2003 Chevrolet TrailBlazer A/C only works in position 3, 4 and 5 (the highest). A/C will not work in position 1 or 2.

Try an oil and filter change. If that don’t work you need a tranny specialist.

shift timing solenoid ????? There are 1-2 shift solenoids , 2-3 an 3-4 but no shift timing solenoids . An all solenoids are inside the transmission . Do yourself a favor an take your vehicle to a qualified repair shop .

camshaft position sensor located on 2003 Chevy Trailblazer with 4 2L...

There was a recall on this, see your local Chevrolet dealer.... Recall Date: NOV 01, 2004 Model Affected: 2003 Chevrolet Trailblazer Summary: ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE. Consequences: AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH. Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463. Potential Units Affected: 871473 Notes: GENERAL MOTORS CORP. Read more: http://www.motortrend.com/cars/2003/chevrolet/trailblazer/recalls/#ixzz2jWJ1eDyR

replace blower motor resistor

2003 Chevrolet TrailBlazer 4WD 5.3 liter V-8 VIN "T"

Cylinder # passenger side radiator to firewall 2-4-6-8
Cylinder # driver side radiator to firewall 1-3-5-7

MY 2003 MALIBU AC WORK VERY COOL FOR ABOUT ONE HOUR AND THEN TURN A BIT HOT AND THEN NO AIR COME OUT WHY I HAVE CHECK THE FREON AND ITS OK .

test the fan first, should have high at 12vdc.then look for the resister, thats probably the culprit.....good luck

souns like a bad blower resistor.the resistor controls the different speeds.sometimes every speed except the highest will stop working.the blower resistor is almost always near the blower motor.

check the brakelight switch on top of the brake pedal first and if that does not fix it then check out the fuse link and ground and here is a place for GM parts if needed Schram auto and truck parts 1-800-292-1032