check the brake peddle switch.
Which button can you not depress?
If the climate control on a 2003 Trailblazer will not switch from feet to head vents, try changing it to defroster then back to head. The mode button on the dual climate control model can only be switched from face/feet to feet and then to defrost. The feet and head vents worked at the same time.
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u need a new control button switch the button that has 3 nobs on it that control temp .i had same problem only works on 5 right.
Unlocks Emo Crys: Up (+Control Pad), Up (+Control Pad), Left (+Control Pad), Left (+Control Pad), Down (+Control Pad), Down (+Control Pad), Right (+Control Pad), Right Unlocks Jay Jay: L Button, R Button, A Button, Left (+Control Pad), Right (+Control Pad), Y Button, R Button, L Button Unlocks Lil' Rob: L Button, Left (+Control Pad), Y Button, R Button, Right (+Control Pad), A Button, Up (+Control Pad), X Button Unlocks Spitbal: Up (+Control Pad), Up (+Control Pad), Down (+Control Pad), Down (+Control Pad), L Button, R Button, L Button, R Button Unlocks Jack Knife: X Button, A Button, X Button, Y Button, Up (+Control Pad), Left (+Control Pad), Down (+Control Pad), Right (+Control Pad) From wwwgamefaqcom
do they not turn on when door is open but do they turn on when you rotate the button on the left then push button on right
Press the little button by the left hand tuning knob of the radio
Push the button. The one close to the headlight switch.
There is a small button under the channel button. Push it. There is information in the owner's manuel.
Press and hold the enter/select button for 3 sec. until it resets.
on your trailblazer dose it have touch button 4x4 if so have a look at the side of trany there mit be a motor there under a side cover that you have to replace or the switch it self has to be replaced
In a 2002 Chevy Trailblazer, the valet button is typically located on the driver's side, near the ignition switch or on the dashboard. It's often a small, discreet button that can be used to engage the valet mode, limiting access to certain features of the vehicle. If you're having trouble finding it, consult the owner's manual for specific details and diagrams.