i have had haynes or chiltons manuals for every vehicle we've owned for many years now other than for our jaguar and that we just leave to the dealership. when we picked this vehicle, the hhr we got it as a running around vehicle. i assumed it would be simple to find a manual and do all those things i am used to doing so we don't have to drive all the way into town for every little thing. but i was so wrong, checked three different auto parts stores in person and online and none carried haynes or chiltons for the hhr. checked the dealer, no, checked online with the hhr owners forum said none were available. even checked with amazon online granted it was last may but still i hoped but no such luck. then on a whim i checked again two weeks ago and there she was. i didn't hesitate to buy it and literally as soon as had mine ordered the other had been sold as well. i just got the manual in the mail yesterday and could not be happier. i have absolutely no plans to rebuild the engine or tear into the electronics but no i can at least change a headlight bulb, aim the headlights, swap out the oil filter, cabin air filter, the very difficult to figure out access to the engine air filter, capacities and so many other things i don't have to rely on others to do for me now as well as saving a small fortune in labor costs to do things i am perfectly capable of doing now with haynes in hand! unless you have a vehicle like a jaguar or range rover for example you really must have a manual like this. it is the best investment for the dollar you can make in your vehicle imho.