How to set clock on trailblazer - 2005 Chevrolet Trailblazer Ext

did you check the courtesy/clock fuse?

disconnect the battery and wait for the clock to show the right time then re-connect the battery if you cannot find the knobs ,how about the trip meter knob and try turning it gently to the left or the right to adjust the time

In the lower lefthand corner of your radio unit there are two small buttons, one is marked H (or HR) and the other M (or MN). These are pressed to change the Hours and Minutes of the clock display.

Look at your volume knob for your stereo. Right below that are two small black buttons. The left is for hours, the right is for minutes.

There should be two small buttons on the face of the radio towards the bottom. One is marked H for hours and the other M for minutes. With the igintion turned on... press and hold either of them until the clock goes into "set" mode. Adjust time accordingly and then just let it set for a few seconds and it will be set.

Turn the igniton to the "on" position. The radio should have two small buttons on it marked H (for hours) and M (for minutes). Press and hold the H button for a few seconds and the clock will go into a "set" mode. adjust the hours until the time is correct and then let go of the button and you will be all set.

I cant remember counter or clock wise but doesnt matter I believe it comes off counter clock. The easy way is if you have a air compressor and a air hammer. Take the flat bit place on large nut lightly hit the nut until it breaks free. If not take the largest wrench that fits good and safely tap it hard with a hammer , fast hard blow will break it loose. hope this helps

if no owner manual try www.edmonds.com for one online

There is a button to the left (hour) and right (minute) of the tuner knob on the radio. Press and hold those buttons to adjust the clock.

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.