There may be several inoperative electrical features on some 2019-2025 Blazers. (Fig. 4) These conditions may include inoperative door chimes and door lamps, inoperative power mirrors or a distorted driver-side mirror, and the radio may stay on when a door is opened.
Fig. 4
If any of these conditions are present, check for possible water intrusion into connector X500 (front driver’s door wiring harness) (Fig. 5) or X600 (front passenger’s door wiring harness). (Fig. 6) There may be water leaking past the A-pillar body plug.
Fig. 5
Fig. 6
Any corrosion in a connector should be repaired and, if necessary, replace any damaged terminals with terminated leads. Refer to Wire and Connector Repair in the appropriate Service Information.
To prevent future water intrusion, install a new body plug and apply a sealant.
Refer to #PIT6354 for additional information.
– Thanks to Dave Goodrow
