Try taking the interior handle off. The is a screw located underneath the actual handle, gently pull the casing back to reveal the inside of the handle. There should be an L shaped rod with a plastic holder on it. If the holder is off, you just need to swing it back so that it locks onto the L-latch. If it is not present, you may be able to find it at your local parts store or a junk yard. Good luck
http://en.allexperts.com/q/Chevrolet-Repair-808/99-Suburban-Interior-Door.htm
Pull the inner panel and actuate the latch manually.
try pulling on the handle while using a screw driver to actuate it.
The latch is under the front of the hood. The release handle is at the left side of the interior near the driver's door.
pull the door handle on the outside and open the latch by hand both at the same time
latch broke- http://www.dubdiy.net/interior/bb.html == == get creative, maybe remove door from where it is mounted by the hinges..? good luck :)
The door handle/latch assembly is a single piece that is riveted to the door. I needed to replace mine because the springs that place tension on the door handle had snapped. I removed the interior door elements using a flat bladed plastic rivet popper. There are also various screws that attach the armrest and window controls, however, it is fairly straightforward. Once the interior door components are removed, you will have partial access through the metal door to the handle/latch assembly. I purchased a new handle/latch assembly from Ford for about $30. I carefully drilled the old rivets out from the exterior and disconnected the metal rod that controls the latch on the door edge. You will be able to remove the assembly at this point. Since I did not have comparable rivets to re-attach the new assembly, I found short pan head bolts with lock washers at the hardware store. The bolts are flush from the exterior and are visually hidden by the handle. Re-assemble in reverse. Repair is over 1 year old with no reported problems. I have photos of the handle/latch assembly from inside the door if you need further info.
The only way to open a completely inoperable latch is to remove the handles and interior panel to access the latch directly. If the lock is disengaged, sometimes a "burglar bar" can reach the latching mechanism from the window well. But normally an undamaged interior handle would be directly connected.
Replace the door latch.
install a new latch
The problem is a small broken spring inside the door latch assembly. With the broken spring, the door latch will intermittently fail to unlock. Unfortunately, the door latch assembly isn't made to be serviced, even though it's probably a 70 cent spring that fails. This is a terrible failure mode since even unlocking the door manually doesn't work. The worst case scenario (like mine) is that the door cannot open at all. The exterior handle has no tension, the interior handle doesn't move, and the lock never unlocks. Don't try to force the interior handle, you'll break it off and cause yourself even more problems. After trying to get the door to unlock repeatedly, it finally unlocked for me. Once the door is open, you need to take the interior door panel off the door and go to work taking the wiring connectors apart. Fortunately, the window track that's in the way comes out after removing one bolt. It's a bit of work to get all of the linkages and rods for the locking mechanisms and the interior door handle apart. After that, you need to get the door latch solenoid out from behind the bracket that holds it. At this point, you should be able to get the latch assembly out.
How do you put the interior hood latch back on a 2005 Pontiac G6 mine fell off.