My 2006 chevy trailblazer fuse to the accessory plugin blew out and I can't figure out which fuse it is.

You may have a short in your wiring and it may cause more damage by touching any metal surface depending were the routing of the wires run through because the whole car is negative therefore I suggest you take it to an expert electronics technician right away for and electronic diagnostic check up!

you obviously have a short to ground on one of the wires to the back (if it was the front the brake shouldn't blow the fuse). the most common problem is usually in a trailer light harness. if you look under the drivers side rear of the truck, down under the tail light there will be a plugin junction. pull this plug-in apart and see if the fuse still blows. if it does then the problem is forward of that connector, if it doesn't then the problem is behind that plugin. be sure to check for "green death" (electrical corrosion) at all joints especially any trailer hook ups.

Check fuse #10 in the rear fuse panel. If fuse OK, try switching passenger side control module into driver's side. Also check for broken wires in wiring harness that goes between body and driver's door.

Brake light problem - if bulbs and fuses (#34 and #43 in rear fuse panel) are good, then only other possibility are the circuit boards where all the tail lights are located.

Noise coming from rear is the mode control actuator in the rear HVAC unit, it is trying to move a stuck blend door.

Check your fuse box (or boxes) for a fuse marked as 'Accessories.'

There are two fuses for the brake lamps system. In the underhood fuse panel, fuse #12 (25A) and in the rear fuse panel, fuse #34 (15A)

Problems WithChevy TrailBlazers
ElectricalProblems
Some of the mostcommon problems with the TrailBlazer involve the vehicle's electrical systemand accessories. Many drivers have experienced problems with the dashboardgauges, including the fuel gauge, speedometer and "check engine"warning light. Additional electrical problems include power automatic doorlocks and windows that fail to work or operate intermittently. These problemscan be difficult to diagnose as they can result from anything from a faultybattery to problems with the wiring or other electrical components.
Read more: Problems With Chevy TrailBlazers ' eHow.com A fuse contains a thin metal bridge between two terminals. When too muchelectrical current is drawn through the fuse the bridge melts, breaking thecircuit. This feature prevents damage to electrical components and limits thepossibility of a fire.The Chevrolet Blazer utilizes small fuses to protect thevehicle's wiring harness from overload. These are typically plug-in blades, notthe glass-barrel fuses used in older vehicles.
Location The fuse panel ona Chevy Blazer is located on the driver's side of the firewall beneath thedashboard. Some later models may be equipped with a fuse panel cover. To removethe cover, pull the retaining clips loose on each side and lift the cover fromthe panel. Replacing a Fuse Locatethe fuse you believe is burned out by its label or use the owner's manual as aguide. To remove the fuse, you may need needle-nose pliers; don't put too muchpressure on the fuse or you could crack the casing. Examine the thin metalstrip between the two terminals. If it is broken, scorched or deformed, it mustbe replaced. Read more: Fuse Box Instructions for a Chevy Blazer ' eHow.com

Fuse box under the hood, there should be a fuse box layout on the underside of the fuse box lid, probably also one in your owners manual.

Did you check for a burned out fuse??

On my LT there are two little buttons below the tune/info knob. One says H and one says M. Push and hold to set time.