06 hhr hatch won't open. with key fob or by pushing membrane outside hatch..no emergency button inside panel to open hatch, how can i get it open??

You can get it open in two ways: By using your key fob and remotely opening latch or by pulling inside panel on rear hatch and manually pulling lever to get latch to release. Most times when you cant get rear hatch to open normally is because cable from outside release handle to latch broke. Have cable and release mechanism inspected and replace worn or broken parts as needed.

The release contact switch must be dirty and corroded...you will have to jiggle the rear hatch...when trying to open again...when open spray the hold down bracket, and the under side of the hatch that makes contact...the best spray for this is PB Blaster, available at Walmart auto parts section...this will not hurt the electric contacts...as you still cannot open the rear hatch, you will need to remove the inside panel of the rear hatch to expose the release arm on the inside of the hatch. Hope this helps.

see if there is an djustment on the striker plate it may be out of adjustment

remove the rear seat ; if needed; crawl to the back of the hatch and release the hatch lock from inside using a blade screwdriver or, have a locksmith at the dealer make a new key by code using your vin number

What kind of vehicle is it?

It's a common problem. The electronic release mechanism for the trunk breaks and has to be replaced. Until you replace it you will have to use the manual pull.

Inside the rear tail gate hatch should be a small access panel. Remove the access panel so you can manually open the rear hatch by grabbing the small metal rod linkage. They put this access panel so if the door motor actuator goes bad you can still open the rear hatch. After you open the rear hatch manually by the linkage rod. Remove the entire inside hatch trim panel so you can see all the inner workings of it and self diagnos. It sound like the electric door motor actuator has gone bad. This is pretty common for any GM product. Hope this hopes.

remove grille and move latch to open hood-boost battery and use key fob to enter or have locksmith or service station use a slim jim or other type of device to unlock door

Lower the back seat and crawl into the trunk and see what the latch is doing when you activate the key fob. the trunk lid will have to be open to enable any repairs. Also an emergency release cable is probably visible (yellow handle) inside the trunk and will Open the trunk lid.

No easy way to do this - you need to remove the inside door panel from inside the truck and manually release the lock. You didn't say where the wiring was burnt, but when the door is open test for power at the lock solenoid - if not there when unlock is pressed, inspect the wiring (particularly at the two rubber wire casings connecting the door to the frame). If it is there, the lock solenoid is stuck and may have to be replaced.