Question about 2002 Chevrolet Tahoe

2 Answers

How to repair cruise control?

I checked all related fuses,checked switches,checked wires at servo,all checked ok.Bought new stoplight switch and new servo.Still not working.About to pull my hair out.Any help would be greatly appreciated. THANKS

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.

    New Friend:

    An expert that has 1 follower.


    An expert who has answered 20 questions.

  • Contributor
  • 23 Answers

Try from Servo control follow connection To I beleive Transmission casing . Look for Burnt wiring / frayed / damaged ...Cruise should maintain speed signal Like speedo cable . Computor management black box / ECM may have direct control so Look for engine bay fuse boxes = 2 under hood . More fuses ++ relays 2 check inside cover is diagram of size + what it controls . A Reset 2 ecm may help by disconnecting Battery - Let sit 30 mins.. Older models + 4 wheel drive Trans has Gear wheel of plastic 2 count revolutions as speedo cable does . If said wheel teeth have worn out then Cruise counts incorrect or fails 2 activate . If you replaced brake pedal Light activation switch then be sure brake Tail lights DO work if not the cruise will fail as brake pedal is part of safety feature to turn it off in emergency disconnect . The signal light Stalk that Turns off L / R signals is Common Item 2 wear out BUT it also controls Turning on cruise or setting ...IF you have Steering wheel on / off / setting control - then issue can be frayed / cut wires due 2 steering wheel movement remove wheel BUT 1 st disconnect Air Bag Fuse then wheel and search connections .....Good Luck ...

Posted on Apr 17, 2015

Testimonial: "This is an excellent answer to my post.I haven't had time to check yet,but will do soon.Thanks a lot."

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.


    An expert who has answered 20 questions.


    An expert that has over 10 points.

  • Contributor
  • 27 Answers

I agree ck the serv first if not pull ur posted wire off leave off for @least 3 minutes to give it time to reset, edt o luck

Posted on Apr 19, 2015


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: My cruise control on my 2008 chevy pickup stopped

after reading every post on every forum about the cruise control, I decided to pull the brake switch off of the pedal and have a look. I read somewhere that there is a spring loaded mechanism inside the switch that goes bad and makes the cruise think the brake is engaged. Upon inspecting the switch I saw a flat white bar that the brake rod depresses that engages the mechanism inside the switch. So like I always do... I sprayed the white swtch bar with wd 40 and worked it with a screw driver by pushing it and realeasing it until I heard it make a solid sounding click as it engaged and disengaged. I reinstalled the brake switch and all is well. Seems a little dust has clabbered the lubricant and was causing it to stick. So all is good and my cheap @ss didnt spend a dime. Total time including research was 1.5 hours.
Hope this helps someone else

Posted on Feb 02, 2012

  • 330 Answers

SOURCE: Cruise control just stopped working

Are you use cruise control a lot?

Posted on Jul 06, 2008

  • 28 Answers

SOURCE: heater blower switch does not

Do you have power to the switch? Do you have power to the fuses? They may not be blown but they may also not have power. Not a likely scenario but possible. First look for power to the switch. No power trace to fuses. Next check if switch is getting power doe switch send power. Does blower motor receive power after you verified that switch has power. Is the switch from the dealer or a/m? Try these things first. If the switch is used than the switch is probably bad. Also there is a resistor on the blower motor that can go bad and that could be the problem.

Posted on Jul 29, 2008

  • 2 Answers

SOURCE: blower control switch

I had this same problem and it turned out to be a simple fix,my problem was the hot wire contact on the blower itself.Fix was cleaning the contact w/sandpaper and replacing the part on the hot wire that connects to it.

Posted on Dec 29, 2008

  • 4 Answers

SOURCE: 2004 chevy impala no headlights

there's a button on the right side of the steering wheel that says serv push that button. It's put right there for when they use them as police cars you can cut the headlights off. You will probably notice that dash lights are on.

Posted on Mar 03, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My Lincoln Navigator won't shift out of park

The shift interlock system works off of the stoplight switch. Check to see if your stop or brake lights are working. If they aren't it may be a fuse, stoplight switch, or the wires going to the switch. It is not uncommon for the wires to the switch break right near the connector or wear through where they rub on a metal bracket and blow the fuse. Sometimes if you unlock the column without turning on the ignition it will come out of park. Be careful! If your brake lights don't work, put on your hazard flashers while you drive to your nearest repair shop.

