Cruise coontrol inoperative

check the bulb sockets for rust.

Check codes next. Quit replacing good parts. Takes a scanner to check cruise control.

Start with the simple and check the fuses and the Stop lamp switch. Check your brake lights, if they're not working, the cruise won't work either. If they're not working, check the fuse for them, if the fuse is fine, then take it into the dealer, there's been a recall issued on the brake switch, so it should get fixed for free.
Cruise Control Disengaged
The powertrain control module (PCM) disengages the cruise control operation based on the signals from the following switches:

* The stop lamp switch
* The TCC brake/cruise release switch
* The clutch release switch, if equipped
* The cruise control On/Off switch

The TCC brake/cruise release switch and the stop lamp switch are mounted on the brake pedal bracket. When the brake pedal is applied, the normally closed TCC brake/cruise release switch opens and the normally open stop lamp switch closes. The PCM detects a low signal voltage on the TCC brake/cruise release switch signal circuit and a high signal voltage on the stop lamp switch signal circuit. When the clutch pedal is applied, the normally closed clutch release switch opens and the PCM detects zero voltage on the CCP switch signal circuit. The vehicle speed stored in the memory of the PCM will be erased when the cruise control On/Off button is turned OFF, or the ignition switch is turned OFF.

The Cruise Control System will disengage when the PCM detects that a driver override function has been active for approximately 60 seconds .

When the Cruise Control System is disengaged, the PCM sends a class 2 message to the instrument panel cluster (IPC) in order to deactivate the cruise control indicator.

Cruise Control Inhibited
The powertrain control module (PCM) inhibits the cruise control operation when any of the following conditions exist:

* A cruise control related DTC has been set.
* The vehicle speed is less than 40.2 km/h (25 mph) .
* The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear.
* The engine RPM is too low.
* The engine RPM is too high, with fuel cut off.
* The vehicle speed is too high, with fuel cut off.
* The system voltage is not between 9 volts and 16 volts .
* The Traction Control System (TCS) is active for more than 2 seconds .
Thank you for using Fixya and start with replacing the stop lamp switch. Even though the brake light work, it;s been known for that switch to cause your issue. that's way there was a recall for it.

Have you had this campaign done yet?

06030: Product Safety - Brake Lamps Inoperative or Continuous Illumination

If the switch is malfunctioning the cruise control will not engage.

You may not have brake lights. i had this happen twice in my canyon its a switch that goes bad and its a recall so it should be free at the dealer installed and everything.

I did not, but they're a recall on the 2004-2006 Colorado trucks for this problem. I have come to find out that the brake lights are not functioning as well. The recall explains that these trucks (2004-2006) is having problems with the brake lights (sensor, switch?) that it would also cause the cruise control not to work. So hopefully I can call the dealership to make an appointment to get it fixed.

brake light switch,replace it
its under the dash at the top of the break peddle takes about 5 min too change

The brake pedal switch.

Check sticker if 05 07 its an 07 vicaversa Check fuse.May have similiar recall

2006 ISUZU I-280 EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH Recall Date: 04/27/2006 Summary: CERTAIN PICKUP TRUCKS MAY EXPERIENCE THE PERMANENT LOSS OF BRAKE LAMP FUNCTION OR BRAKE LAMPS THAT ARE ILLUMINATED AT ALL TIMES. THE CENTER HIGH-MOUNTED STOP LAMP (CHMSL) IS AFFECTED IN BOTH INSTANCES. ALSO, IF EQUIPPED, THE CRUISE CONTROL WILL BECOME INOPERATIVE. ANY TRAILER BRAKE LAMPS WHICH ARE CONNECTED TO THE VEHICLE'S BRAKE LAMP WIRING WILL MIMIC THE VEHICLE'S BRAKE LAMPS WHEN EITHER CONDITION OCCURS. Consequence: A FOLLOWING DRIVER MAY NOT KNOW WHEN THE BRAKES HAVE BEEN APPLIED, AND A REAR-END CRASH COULD OCCUR WITHOUT PRIOR WARNING. Remedy: DEALERS WILL REPLACE THE BRAKE LAMP SWITCH ASSEMBLY. THE RECALL BEGAN ON DECEMBER 5, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438; GMC AT 1-866-996-9463 OR ISUZU AT 1-800-255-6727. Potential Units Affected: 404733 Notes: ISUZU I-280 06030