This morning I went out in the Tahoe, the rear window was filthy after the Texas snow and freeze fest this week. I tried to spray it but nothing came out. Once I got home, I tried again and found it to be leaking behind the driver side front tire. I opened the hood and found that the hose and coupler were disconnected next to the spare battery mount. I reconnected, tried again, still nothing. This time the leak was behind the rear tire. I looked underneath and sure enough, the coupler and hose were disconnected here as well. I reconnected, tried again, still nothing. After trying a few times my wife saw the washer fluid dripping inside, behind the third row. The washer fluid flooded the rear header trim piece and now I’m unsure of the next step. I’m sure there is another coupler somewhere but where? Inside the vehicle? Also, how do I remove and clean out the rear header trim piece now?