Dec 20, 2017 | Lincoln Cars & Trucks

1 Answer

My cruise control does not work on 1994 Ford 150. Fuse is fine, where to look next? Thank you

Which fuse ? There are two that supply B+ to the speed control servo ! One is located in the under hood fuse box and the other in the fuse panel inside the vehicle > The fuse may look fine but is there B+ voltage across the fuse . Check it with a volt meter . Check B+ voltage at the speed control servo , Black with yellow trace and P/O wire , what ever color that is . Is there B+ at the control switch ? The speed control servo supply's voltage to the cruise control switch . You can check it at the speed control servo as well . They could be videos on youtube showing how to test it .
Diagnose cruise control failure on 1993 Ford 150

May 31, 2017 | Ford Cars & Trucks

1 Answer

94 merc grandmarkee wont go into park wont start will start if you wiggle in nutral

Park neutral safety switch could be bad , also the shift interlock safety system .
Shift Interlock System A brake/shifter interlock system consists of the following:
  • ignition switch (11572)
  • brake pedal stoplight switch (13480)
  • brake shift interlock module
  • brake shift interlock solenoid assembly (attached to key interlock assembly)
  • necessary wiring
On floor-shift vehicles, the ignition/shifter interlock cable (3F719):
  • locks the floor shift transaxle range selector lever in the PARK position when the ignition switch is in the LOCK position.
  • requires the floor shift transaxle range selector lever to be in the PARK position to turn the ignition switch to the LOCK position.
Condition Possible Source Action
  • Shift Interlock System Does Not Release or Lock Properly
  • Circuitry open/shorted.
  • Blown fuse.
  • Damaged stoplight switch.
  • Damaged shift lock actuator.
  • GO to Pinpoint Test A .

  • Check Fuse 5 (5A) located in fuse junction panel.
Is fuse OK?
  • Turn ignition switch OFF.
  • Remove Fuse 5 (5A).
  • Disconnect shift-lock actuator connector C203 located to the right of steering column.
  • Measure resistance of the Circuit 1003 (GY/Y) between the correct terminal of Fuse 5 (5A) and ground.
Is resistance greater than 10,000 ohms?
Yes No REPLACE Fuse 5 (5A). GO to A3 . SERVICE Circuit 1003 (GY/Y) wire between fuse junction panel and shift-lock actuator. A3 CHECK POWER SUPPLY FROM FUSE 5 (5A)
  • Reinstall Fuse 5 (5A).
  • Turn ignition switch to RUN.
  • Measure voltage on Circuit 1003 (GY/Y) wire and ground.
Is voltage greater than 10 volts?
Yes No GO to A4 . SERVICE Circuit 1003 (GY/Y) wire between interior fuse panel and shift-lock actuator. A4 CHECK POWER SUPPLY FROM FUSE 28 (15A)
  • Turn ignition switch OFF.
  • Disconnect connector C2016.
  • Turn ignition switch ON.
  • Measure voltage on Circuit 10 (LG/R) and ground.
Is voltage B+?
  • Turn ignition switch OFF.
  • Disconnect shift-lock actuator connector C203.
  • Apply brake pedal.
  • Measure voltage on Circuit 810 (R/LG) wire and ground.
Is voltage greater than 10 volts with brake pedal applied and less than 1 volt with brake pedal released?
Yes No GO to A6 . SERVICE Circuit 810 (R/LG) wire between stoplight switch and shift-lock actuator. A6 CHECK SHIFT-LOCK ACTUATOR GROUND
  • Measure resistance of Circuit 57 (BK) and ground.
Is resistance less than 5 ohms?
Yes No REPLACE shift-lock actuator. SERVICE BK wire.

Mar 30, 2017 | Cars & Trucks

1 Answer

2002 f150 cruise inop shows code 3?

  • 3 flashes - deactivator switch is open or circuit defective.
    • Flash code 3 - deactivator switch circuit failure
    • Central junction box (CJB) fuse 13 (20A).
    • Circuitry.
    • Deactivator switch.
    • Speed control servo.
    • Go To Pinpoint Test H .
    Speed Control Servo C122
    Measure the voltage between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the speed control servo C122 pin 10, circuit 57 (BK), harness side.
    • Is the voltage greater than 10 volts?
    Yes INSTALL a new speed control servo. REFER to Speed Control Servo in this section. REPEAT the self-test.

