2008 chevy hhr key and remote will not unlock car doors

SOURCE: Remote Door Lock/Unlock will not work.

At first look, I would have guessed that your battery in the door opener was dead, but that is not the case. I suggest driving to a nearby Chevy dealer and ask one of the salesman if he/she can help. They have always been helpful to me. If not try another one as they are in business to sell not only cars, but service also. They will be your best bet to fixing it. :D

SOURCE: How do I open the gas tank door on the Chevy HHR...

There is no inside release on the HHR. Simply press in on the rear of the gas fill door and it will "pop" open. Make sure you press it in again when you close it...

SOURCE: hatch-back door will not open

I can say I have had the same problem, only the back doors and the rear hatch/glass won't open using keyless remote from them freezing this Winter.  The front two driver/passenger doors will unlock with keyless remote but none of the rear doors, hatch or glass.  Since I had to replace the stoplight bulbs in the rear with one not working and I don't need a ticket on Memorial Day weekend (need to replace 2 at the same time is wise according to any good mechanic), I had to get the rear hatch open to get to the lamp assembly and replace the bulbs.  My thinking was that since my two front locks were opening but no others and my keyless remotes are working, it has to be a fuse or relay that is not working!  So, I talked with a NAPA rep and he said the "Day running lights" relay can be a temporary fix to get the rear locks open to replace the bulbs.  I looked up in the owners manual where both relay's are located and removed the "Locked" relay and "Day running lights" relay and put the "Day running lights" into the same slot where the "Locked" relay was not operating and it worked!  I got the doors unlocked and replaced my stoplight bubs replaced.  Now, I have a new problem, my Tahoe won't start!!  I'm assuming the relay wasn't supposed to stay in the wrong slot when operating the vehicle because I started the truck, and it started and died-started and died-same and again.  I think the wrong fuse can be used to fix another problem like a fuse.  But, a fuse you can leave in and deal with one operation in the vehicle not working until you can replace the fuse later when you purchase it.  But, not a relay!  Now, I think the confused electronics cause another component (possibly the fuel pump relay) to burn out with the wrong relay in place of another when the vehicle operates.  I should have known but I was so glad to get the doors open after two months and it being Memorial Day weekend.  Now I have to find out what else is wrong so don't make that mistake to avoid the same predicament.  Better to get the relay ordered and replaced than to have this happen to you. 

SOURCE: CAR BATTERY FOR CHEVY 2007 HHR

Your battery is located in the rear under your cargo floor. Where most cars would hide a compact spare.

SOURCE: 2008 chevy malibu. how to program keyless entry remote

You must take it to the Chevy dealer.

Testimonial: "thank you"