Question about 2002 Chevrolet TrailBlazer

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The cruise control does not work. It failed completely. All other electrical funtions normal.

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Does the button for the crusie feel normal? if so check the fuse also check the intake cable to see if the crusie cable is bound up and spray wd-40 on it and work it back and forth with your hads to make sure it's free. if yo still can't find the problem e-mail me and I will tell you what to check next.

Posted on Nov 17, 2009

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How do I troubleshoot the cruise control of a 2003 Alero?


It's probably a problem with cruise control module , located under the hood in engine compartment . Or a bad connection somewhere . Do you know how to do electrical testing ? Is the air bag light lit on the instrument cluster ?

Could have DTC'S - diagnostic trouble code's stored .
DTC P1554
The powertrain control module (PCM) inhibits cruise control operation when certain conditions are not appropriate for cruise control operation. The PCM removes the ground from the cruise control inhibit signal circuit in order to disengage cruise control operation.
DTC P1585
Output driver modules (ODMs) are used by the powertrain control module (PCM) in order to turn on many of the current driven devices that are needed to control various engine and transaxle functions. DTC P1558 set indicates that an improper voltage level has been detected on the signal circuit which controls the cruise control inhibit circuit.
Action Taken When the DTC Sets
• The PCM will not illuminate the malfunction indicator lamp (MIL).
• The PCM will store the conditions present when the DTC set as Failure Records data only.

Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions. However, steep grades may cause variations in the selected speeds. The electronic cruise control system has the capability to CRUISE, COAST, RESUME SPEED, ACCELERATE, and TAP-UP or TAP-DOWN.
The main parts of the cruise control system are:
• The cruise control module assembly
• The function control switches
• The cruise control release switch
• The clutch pedal position switch (CPP), if equipped
• The stop lamp switch assembly
• The vehicle speed sensor
The cruise control system uses the cruise control module assembly to maintain the desired vehicle cruise speed and operation. The cruise control module assembly has an electronic controller and an electric stepper motor to vary the throttle in each different cruise control mode. The electric controller monitors vehicle speed and operates the electric stepper motor. The stepper motor operates in response to the electronic controller, to maintain the desired cruise speed. The electric stepper motor moves a strap that is attached to the cruise control cable which moves the throttle linkage. The cruise control module assembly contains a low speed limit which will prevent system engagement below a minimum speed of 40 km/h (25 mph). The module assembly is not serviceable.

Dec 11, 2016 | 2003 Oldsmobile Alero

1 Answer

Cruise control not working in my 2009 Silverado. It went out gradually over the past several months, pretty much worked intermittantly.


cruise control module has failed. or if your brake lights are staying on, then brake light switch has failed and not allowing cruise to engage. Have someone stand behind truck and see if brakes are working properly, if not- replace brake light switch. if fine, then swap out cruise control module under hood.... prob find one at a junk yard.

Feb 02, 2016 | 2009 Chevrolet Silverado 1500

1 Answer

Why wont my cruse not work now, checked every thinkthing i am told, fuse vacuum lines everything


What was it doing before? What changed? Who did the work? "tripple check" Probably bad connection in the electrics.

Mar 13, 2015 | 1996 Ford Taurus

1 Answer

Cruise control will not work


Check the cut off switch on the brake (or clutch if a manual trans)

Jan 18, 2013 | 1998 Ford Contour

1 Answer

I have a 1994 mercury grand marquis. The cruise control stopped working today so I believe a fuse blew out. Can you tell me what is the number slot in the fuse box that is for cruise control? Thank you


Hi Debbie,

First I think it should be said that whatever is wrong with your cruise control it is definitely NOT caused by a fuse. Fuses do not cause electrical circuits to fail. Failing electrical circuits case fuses to blow.

With that said, there are 2 fuses that affect your cruise control operation:
Fuse #6 (10 Amp) and Fuse #7 (15 Amp), both of which are located in the instrument panel fuse block. Fuse #6 is the power feed to the cruise control servo and Fuse #7 is the brake lamp fuse, which provides power to let the cruise control servo know when you have applied the brake.

Oct 17, 2011 | 1994 Mercury Grand Marquis

1 Answer

My windsheild wipers and cruise control only work internitently. I replaced the multi function switch and the problem persists...


The cruise and the muilty funtion switch realy don't have that much to do with each other except the brake switch . Now if your rear lights are working and for that matter all of your lights are working . The problem is most likely that there is a second brake switch to shut off the cruise control when you apply the brakes thats the problem . Its located under the steering wheel looks like a square box 4x4 inches about 3/4 of an inch thick black plastic if you can follow the wires it hooks to the brake main switch. I ts derictly under the steering coloum its your problem

Sep 19, 2011 | 1998 GMC Jimmy

1 Answer

First, the A/C control display is very dim (almost impossible to see) after taking my car to have a GPS tracking device installed. Second, the Instrument Panel lights are not working, even after turning...


there is wires that control these funtions under the steering column. i would take it back to them and have them at least recheck their work. if they don't, then take it to an electrical shop and explain to them about your situation.

Sep 16, 2011 | Hyundai XG350 Cars & Trucks

1 Answer

Iv been having problems with my brake lights on a 1995 Chevy tahoe . They work fine when i have my signal lights on but not when I brake .. so I bought the switch commutateur interruptor but I can't...


If i have this straight the brake lights work ok when the turn siginal is on but don't when just the brake is applyed . The problem has to be eighter the muilty function switch on the coloum or the switch that controls the cruise control funtion tells it to shout off when you apply the brakes . The pedel switch must be working or you would have no brake lights . I would advice to check the cruise control switch first its linked to the brake pedel switch . Also look for other electrical problems no matter how small that relate to the pedel switch this could be a bad connection at a treminal connector . The cruise control switch is located up under the dask on the drivers side mounted just above the mil connector follow the wires from the pedel switch . However it could still be the muilty function switch on the coloum has shorted out . Your just going to have to look at an figure it out it could be simple or you may need one of these 2 switches . Good luck and think before you do

Aug 15, 2011 | Chevrolet Tahoe Cars & Trucks

1 Answer

Control cruise no funtion


check the fuse and the relay for the cruise control give these websites a try www.alldatadiy.com and www.autozone.com if all fails stop by your local Ford dealership in the parts department and they be able to print off the pictures and diagrams you will need wish you the best of luck Michigan Man.

Feb 15, 2010 | 2005 Ford Freestar

1 Answer

My cruise control will suddenly stop working and the cruise light


I had a similar problem and it turned out to be the brake fluid level. This may be an answer. Also have you had the brakes checked. The cruise control is integrated with the brakes. Any little thing wrong with them effects the cruise.

Oct 02, 2009 | 1991 Toyota MR2

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