The dealer has to do that.
The 2005 Trailblazer has a 22 gallon tank.
Keyless entry was an option for the 2005 Chevrolet trailblazer model year. Most 2005 Chevrolet trailblazers came with the keyless option.
2005 chevy trailbazer
Need to know what your question is.
There are several ways to fix the secondary air injection system in a 2005 Chevrolet trailblazer. The most common fix is; changing the air filter.
The 2005 Chevrolet trailblazer stereo wiring diagram can be obtained from most Chevrolet dealerships. The stereo wiring diagram can also be found at most auto-parts stores.
With a scan tool.
The coolant temperature sensor, on a 2005 Chevrolet trailblazer 4.2 liter engine, is located just above the thermostat housing. The thermostat housing is located in the front of the engine.
It's a 6 cyl. http://autos.msn.com/research/vip/Spec_Glance.aspx?year=2005&make=Chevrolet&model=TrailBlazer&trimid=-1
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.
Try our enthusiasts forum. www.trailvoy.com
We have detailed headlight replacement instructions on our enthusiasts forum www.trailvoy.com