily diagnosed with a professional scan tool. The BCM controls door locks and unlock, power windows and the ignition lock and security system, interior lights including the DRL's, horn, wipers, heat/AC, power mirrors etc. If the vehicle does not operate as intended it is advised to seek the help of a dealership service department or a certified auto technician. The electric rear view mirrors use two motors for movement while some are equipped with memory mirrors interlinked with power seat memory and the BCM. Any complications should be solved with help of a professional independent repair facility or local dealer. The switch used for controlling the position of the left or right side mirror is used for passing voltage to it and while ignition is on ACC and the engine not running, the windows should be rolled down and the mirror control switch should be operated through all the positions. The sound of electric motors running in the mirrors must be sought; if motor sound is heard but the mirror glass does not move, then the inner part of the mirror may be spoilt, requiring replacement of the entire mirror. When the mirrors do not work and no noise is produced, the next thing to do is to look for a fuse. If the fuses are all okay, the mirror control switch has to be then disconnected in order to check its continuity at a qualified shop, while the grounds have to be checked. In the case where the mirror is not functioning then the mirror has to be disconnected so as to check for voltage on the wires. Inasmuch as voltage is missing in each switch position, there should be opens and shorts checks in the circuit between the mirror and the control switch. The user can hold the switch and open/closing the door to check whether the contact is lost in any point of the door jamb. If voltage is present, you can test the mirror with jumper wires away from the vehicle but, must refer to various wiring harness diagrams to determine which leads are safe to apply to not damage the mirror drive motors. In the event the mirror does not meet this test, then it should be replaced.

To eliminate external mirrors you begin by having to unfasten the door sill cover. For the mirrors models that have power mirrors, follow the wiring harness to the electrical connector then remove it. Third, take off the three external mirror mounting nuts and unscrew the mirror from the door, and it is critical to hold the mirror because the final nut tends to fall off. Installation is done in a backward order of any removal that has been earlier done. When there is an interior mirror with some electronic pieces, start by pulling off the trim at the interior side of the mirror which is nearer to the window for you to get to the electrical plug. I had to disconnect it first and then unscrew the 'mirror-to-base' set screw to pull the mirror assembly off the base. This process is done in a reverse manner of that followed when installing the operating system from the scratch. If for some reason or the other, the support base is no longer attached to the windshield, it can be easily done so using a mirror adhesive kit which is easily purchased from any automobile store. Wipe the glass and support base down and according to the adhesive manufacturer's instructions; the next day reinsert the mirror.

Power folding