If it is a after market fuel cap then the cord will not work on it. If you would like to have the little cord then you have to go the Chevrolet dealer and get a new cap form them. The new cap will have the little cord with it.
6
22 US gallons www.trailvoy.com Trailblazer enthusiasts forum
The thermostat, on a 2005 Chevrolet trailblazer, can be replaced by first removing the water hose. Next, remove the three housing bolts. Take the thermostat out and replace with a new thermostat.
All the newer Trailblazers like your 2005 take 7 quarts.That is with a new oil filter.
Seeing as your not that savvy.. take it to a 'lube shop let them change your oil
5w-30
Oil pan, bottom of engine. There is a plastic cover over it. Take off the small plastic cover.
take to dealer. doors have a control module in them either needs reprogram or replacement CHECK YOUR FUSES.
7 Quarts
It is best for the vehicle if you are at a complete stop, put the trailblazer in neutrail, turn the selection knob to your right to whichever setting you would like, wait for it to engage, then put it in drive and take off!
6.5 litres
2002 Trailblazer take 7 qrts. Check your oil cap for the recommended weight