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2003 Chevrolet TrailBlazer - Page 6 Questions & Answers
2003 chevy trailblazer cooling temp running 230
Smart man using a scanner for the actual temp. Assuming you're not losing coolant....2 things I'd look at here, 1st is you may have air in the system, make sure to purge all the air. 2nd is your fan clutch, I've replaced a few fan clutches in my own Trailblazer. Have had them bad right out of the box brand new. Have had bad brand new fan clutches on 2 of my last Trailblazers. You should hear it engaging especially in stop and go traffic.
My panel light is out, and my windows won't work
Could be a ground problem . Do you know power ? B+ voltage circuits an ground ? You would need to look at a wiring diagram an a power an ground distribution diagram to see if these two thing's have anything in common . Free wiring diagrams at
http://bbbind.com/free_tsb.html . Videos on you tube on basic automotive electrical trouble shooting , plus voltage drop testing . Doing some basic electrical circuit test's is the way to find electrical problems . Then again it could be two different problems , power window problems can be caused by broken wires in the rubber boot from the body to the driver door main switch. Could be any number of thing's causing these two problems . Unless you have good knowledge of electrical trouble shooting an reading wiring diagrams , this could be something best left to a professional tech .
Ignition switch
Wiggle the key. You might try some graphite or spray lubricant in a pinch. Might work but honestly sounds like something is broken since you shouldn't be able to move the shifter
How do i reset the alarm on my 2003 Chevy Trailblazer...I can't stay my truck.
Hello Narisol,
Excerpt from the 2003 Owners Manual.
Passlock
Your vehicle is equipped with the Passlock theft-deterrent
system. Passlock is a passive theft-deterrent system.
Passlock enables fuel if the ignition lock cylinder is turned with a valid key. If a correct key is not used or the ignition lock cylinder
is tampered with, the fuel system is disabled and the vehicle
will not start. During normal operation, he SECURITY light
will turn off approximately five seconds after the key is turned to
RUN. If the engine stalls and the SECURITY light flashes,
wait about 10 minutes until the light stops flashing before trying
to restart the engine. Remember to release the key from START as
soon as the engine starts. If the engine does not start after
three tries, the vehicle needs service. If the engine is running and the
SECURITY light comes on, you will be able to restart the engine
if you turn the engine off. However, your Passlock system is not
working properly and must be serviced by your dealer. Your vehicle is not protected by Passlock at this time. You may also want to
check the fuse. See Fuses and Circuit Breakers on page 5-85.
See your dealer for service. In an emergency, call the M
Roadside Assistance Center. See Roadside Assistance Program on
page 7-5.
Excerpt from the 2003 Owners Manual.
Testing the Alarm The alarm can be tested by following these steps:
1.
From inside the vehicle, Iower the driver's window and open
the driver's door.
2.
Activate the system by locking the doors with the power door
lock switch while the door is open, or with the remote keyless entry transmitter.
3.
Get out of the vehicle, close the door and wait for the SECURITY light to go out.
4.
Then reach in through the window, unlock the door with the manual
door lock and open the door. This should set off the alarm. When
the alarm is set the power door unlock switch is not operational.
If the alarm does not sound when it should but the headlamps flash, check to see if the horn works. The horn fuse may be blown. To
replace the fuse, see Fuses and Circuit Breakers on page 5-85.
If the alarm does not sound or the headlamps do not flash, the
vehicle should be serviced by your dealer.
What caused low beam to fail suddenly?
As far as voltage, check the low beam fuse. Not only check the fuse, use a testlite and check voltage on the fuse circuit. With headlamp switch on and dimmer switch on low beam. See the relay that says headlamp driver module, that is for low beam.
