Question about 2005 Chevrolet Trailblazer Ext

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2005 Chevy trailblazer ext problems 1. Cruise will not set.worked last on 4/12/15 2. While checking fuses for CC problemdome lights stopped working, but worked fine before checking fuses. PLEASE HELP!

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  • Expert
  • 105 Answers

Bummer deal! This may be a way to tell you some tail lights are burnt out. Some cruise controls have a fuse in a second location.
The fuse is not in right or is blown. Check with a new fuse. Hope this helps. ...gc http://www.auto-tune-up-and-repair-options.com/

Posted on Apr 20, 2015

  • 1 more comment 
  • Alicia Thoman
    Alicia Thoman Apr 20, 2015

    I went back through, & changed all 10A fuses under the seat & viola I got the dome lights back. I had O'Reilly Auto Parts check for any pending codes, & there was one. It was p0741 TCC System stuck off. I just had the truck worked on to replace the exhaust manifold, & the front differential was replaced after failure. The mechanic did accidentally damage the seal during reassembly, but fixed that problem. Will come back later today & let you folks know if this has also solved my cruise control issue.

  • Alicia Thoman
    Alicia Thoman Apr 26, 2015

    Sorry about the delay. I still don't have cruise, but everything else seems to be working fine.

  • paulmacintyre
    paulmacintyre Apr 26, 2015

    Hi Alicia. The p0741 is a transmission code concerning the torque converter clutch. Some manufactures will have the cruise control system disabled if there is a transmission problem as a safety implement. clear the codes and most likely the cruise will come back on-line until there is another tranny issue stored in the computer

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  • Chevrolet Master
  • 2,428 Answers

Try replacing the brake switch on the pedel before you open up a can of worms .
Their could be a lot of reasons for this to happen start with the easest one first

Posted on Apr 27, 2015

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  • Chevrolet Master
  • 11,469 Answers

Hi Alicia , did you get your cruse control working ? If not , you vehicle has electronic throttle control an the cruse control is computer controlled ! It doesn't have a fuse of it's own !
The cruise control switches are located on the multifunction/turn signal lever.
The powertrain control module (PCM) monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed. The PCM uses the throttle actuator control (TAC) module motor in order to control the vehicle speed. For further information on the TAC system, refer to Throttle Actuator Control (TAC) System Description .
Ignition positive voltage is supplied from the 10-amp HVAC 1 fuse to the cruise control switch via the ignition 3 voltage circuit. When the normally open cruise control On/Off switch is turned ON, the switch closes and the PCM detects a high signal voltage on the cruise control on switch signal circuit. When the normally open Set/Coast switch is pressed, the switch closes and the PCM detects a high signal voltage on the cruise control set/coast switch signal circuit. To engage the cruise control system, turn the On/Off switch ON and momentarily press the Set/Coast switch. The PCM will confirm that the cruise control enable criteria has been achieved. The PCM will engage the cruise control system and record the selected vehicle speed. Pressing the accelerator pedal, while the cruise control system is engaged, will allow the driver to override the cruise control system in order to accelerate the vehicle beyond the current set vehicle speed. When the accelerator pedal is released, the vehicle will decelerate and resume the current set vehicle speed. The driver can also override the current set vehicle speed via the Set/Coast switch and the Resume/Accel switch. When the cruise control system is engaged, pressing and holding the Set/Coast switch will allow the vehicle to decelerate from the current set vehicle speed without deactivating the cruise control system. When the Set/Coast switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily pressing the Set/Coast switch will allow the vehicle to decelerate at 1 mph increments for each time that the Set/Coast is momentarily pressed, with a minimum vehicle speed of 23 mph. When the normally open Resume/Accel switch is activated, the switch closes and the PCM detects a high signal voltage on the cruise control resume/accel switch signal circuit. Activating and holding the Resume/Accel switch, when the cruise control system is engaged, will allow the vehicle to accelerate to a greater vehicle speed than the current set vehicle speed. When the Resume/Accel switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily activating the Resume/Accel switch will allow the vehicle to accelerate at 1 mph increments for each time that the Resume/Accel switch is momentarily activated, with the maximum acceleration total of 10 mph over the current set vehicle speed . Momentarily activating the Resume/Accel switch, after the cruise control system has been disengaged by pressing the brake pedal, will recall the previous set vehicle speed that is recorded in the PCM.
This is something you should have a qualified technician check out !!!!!

Posted on Apr 26, 2015

  • Alicia Thoman
    Alicia Thoman Apr 27, 2015

    No the CC still is not working.

  • Jeff Armer Apr 29, 2015

    Well Alicia with out testing to see if voltage is present at the cc switch both in an out when turned on you will never know ! An using a factory scan tool makes easy work of that ! These switch have been known to go bad !There is a good chance there is a code set too !

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  • Chevrolet Master
  • 3,218 Answers

Make sure you didn't accidentely hit the dimmer switch on the headlights turning off the dome lights. You may have to have a diagnostic scan run on the cruise control as it is controlled by the body control module. Is the horn working? If not you may have a clock spring issue in behind the steering wheel

Posted on Apr 26, 2015

  • Alicia Thoman
    Alicia Thoman Apr 26, 2015

    Yes the horn works. I resolved the dome light issue by changing fuses.

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SOURCE: 2005 chevy trailblazer, fan switch wont work on all speeds

Had the same problem on my 2005 trailblazer I replaced the resister and wire harness because wire harness was burnt on a few connections. Cost was 75 bucks for both parts at Napa auto parts works fine now

Posted on Nov 23, 2009

sscullys
  • 984 Answers

SOURCE: 2002 Ford F150. Cruise control stopped working.

Did you have the recall done on it ?
recall 05S28. Description: Speed Control Deactivation Switch.

It could be a blow fuse in the recall harness, if you did have it done.

Try the self test, and see what the results are. If you do not get it into self test mode, it could be the fuse in teh recall harness that is blown. The 1st revision of the recall harness was an inline ATM fuse, not sure if the revision 2 was the same. If that fuse is blown, the switch is leaking, and should be checked.

Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

— 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

Posted on Feb 23, 2010

Molson02536
  • 3854 Answers

SOURCE: I own a 2005 GMC Canyon Five CYL and the cruise

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.

Posted on Apr 01, 2010

Testimonial: "Problem was diagnosed correctly and my cruise is working now."

kapishtech
  • 2272 Answers

SOURCE: the power door locks stopped

Sounds like body computer is malfunctioning or the module that controls the door locks lost it's program.Disconnect the battery for few minutes then reconnect and check.In some cases this resets the system computer and all starts working.But if that does not helps then problem has to be checked with the power door lock system.Either a power door lock actuator or the power door lock switch. Usually the most common problems with power door locks are the actuators. They are small electric motors used to lock and unlock the car doors when activated by a switch or remote. Like any electric motor sooner or later it will fail. Replacing an actuator involves removing the interior door panel for access. Some are part of the door latch and some are independent.
Either way, door lock actuators need to be replaced if they are buzzing, working only in one mode or are not working at all. if the problem is with the door lock actuator or just the switch. If a All the door locks, only work when locking and NONE of them work to unlock, then the switch is most likely the cause.

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation

Posted on Sep 03, 2010

DrSpeedo
  • 294 Answers

SOURCE: 2005 Trailblazer Ext: how doi fix a gas gauge on my chevy trailblazer 20...

Common problem on the 03-06 Trailblazer instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Trailblazer fuel gauge problems

Posted on Sep 30, 2010

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