What happens when you change the battery in a Chevy Tahoe?

I am sure some (or all) have heard of this problem, but I need some help because its driving me nuts! I installed a new battery in my wifes 2002 Chevy Tahoe. Immediately afterward, the controls would only blow heat through the defrost setting, no matter what the dial was set to.

Why is my a / C blowing hot air after battery change?

Turned the ac on and it made some motor noises (im sure it was the motors resetting on the actuators) within 30 sec cold air from both sides Ive experianced my a/c blowing hot air after battery disconnect. Turned key off and on a few times and this cleared things up.

How much does it cost to fix a Chevy Tahoe?

Wants 1.5 hr labor to fix it, and the module is 324.00 at the Chevrolet dealer. I have searched the internet for steps to diagnose the problem, but can not find any. Salvage yard wants 70.00 for the control but no guarantee. You connect it and it dosn’t work it is still yours.

Where is the mode actuator on a Chevy Tahoe?

The mode door actuator is above a duct, right above the accelerator pedal. You may be able to manually help it get unstuck and lube the part it moves. Once you see it, turn the mode selector knob and watch the actuator move and get stuck, help it past that spot, lube and it may stay working for a while. chances are, it is just tired.

Why does my Chevy Silverado blow hot air on one side?

This article applies to the Chevrolet Silverado (1999-Present). Does your Silverado blow hot air on one side and cold air on the other? If you have dual zone controls you may have run into this problem before. There is a way to fix this if you’re patient and willing to troubleshoot your way through it.

What to do if your a / C unit won’t blow hot air?

The actuator has lost its way. Hopefully after so many cycles it will reprogramme its self. Or you can take the HVAC fuse out for a few minutes put it back in turn the ignition on and then let it go through its programming sequence. Do not touch anything that has to do with the heating AC system while this is happening. Blend door relearn.

Why is my Radio not working in my Silverado?

– CarGurus after changing the battery in my silverado, the radio and alarm doesn’t work. How do I fix this? how do I get my radio and alarm working again after changing the battery?

How to get anotger code for Silverado radio?

Twarfield each vehicle code is different… you must follow a procedure to get the code BEFORE disconnecting battery or anything. You will have to call a toll free number and enter the codes to get ANOTGER code…. Then afterwards you follow another procedure to enter that code into radio to unlock it.

Do you have to remove the battery cable to change the battery?

Remove the battery. Some cars will not require the removal of the battery while replacing battery cables, but even if it is not necessary, it may make the process easier. Removing the battery can free up room to work and removes any possibility of the cables coming back into contact with their terminals and shocking you.

Why does my AC not turn on after a battery swap?

Immediately afterward, the controls would only blow heat through the defrost setting, no matter what the dial was set to. Also, when I tried the AC the light on the button would just blink and never turn the AC on. Its a real pain in the butt that this happened just from a battery swap!!! I’ve never heard of that problem.

What happens to the climate control when the battery is disconnected?

Here was my understanding. When the battery is disconnected the actuators controlling the climate control can lose their position. They think they are in the cold position when they are really in the hot. Disconnecting the battery again won’t correct it – it’s an on/off thing with the key.

Why is my a / C not working on my Chevy Tahoe?

I ran two wires to the battery to test the compressor clutch and it does engage the clutch when 12v is applied, yet it still doesn’t seem to be cooling. What else should I try? I’m fairly new to troubleshooting a/c systems. Do you think it could be the A/C relay? You said you checked it and it was low, did you fill it up??

What to do if your air conditioner is inoperative after battery change?

When i put the originial back in the A/C wasnt working at all. Before the A/C was fine. I disconnected the battery for 45 minutes and disconnected the AC clutch relay for 3 minutes after connecting battery. I turned on the car, Didnt start the engine. Then i checked the A/C, which started right up.

Is there a reset for a Chevy Tahoe?

Chevrolet Tahoe Questions – battery died, jumped it, now somethings are not working. Engine lights… – CarGurus battery died, jumped it, now somethings are not working. Engine lights stay on, and ABS, Windows will not go back up. is there a reset?

How do you remove a battery from a Chevy Cruze?

*open the plastic doors over the positive terminal and disconnect the positive terminal and the cable going to the 500amp fuse. *the positive terminal and large fuse box uncoils from the top of the battery. A flat blade screw driver will open the clip if you can catch it with your finger. The whole thing can be flipped over tworde the windshield.

What causes a car battery to drain overnight?

This happens when something – a glovebox light, an amplifier, any electrical component – is pulling power from the battery when it shouldn’t. Since the alternator isn’t generating vehicle electricity, the problem component pulls from the battery, slowly draining it overnight until your vehicle won’t start.

Can a car run when the battery is off?

Any electronic device with memory settings, like a clock and radio station presets, draws power from the battery while the vehicle ignition is off. This drain is so small, you can leave a modern truck sitting for a week or more and it will still start up and run fine.

What happens if you replace the battery in your car?

This can cause something minor, like the clock to lose its time, but it can also lead to engine stalling or even a failed smog inspection. In order to avoid this issue, it has become more and more critical that power is supplied to the electrical system while the battery is disconnected, for any reason, including replacement.

What to do if you have electrical issues after replacing a battery?

If you’re experiencing electrical issues immediately after a battery replacement or disconnect, make sure the battery cables were re-attached and tightened down properly. Herculean strength isn’t necessary, but the cables should be snug and not move around or come off of the battery posts.

What’s the best way to replace a car battery?

Whichever type you use, read and follow all instructions, and always use the manufacturer’s recommended replacement battery type and voltage. Step 1: Turn off your vehicle. Step 2: Connect the battery saver, following the instructions carefully. Step 3: Disconnect the old vehicle battery and remove it.

Why is my Chevy Tahoe not turning over?

Note: the PCM crank signal to the starter relay is GROUND not battery voltage so be aware of that while testing. The trick to removing the connectors at the NSBU switch is a heat gun. The sealing grease thats used turns to glue after a few years making removal difficult unless you warm them up first. The Tahoe is running!!!

How to tell if a Tahoe is in neutral?

With key on acc- gages- fuel does not move off empty, battery moves to 12 idiot light glow normal. When key is turned nothing happens, no click or starter will not engage. he shorted the starter and it turns over but will not start. He checked to make sure it’s in neutral.. how can he tell if it a bad neutral safty switch?

Is it normal for a Tahoe to not crank?

The gauges traveling to the extreme left of their range is normal during crank so you can skip that. You can also skip any security (Passlock) issues as it only kills the fuel pump, the engine will still crank regardless. UNLESS it has an aftermarket alarm system. If thats the case, remove it.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

What is a typical GM starting system wiring diagram?

Click on the image here to pull up a PDF of a typical GM starting system wiring diagram. Depending on the year, model and engine of your GM vehicle, your starting system may be less complicated or use only some of the components shown here. For example, earlier anti-theft systems didn’t communicate the same way with the PCM.