Question about 2001 Chevrolet Impala
Cruise control light comes on, all fuses are good, cruise module appears to be good, cable is in place and wiring looks good. When I press the button to set the cruise it does not respond. Prior to not working at all it would slowly tapper off until I lost the function.
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Posted on Jan 02, 2017
SOURCE: Cruise control stopped working
if the fuses are ok then i would say that there is a distruption between the cruise module vehicle speed sensor and the computer(ECM). unfortunately this is something only a qualified tech with diagnostic equipment can correct. i'm sure there are stored fault codes that the tech needs to check and reset. it's been my experience that oftyen times when this problem happens it has to do with the transmission control module which dictates how the engine and the transmission sync up to shift properly and your speed is measured through the transmission circuit thus the cruise control circuit is slaved to that.anymore questions feel free to contact me . just click my user tab on this site
Posted on Apr 26, 2009
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 |
Posted on May 09, 2009
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.
Posted on Jun 02, 2009
this only occured when the ambient light sensor turned on the headlights when it got to dark. if that is happening then check the headlight switch, the one that also dims the interior lights. mine had a burnt connector and fried the circuit board. replaced it and it works good. check for lose wires and connectors in there as well which likely caused the short.
Posted on Feb 18, 2010
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