Cruise control does not work

The engine compartment fuse block is located on the driver's side of the engine compartment

Check fuses 21 and 42.
https://my.gmc.com/content/dam/gmownercenter/gmna/dynamic/manuals/2005/gmc/canyon/2005_gmc_canyon_owners.pdf

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

All fuses and circuit breakers for a 2005 GMC Canyon are located in the engine compartment fuse block.

This subject is covered in the 2005 GMC Canyon Owner's Manual on pages 5-98 through 5-102.

If you do not have an Owner's Manual, you can download a free PDF version clicking on the following direct link:

2005 GMC Canyon Owner's Manual

Ok I'm going to be honest and tell u the truth, this exact thing happened to me. There is a 4 part pigtail relay plug connecting to a transister, the high only works because it bypasses the transiter and go directly into the fan power, but setings 1,2,3 eventualy and no longer usuable due to the transister input to the specific speed burning out, u can lose differnt speeds and differnt times depending on which speed u prefer the most. If u prolong the repaire even longer it will cause a short and u will burn fuses or even the main fuse in your fuse box. How to fix. I didn't perform the repair but I read that the relay and the pigtail are both located next to the fire wall. It cost me a few hundred dollers, and only 35 dollers for labor, the rest was the transister and the pigtail being the most. Sapposidly it was vary easy to get to, and if you look in a haynes repair manual it will give you the electrical scymatics of the wireing for the fan blower 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.

check your fuses. If it quit working immediately after the recall work then you need to take it back and make them fix it.

Check for fuse and relay..
Also check all vacuum lines related to throttle body and/or intake..

Rate well ;o)

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.

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