My heater is stuck on the windshield and floor what actuator needs to be changed
Air Distribution
The HVAC control module controls the distribution of air by the use of a defrost actuator and a mode actuator. The modes that may be selected are:
?€¢
Defrost
?€¢
Defog
?€¢
Panel
?€¢
Bi-Level
?€¢
Floor
The mode and defrost actuators are connected to the mode and defrost doors by a cam type linkage system. Depending on the position of the door, air is directed through the HVAC module and distributed through various ducts leading to the outlets in the dash. If the HVAC control module detects a fault with the mode or defrost doors the HVAC control module will try to drive the actuator for a predetermined amount of time, to defrost, which is the defaulted position for the mode and defrost door actuators. When the mode switch is placed in the defrost or defog positions the A/C is commanded on and the recirculation door is moved to the outside air position to help reduce window fogging. A/C is available in all modes and recirculation is only available in the panel and bi-level modes.
Circuit Description
The following DTCs are for the HVAC door actuators:
?€¢
B0248 is for the defrost actuator.
?€¢
B0263 is for the mode actuator.
?€¢
B0408 is for the left air temperature actuator.
?€¢
B0418 is for the right air temperature actuator.
The HVAC control module controls the HVAC door actuators to regulate the airflow through the HVAC system. Each actuator consists of a stepper motor, a logic circuit, and a potentiometer. The potentiometer inside the door actuator allows the module to monitor the current position of the actuator drive shaft. The logic circuit inside the actuators receives control signals from the HVAC control module and controls the internal stepper motor. When a door positional change is required, the HVAC control module calculates a commanded door position. The module compares the commanded door position to the actual door position and determines the needed direction of motor rotation. The module applies a signal voltage to the door control circuit that is an input to the internal logic circuit of the door actuator. A 5 volt signal increases the door position. A 0 volt signal decreases the door position. When the commanded door position is equal to the actual door position, the HVAC control module sends a 2.5 volt signal to the door actuator and motor rotation stops. The ignition 3 voltage circuit provides source voltage to the logic circuit. The module provides ground to the actuator logic circuit through the low reference circuit.
I would start by having the HVAC control module checked for DTC'S -diagnostic trouble codes First . Then check the system by using scan tool data .
1
Did you perform the HVAC Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - HVAC Systems - Manual
2
- Install a scan tool.
- Turn ON the ignition, with the engine OFF.
- With a scan tool, command the appropriate HVAC door actuator ON and OFF while observing the corresponding Door Actual parameter.
Does the scan tool indicate that the value of the appropriate Door Actual parameter changes?
Go to Diagnostic Aids
Go to Step 3
I would
2003trailblazer head light bulb replace
Drivers side: Gotta stick your hand way in there in front of the battery, and take the rubber dust boot off, just slides right off. Twist the bulb out, and disconnect from connector.
Passenger side: easiest if you just remove the air cleaner box, 3 screws, one on the top, one on the right side, and one on the bottom left. Remove these screws, then pull box straight up. You'll then have complete easy access to the rubber dust boot and bulb.
How do I reset the computer after changing the ignition cylinder?
Disconnect the battery, for 45min or so. Always turn all of your HVAC off when disconnecting the battery, tends to blow out your actuator doors. After all done try turning on your AC or your defroster, if your idle turns rough. You'll need to disconnect the battery again, and clean your throttle body.
Why is there a clicking noise under dash near heater?
Classic symptoms of your battery being disconnected for what ever reason. The clicking is your vent actuators that are now bad (happens on occasion when the battery is disconnected). The engines stalls when you turn your DEFROSTER on right, not necessarily the heater. You'll find the stalling when you turn your defroster on OR your A/C. To fix this problem, disconnect the battery again, and clean your throttle body, this will cost you only a can of Seafoam spray about $8 to fix. Hook the battery back up after clean, drive around with HVAC all on OFF!! The computer will relearn the newly cleaned TB and your stalling problem will go away. Fouled spark plugs are a seperate problem. Make sure you're running AC Delco 41-103 plugs. The I6 engine loves these.
What is causing clicking noise under dash?
recently began - hear the "clicking noise" upon startup for about 60 secs - seems to be from the AC/Heater so I turn it off and on. while the noise is "clicking" air flow is greatly impared. Not liking what I read here as sounds like it is going to be yet another expensive repair from what I though was a High Quality Automobile - Mecedes - NOT! just a very expensive automobile to maintain and OFTEN! very disappointed!
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