My remote key fob and the button on the dash, no longer open the back tailgate / liftgate on my 1999 Chevy Suburban. I'm guessing a fuse is blown, but I don't have an Owners Manual to look it up. Can anyone help me resolve this?

bought it like this.
so fob buttons work, but not hatch.
but lock inside locks fail (elect. buttons)
driver and shotguns side both fail, lock sw?
ext, mirrors dead.
door looks in the service manual has 5 pages of schematics, is well advised to read that first
not scanning the PCM/BCM first is never good.
oK if the speed sensor on the car fails, doors will act up. (for sure if it see car moving and is not)
the radio receiver (fob) works mostly
Fuse MIR /LKS must not be blown door buttons fail
why not check all fuses, save work and not need books to fix it if a fuse blew.?(underhood box)
IP fuse PWR/LKS not blown
the BCM runs the 3 Door lock relays
possibles
Fuse MIR /LKS blown 3amps
this kill local door power to LF and RF door swithes dead. and Rear glass to. the relay board does not fail with fobs. is the key fact.
your post is not clear on all for doors.
or LF an RF door switches. but assumed both are dead, me.
so it is just blown fuse.
we always check fuse first. a 20 cent part.

Liftgate control moduel uses sensor inputs to control the it , maybe one of these sensors is bad . Having a qualified repair shop hook up a professional type scan tool an check for DTC'S - diagnostic trouble codes in the lift gate control module would be the first place to start

Sounds like the switch is bad. That would be a good place to start.

check if the cable running towards is is still ok and in the right position

check wiring fuse and pos relay from dash switch

http://www.chefseattle.com/blog/site-news/suburban-rear-liftgate-wont-unlock-how-to-fix/

I fixed my 2005 from info at following site http://www.chefseattle.com/blog/site-news/suburban-rear-liftgate-wont-unlock-how-to-fix/
It may help you too.

Try changing the liftgate latch. If you have power liftgate, that is the usual fault by experience. There is also possibility for the other associated components to fail, but they are more costly. You can go for these repair while the gate is not yet stuck closed, so you can easily remove the trim panel. However, I still suggest a preliminary check up on the circuits. The fuses, switches, modules, codes, etc. If the liftgate seems to be operational, except for the proper closing and initial opening, its most likely the latch. I just hope we get lucky on that. Okay, there? goodluck. : )

Sounds like you have a wiring problem to your liftgate. Check the wires where they come out of the body, and go into the liftgate. If they are good, check fuses, or possibly a module.

To re programme your key if your fob has three buttons is as follows. Turn the ignition key in quick succession from off to ignition on 4 times. You should hear a chime to indicate programme mode. Quickly remove the key and press the lock button followed by the unlock button. Wait until you hear the chime again and see if the fob works. If it does not operate the central locking, see if you can open the tailgate with the fob, I guess you have a three button remote? If it doesn't, repeat the above but quicker!! it should programme quite easily. When you checked the fuse, did you take it out? I suggest you remove the fuse and wait 30 seconds and put back in, get someone in the car to see if any doors respond to you replaceing the fuse. recheck the fob operation and the key, this maybe the answer.