Hello, 2008 hhr, battery went dead,replaced, went dead again over night, re-charged and now i have no power at all, chacked all fuses and they are good ?

well the battery is now dead (or only discharged !)
cause #1 ALT/Gen replaces WRONG, see here 10,000 times. more www.

driving a car the ALTERNATOR produces all Electrical power.
100amps x 13v is 1300watts, and runs ALL>
when it dies the battery is sucked dry/dead/ discharged.

1; remove neg lug from battery or BOOM (100amp fuse BLOWN)
2; remove ALT
3: new one back connected same.
4: battery NEG lug back
bingo no BOOM.!
every SM manual of every car tells that;.

you said didn't want to start
but I guess you meant starter is dead, or clicks only or will not spin fast as it must.

the 15mins is dead accurate, for 50 years driving seen this happen
as ALT goes dead at night,
in the day engine runs 30min to 1hour dead ALT , HEADS off

the blow fuse is just bay fuse
or worse, a fuseable link, oddity not fun to fix. ever.
thus step 1,

no engine told but let me look on uSA car thjis.
2010 not AVEO5

there it is but what it looks like, hummmmmm

The first place to start would be with the new ignition switch.What you are saying sounds like a defective switch.

Have your alternator checked, it may charge some but not enough to keep your battery charged. If it has an internal short (blown diode)it can discharge your battery.

I have a link that explains how you may have blown a fuse while jump starting your HHR.

It states that using the junction box under the hood to jump start can blow your electronic power steering fuse. It says it is a 60 Amp fuse.

http://www.chevyhhr.net/forums/showthread.php?t=660

I hope this helps, if so let me know with some feedback please.

Thank you and good luck,

Hal

serpentine belt came off. check for bad pulleys also

you might have a short in the charging system

If checking battery cables and wiring to the starter and ground points doesn't help. Have the battery checked for a bad cell. Preferably before you charge it.

This is a known problem with the power steering which will probably require replacement of the power steering motor. The HHR uses an electric 12V DC motor to provide the power steering force, and they have started failing.

GM is recalling the Cobalt and other vehicles for this issue, but not yet the HHR. If you are out of warranty, you will probably be personally responsible for the cost of diagnostics and replacement.

You will probably need to contact your dealer unless you are able to replace the motor yourself. Sorry.

We have an HHR SS 2009, it is on its 3rd battery. Just had it hauled in again today. Batteries they are using are made in China Delco is telling me, as long as it is in warranty I will have them keep hauling it. The first time they put a battery in it sat for 6 days and was dead when we went to start it, this time only 3 days. I am not pleased with my purchase at thsi point.

The best way is to get a voltmeter and check the voltage of the battery with the truck running and not running. When the truck is running, the voltage across the battery terminals should be aboput 14.9 volts (showing the alternator is charging the battery). With the truck off, the battery voltage should be about 12 volts (showing that the battery is holding the charge). From there, you should be able to tell which is bad.