Review on 🔌 Black Multi-Purpose Relay - ACDelco GM Original Equipment D1780C by Mike Vargas

Simple solution to intermittent failure to unlock the doors and tailgate on the second row of a 2003 Suburban. Denso brand, made in Japan Relays packaged in ACDelco bags (see image); ACD PN: D1780C and GM PN: 19116058. The original relay in the car was a Delphi 8867 (complete PN: 15328867) which lasted about 16 years and started to trip as the ambient temperature rose. Then, when everything was cool in the morning, the doors opened. After driving for some time through 90 degrees of heat, the doors could no longer be opened. You could hear the actuators in the door clicking and the relay clicking, but not going through enough for the actuators to fully pull the release lever. The new relay solved the problem.