Tahoe lift gate

SOURCE: 2006 chevy tahoe liftgate won't open when keyless remote unlocks

check fuse first always, then check connections fron rear gate to body.

SOURCE: 2005 Honda Odyssey Tailgate Problem

Try to reset the tailgate by removing the no.7 (7.5 amp) fuse in the underdash fuse box. Open and close the tailgate manually, reinstall the fuse, and try the open tailgate button. If that doesn't work you would have take it to the dealer, where they can check for DTC's (diagnostic trouble codes). Honda Al

SOURCE: 1996 Isuzu Rodeo stuck tail gate

Remove the interior trim panel which will not be easy since the gate is up ---- you can then access the lock mechanism and will probably find a bent linkage rod or a broken plastic retainer clip.

SOURCE: rear tail gate will not open

how to i open a stuck lift garte on a ford winstar 2000 lock broken too

SOURCE: 2004 GMC Envoy XUV SLT

There is a technical service bulletin regarding this problem with 2004 GMC envoy. Actually there are 3 separate issues with regards to the elecronic tailgate. The reason why the dealers are backordered is the part you want keeps failing after a time of being installed.

For the particular problem you have of the electronic latch not working, the bulletin recommends a inspection of the endgate connector C900. Look for the wires to be backed out of the connector or not properly crimped. To crimp you will need a crimping tool available at any electrical supply shop. The connectors can be had from the dealers.

The other solution referred to intermittent operation of the endgate but can apply in your situation also. For that, look for chaffing at the wire harness connectors for the endgate actuators located at the upper right and lower left latches. They have been found to be pinched up to 8 inches away from the actuators. In this situation it would be ideal to replace the connectors and install in a way so wires will not be pinched.

The other thing to look out for is dusty sensors. For this you will need to remove the tailgate trim panel and locate the 2 optical sensors on either side. You can feel them with your hand, they will be the size of a nickel. Clean all the dust under the trim. In addition to that you should open the switch and use contact cleaner to clean out any dust or debris inside there. There is no mechanical way to open the door once the electronic side has malfunctioned without damaging the door. I hope this helps.