    Deactivator Switch C1025
    Measure the voltage between the deactivator switch C1025, circuit 10 (LG/RD), harness side and ground.
    • Is the voltage greater than 10 volts?
    Yes GO to H3 .

    No REPAIR the circuit. REPEAT the self-test. H3 CHECK CIRCUIT 307 (BK/YE) FOR AN OPEN Measure the resistance between the speed control servo C122 pin 9, circuit 307 (BK/YE), harness side and the deactivator switch C1025, circuit 307 (BK/YE), harness side.
    • Is the resistance less than 5 ohms?
    Yes INSTALL a new deactivator switch. REFER to Speed Control Deactivator Switch in this section. REPEAT the self-test.

    No REPAIR the circuit. REPEAT the self-test.

Nov 23, 2016 | 2002 Ford F-150

1 Answer

How to replace the brake light switch on a 1997 grand marquis



  1. Disconnect the wire harness at the connector from the stoplight switch.
NOTE: Locking tab on connector must be lifted before connector can be removed.
  1. Remove the hairpin retainer and slide the stoplight switch, the push rod and the nylon washers and bushing away from the brake pedal. Remove the stoplight switch by sliding the stoplight switch up/down as required to remove.
NOTE: Since the stoplight switch side plate nearest the brake pedal is slotted, it is not necessary to remove the brake master cylinder push rod and one spacer washer from the brake pedal pin.

  1. Position stoplight switch so that the U-shaped side is nearest the brake pedal and directly over or under the pin. Then slide stoplight switch down or up trapping the master cylinder push rod and black bushing between the stoplight switch side plates. Push stoplight switch and push rod assembly firmly toward brake pedal arm. Assemble outside white plastic washer to pin and install hairpin retainer to trap whole assembly.
CAUTION: Do not substitute other types of pin retainers. Replace only with a production hairpin retainer. Component damage may occur.
  1. Assemble the wire harness connector to the stoplight switch.
NOTE: Stoplight switch wire harness must have sufficient length to travel with stoplight switch during full stroke of brake pedal. If wire length is insufficient, reroute harness or service as required.
  1. Check stoplight switch for proper operation.

Dec 18, 2015 | 1997 Mercury Grand Marquis

1 Answer

My running lights are working just fine no brake lights any suggestions? 1999 Lincoln continental

Brake light switch ? Lighting control module , fuse's ?
The stoplight switch is protected by Fuse 32 (15A). This fuse is hot at all times. With the stoplight switch closed, power is provided to the stoplamps through the lighting control module through Circuits 9 (LG/O) and 5 (O/LB). Ground is provided to the stoplamps through Circuit 57 (BK).
Symptom Chart-Stoplamps
Refer to the Electrical and Vacuum Troubleshooting Manual for connector numbers cited in the pinpoint tests. Use Rotunda 88 Digital Multimeter 105-R0053 or equivalent to perform pinpoint tests.
Symptom Chart-Stoplamps Condition Possible Source Action
  • No Communication With Lighting Control Module
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test BA .
  • Stoplamps Inoperative
  • Open fuse.
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test
You may want to take to a repair shop !

