Most times it is the light switch when none of the lights work. Can you manually turn them on? This over rides the BCM. Interior lights are controlled by the BCM. Try opening the passenger side door, see if they come on. If so, replace the drivers door latch, inside the door. If still no lights. The BCM needs scanned for codes.
SOURCE: i have 2005 chevy trailblazer heater wont work,
Sounds like your water pump is going out or your thermostat is stuck. Check the thermostat first and make sure it is not frozen in the clsed position.
SOURCE: HAVE A 2005 CHEVY TRAILBLAZER WITH P2432 CODE ?
Yhea it's under the truck on drivers side bolted to the transmisson crossmember. There are three 13mm headed bolts holding it on, they go up through the crossmember and bolt to the bottom of the bracket that is holding the air pump on. there are two hoses going to the pump that you need to take off and two electrical connectors. Then you will need to switch a few things over after you get the old one out. Not hard at all, Becarful when pulling the hoses off most of the time the reason they fail is because water has gotten in there, when you take the hoses off you get soaked(i speak from lots of unexpected showers).
SOURCE: 2005 Trailblazer Ext: how doi fix a gas gauge on my chevy trailblazer 20...
Common problem on the 03-06 Trailblazer instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Trailblazer fuel gauge problems
SOURCE: 2005 chevy trailblazer was jump
This is a fairly common problem on Trailblazers. What happens most often is, when jump started, instead of connecting the jumper cables to the battery, they get connected to the studs on the main fuse box under the hood. When this happens, it blows the megafuse in the fuse box.
The megafuse feeds electrical current to most of the circuits in the rear fuse box. If that megafuse is blown, it will have to be replaced, and this should fix your problem. Here is a picture I found on the 'net of the megafuse:
Hope this helps!!
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