What to do if your GMC cruise control is not working?
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What does it mean to have cruise control?
Cruise control is a system to maintain vehicle speed without direct driver input. When you want to engage cruise control, you first turn the system “On” with a button or switch. However, this alone does not start the cruise control.
Why is my cruise control light not working?
Aftermarket lighting, such as LED brake light conversion, might trick the CCM into thinking a brake light is blown, as LED bulbs draw less current than incandescent bulbs. Fuses and Relays – On some vehicles, fuses and relays are used to protect the cruise control actuator circuit.
Can a brake light disengage cruise control?
Brake Light Switch – As cruise control is automatically cancelled by depressing the brake, some vehicles may disengage cruise control if it cannot detect the brake light switch. Brake Lights – In some systems, cruise control is disabled when a brake light is blown.
What do you do if your Cruise Control is not working?
You can increase or decrease cruise speed by tapping a button or lever, and you can cancel cruise control by hitting the “Cancel” or “Off” buttons or stepping on the brake. This electronically-controlled throttle body is modulated directly by the engine control module, both for direct driver input and cruise control.
How does a cruise control system work in a car?
Early systems used a vacuum motor and cable, but these eventually changed over to electric motors. Most recently, with the development of drive-by-wire or electronic throttle control systems (ETCS), cruise control is built into the engine control module (ECM), which controls the throttle body electronically.
Why does cruise control not work when brake light is blown?
Brake Lights – In some systems, cruise control is disabled when a brake light is blown. Aftermarket lighting, such as LED brake light conversion, might trick the CCM into thinking a brake light is blown, as LED bulbs draw less current than incandescent bulbs.
Can a ECU be reset in a new car?
Can a ECU be reset? Yes, all ECU (Engine Control units) can be reset and be should reset once per manufacturer’s guideline for a smooth relearn process or upon installing a replacement unit.
How does the cruise control work on a Chevy Silverado?
To set the cruise at the desired speed, a driver pushes an input on the cruise control switch. This action signals the cruise control module (or powertrain control module) to monitor the speed sensor and actuate the throttle as necessary.
Where can I find the cruise control switch?
This switch can be found on the steering wheel, although some switches can be found on the dashboard. If only one setting on your cruise control does not work, chances are high that the switch is the problem. Test the switch the same way the brake switch is tested.
What happens if the cruise control system fails?
The system uses sensors and modules to communicate vehicle speed and driver inputs at a very fast rate. A failure in one of these systems can lead to total loss of cruise control operation. This article applies to the Chevrolet Silverado 1500 (1999-present).
Why is the cruise control not working on my Chevy Silverado?
Open the fuse boxes and read the cover for fuse locations associated with cruise control. Fuses break due to age, but a blown fuse may also indicate a short in the wiring. Figure 1. A good fuse (on the left) compared to blown fuses (on the right).
What to do if your Cruise Control is not working?
A diagram of the stoplamp switch. This switch can be found on the steering wheel, although some switches can be found on the dashboard. If only one setting on your cruise control does not work, chances are high that the switch is the problem. Test the switch the same way the brake switch is tested.
This switch can be found on the steering wheel, although some switches can be found on the dashboard. If only one setting on your cruise control does not work, chances are high that the switch is the problem. Test the switch the same way the brake switch is tested.
Where is the cruise control fuse on a Chevy Silverado?
A good fuse (on the left) compared to blown fuses (on the right). This switch is located on the brake pedal assembly and allows current to flow to the cruise control module to signal cruise deactivation.