  • Press stoplight switch.
  • Check stoplamps and rear high mount lamp.
Are lamps on? Yes No RELEASE switch and make sure that lamps turn off. CHECK Fuse 32 (15A). REPLACE open fuse if open, RESTORE vehicle, RETEST. If fuse is good, GO to BB2 . BB2 TEST STOPLIGHT SWITCH INPUT
  • Connect Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to data link connector.
  • Enter diagnostic data link.
  • Enter lighting control module.
  • Enter PID/data monitor and record.
  • Select PID: BOO_LCM - Stoplight Switch Status.
  • Hold stoplight switch.
Does data display read ON? Yes No GO to BB5 . GO to BB3 . This is with a factory scan tool , a code reader will not work !
  • Test for voltage at input Circuit 10 (LG/R) to stoplight switch connector C253 .
Is B+ present? Yes No GO to BB4 . SERVICE Circuit 10 (LG/R) feeding stoplight switch. RETEST system. BB4 TEST VOLTAGE OUTPUT AT STOPLIGHT SWITCH
  • Test for voltage at output Circuit 511 (LG) of switch connector C253 .
  • Press stoplight switch.
Is voltage B+ at the switch? Yes No SERVICE Circuit 511 (LG). RETEST system. REPLACE stoplight switch. RETEST system. BB5 TEST POWER TO LIGHTING CONTROL MODULE
  • Disconnect connector C207 from lighting control module.
  • Test for voltage at connector Pin C207 , Circuit 907 (Y/W) and Pin C207 , Circuit 906 (R/O).
Is voltage B+? Yes No GO to BB6 . SERVICE Circuits 906 (R/O) and/or 907 (Y/W). RETEST system. BB6 TEST OUTPUTS
  • Using jumper wires, short Pin C207 , Circuit 907 (Y/W) to Pin C207 , Circuit 9 (LG/O). Using jumper wires, short Pin C207 , Circuit 906 (R/O) to Pin C207 , Circuit 5 (O/LB).
Do stoplamps illuminate? Yes No REPLACE lighting control module. RETEST system. SERVICE Circuits 5 (O/LB) and 9 (LG/O) for open circuit or damaged bulbs. REPLACE open bulbs as necessary. RESTORE vehicle, RETEST. This is Lincoln factory service info !

Jul 04, 2015 | Lincoln Cars & Trucks

1 Answer

Need help troubleshooting cruise control in a 1994 ford explorer 4×4 w 4.0 engine

Hi Mike , what have you check so far ? fuse's , do you have the switches on the steering wheel or the column ? Does the CC light on the dash light up when push the on Button ?
ELECTRONIC SPEED CONTROL SYSTEM Condition Possible Source Action
  • Speed Control Inoperative
  • Blown fuse.
  • Circuitry.
  • Stoplight switch.
  • Burnt stoplamp bulb.
  • Speed control actuator switch.
  • Vehicle speed sensor.
  • Speed control servo.
  • Programmable electronic speedometer/odometer module (PSOM). (Aerostar only).
  • GO to Pinpoint Test A .
Do you have a volt meter an do you know how to test electrical circuits ? I have factory pin point test chart if you can use it !

May 15, 2015 | Ford Cars & Trucks

1 Answer

04 jeep liberty brake lights wont work

Hi Jodie,you have a stoplight switch attached to your brake pedal,may need a flashlight to see good,check and see if it is not loose,it has a switch on it that is engaged when the brake pedal is pressed,By looking at it,you can tell if it's bad,here's a link to the switch,you can take your's off and take to AutoZone and get a new one and install,if this doesn't work then take off and return for a refund,you can get a meter and check if current is going to switch,if it is then bad switch,if not then fuse is bad in fuse box inside by driver side. Stoplight Switch at AutoZone com Best Stoplight Switch Parts for Cars...

Dec 05, 2014 | Cars & Trucks

1 Answer

How do i fix 1999 jeep grand cherokee cruise control

Test and make sure brack switch and lights are ok.
make sure throttle position sensor and speedometer is ok.
check electricat connector and vacuum lines are good and connected at cruise servo.
make sure fuse is good.
check clutch switch.
if all above good replace servo.

Jul 12, 2014 | 1999 Jeep Grand Cherokee

1 Answer

Cruise control not working is there a fuse for this Ron

Hi, there are two brake switches on this system, one is for a Brake Light circuit while the other powers up the Cruise Control and Brake Transmission Shift Interlock Solenoid. This switch is a normally closed switch that opens when the pedal is depressed. Power from this switch is feed to the PCM which then powers up the Cruise Control Servo. The contacts of this brake switch can make poor contact which reduces the current flow to the Cruise Control Servo. To test for this problem, find the brake switch with the Gray wire and Brown wire. Back probe and jumper the Gray wire to the Brown wire. Test drive the vehicle. If the cruise control now works, replace the Cruise/Shift/Interlock Brake Switch. The brake switch is located behind the brake pedal.

May 17, 2011 | 1995 Buick Regal

Not finding what you are looking for?
2002 Chevrolet Tahoe Logo

193 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides