Can a Silverado blower stay on with the key off?
The HVAC blower in this 2003 Silverado stays on speed 5 even with the key off. Here’s how to turn speed 5 of the blower off (while keeping speeds 1-4) and hopefully this will save you from replacing the battery. NOTE: GM issued a special coverage policy for this problem which covers the repair for 10 years or 150k miles, whichever comes first.
What to do if your blower motor won’t turn?
Starting from the rear of the electrical chain, the first point to be concerned about is the actual device itself. You can start the troubleshooting process by testing the motor. Unplug it and apply 12V DC to the blower motor to see if it will turn. It if doesn’t then you have a problem with your blower motor.
Why do my rear lights stay on when the car is off?
You see when the brake is in the depressed mode the light comes on (as it should) but when not pressed it sort of sits on small bit of rubber the size of a pea. Look at the pedal arm itself – about 4 or 5 inces up the arm you will see a small hole where a rubber used to be (if light stays on means it has fallen off).
How can I get my rear lights to turn off?
Very easy to install.. push down the brake pedal and you will the hole.. take the stopper and pop into the hole until it pops.. and do the same for the cruise control switch. And then you are all done.. Then no more problems with lights not turning off. Thank you! I pressed the brake circuitry plug all the way in and they turned off.
When does the rear AC blower turn on?
Three years ago I replaced the rear blower motor control module, which caused the rear AC to start working again. That was no fun with such a tight space to try to loosen and tighten nuts in! Since then there has always been, however, an approximate three minute delay for the rear AC blower to turn on.
Starting from the rear of the electrical chain, the first point to be concerned about is the actual device itself. You can start the troubleshooting process by testing the motor. Unplug it and apply 12V DC to the blower motor to see if it will turn. It if doesn’t then you have a problem with your blower motor.
What causes your car headlights to not turn off?
Some of the issues that can cause car headlights not to turn off include problems with a: 1 Headlight switch 2 Multifunction switch 3 Daytime running light module 4 Light sensor 5 Relay 6 Grounded wire More
How does the HVAC work on a blower?
The HVAC control module provides a low side pulse width modulated signal to the blower motor control processor over the blower motor speed control circuit. As the requested blower speed increases, the HVAC control module increases the amount of time that the speed signal is modulated to ground.
Why does my car blower motor not shut off?
If you have a vehicle with climate control system and a variable speed blower motor and the blower motor won’t shut off and stays on HIGH with the car turned off and the key out, chances are the blower motor motor control processor is toast or the HVAC control module is damaged.
Three years ago I replaced the rear blower motor control module, which caused the rear AC to start working again. That was no fun with such a tight space to try to loosen and tighten nuts in! Since then there has always been, however, an approximate three minute delay for the rear AC blower to turn on.
What to do if your climate controlled blower wont shut off?
If your climate controlled blower processor is shot, be prepared to spend mucho bucks for a replacement. But before you start throwing expensive parts at the problem, you’ll have to do some checking. Start by testing the gray/black wire at the blower motor control processor. First, try grounding the wire. Then try removing it.