How to troubleshoot the cruise control on a Chevy?

Disconnect connector at module, (servo on firewall). Ign on, cruise switch off, brown wire ought to have 12 volts. Cruise switch on. Gray wire ought to have voltage. Using test light, (with clip attached to positive battery cable), test for voltage, (actually checking for a good ground), at black/white wire.

How does an adaptive cruise control system work?

Adaptive cruise control systems, sometimes called “smart” cruise, use radar or laser detection to maintain safe distances from vehicles ahead. Some adaptive cruise control systems merely reduce engine speed to maintain distance, but some of the newest adaptive cruise control systems can also engage the brakes to slow or stop the vehicle.

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.

What’s the voltage on the cruise control wire?

Ign on, cruise switch off, brown wire ought to have 12 volts. Cruise switch on. Gray wire ought to have voltage. Using test light, (with clip attached to positive battery cable), test for voltage, (actually checking for a good ground), at black/white wire.

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.

How often does the cruise control go off?

While that is happening, the cruise control on/off doesn’t work or respond. After the minute is up, the indication goes off and then the cruise control will work. This happens about 25% of the time that I try to use cruise control. Any idea what could be causing this?

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.

Is it OK to use cruise control while towing?

Towing “on the flat” is a snap, and may save you fuel if your cruise control handles the accelerator. However, if you encounter a situation where your transmission begins to “hunt,” that is, to move from one gear to another and back, then you may need to make a change.

What are the cruise control switches on a GM car?

Cruise Control Switches: The required cruise control switch signals multifunction lever of GM steering columns. The on/off signal is normally open switched 12V, the set/ coast signal is momentary 12V, and the resume/accel signal is momentary 12V.

How do you disengage cruise control on a Camaro?

Depressing the clutch switch removes 12V from the cruise control module (pin D) to disengage cruise control. With the exception of the 1999– 2002 Camaro/Firebird cruise control modules, the 1996-newer truck and 1998 Camaro/Firebird cruise control modules can be used as standalone units.

Can a Silverado cruise control fit a 1999 Silverado?

The cruise control works like new. IT DOES FIT A 4.8L with modification. This part CAN fit a 1999 Silverado 4.8L with slight modification. All you have to do is drill out the female hole that goes on the throttle body. Make sure to remove the keeper clip before you start drilling. Great part!!

Can a cruise control fit a 4.8L car?

The retainer needed some modifications to fit my application. After enlarging the hole and thinning out the retainer it works like it was designed for my car. The cruise control works like new. IT DOES FIT A 4.8L with modification.

Where is the fuse for the cruise control?

The cruise control fuse is normally found in the fuse panel located below the steering wheel. Remove the cover of the fuse panel and locate the fuse for the cruise control using the fuse diagram on the fuse panel.

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.

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.

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.

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.