The light is on and the fuse is good i go to set it when driving and nothing happens any one have any ideas
The adjustment of the brake light switch or it could be bad. the brake lights can work fine and the part of the switch that works the cruise doesn't The swiches that control it from the steering wheel can losse connection in a part called the clock spring. Vacume connections can effect the cruise but yours is likly cables less therefore doesn't work the cruize.
SOURCE: My cruise control just stopped working. All the
odometer cluster in my 2001 model suburban 1500/ goes on and off when i hit bumps or when i turn car off can you tell me whats wrong with it or do i just need another one.
SOURCE: cruise control indicater lights are on but will not engage
Check the cruise control module connector, see if it looks good and there is power to the module over one of the white wires in the 10 pin connector.
There are two white wires going to the module which is located at pins "G" and "J". There should be no voltage at pin "G" until the brake switch is applied. This switch is also used to operate the brake lights. The two wire colors on this switch are white and orange. At pin "J", this signal goes to the PCM to tell it that the cruise control module is engaged. Here is the info on the cruise control connector:
Pin A: gray - cruise control on switch signal: 12VDC with cruise switch on
Pin B: dark blue - cruise control set/coast switch signal: 12VDC with switch pressed
Pin C: gray/black - cruise control resume/accel switch signal: 12VDC with switch pressed
Pin D: brown - cruise control release signal: 12VDC with brake pedal not pressed: 0V when pressed
Pin E: black/white - ground
Pin F: brown - ignition 3 voltage: 12VDC with ignition on
Pin G: white - stop lamp switch signal: 0V with brake pedal not pressed: 12VDC when pressed
Pin H: dark green - cruise control inhibit signal: 0V if PCM detects an inhibit condition
Pin J: white - cruise control engaged signal: voltage (unsure of value, either 12VDC or 5VDC) when signal engaged
Pin K: dark green - vehicle speed signal: 1 to 5 volts depending on speed
This view of connector is facing it after it is separated.
Trying to post the connector view, the lines may not quite line up, but at least it should show you the pin positions.
| F G H J K |
| E D C B A |
SOURCE: Brake lights not functioning and cruise control will not set.
Lift the pedal, and see if the light goes off, if it does, there is a switch on the pedal that is out of adjustment. If it does not go off, the switch could have fallen off, or it is broken. Anyways, it is under the dash, should be right up the brake pedal. First, try to adjust it, to get it closer to the brake pedal arm, if it doesn't go off, it should be bad, take it off, and take it to the auto parts place, they should be able to test it, with a multimeter.
This is probably why the cruise control does not work also, as when you drive down the road and hit the brakes, the cruise goes off.
SOURCE: cruise control no longer works. Cruise light comes
Make sure the cable from the cruise control motor to throtle is not broken or unattached.
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