Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy

Chevrolet Cavalier: 2000 chevy cavalier, anti theft loc on

Customer Question
2000 chevy cavalier, anti theft...
2000 chevy cavalier, anti theft loc on radio will not reset
Submitted: 6 years ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 9 minutes by:
11/4/2011
Chevy Mechanic: Rmldaytona, Certified Technician replied 6 years ago
Rmldaytona
Rmldaytona, Certified Technician
Category: Chevy
Satisfied Customers: 1,889
Experience: ASE Certified. 13 years Automotive Experience.
Verified

Hello. Thank you for using Just Answer. I hope this information is helpful.

The instructions which follow explain how to enter the secret code to activate the THEFTLOCK-® systems. It is recommended that you read through all five steps before starting the procedure.

IMPORTANT: Enter the secret code as follows; pause no more than 15 seconds between steps:
1. Turn the ignition on. LOC will appear on the display.
2. Press MN (Minute button) and 000 will appear on the display.
3. Press MN again to make the last two digits agree with the secret code.
4. Press HR (Hour Button) to make the first one or two digits agree with the secret code.
5. Press AM-FM after you have confirmed that the secret code matches the secret code you have written down. The display will show SEC, indicating the radio is now operable and secure. If you enter the wrong secret code eight times, INOP will appear on the display. You will have to wait an hour with the ignition on before you can try again. When you try again, you will have three chances to enter the correct secret code before INOP appears

Ask Your Own Chevy Question
Customer reply replied 6 years ago
i tried it it didn't work, will this work if it displays cal then loc
Chevy Mechanic: Rmldaytona, Certified Technician replied 6 years ago

It should. Are you SURE you have the correct code? How many times have you failed to unlock the radio?

Disconnect the battery, touch the 2 cables together for 2 minutes to clear all memory. Start the unlock process all over again.

If no go, then let the vehicle sit with the ignition key in the on position for at least one hour. A battery charger will be required. Then try to unlock the radio again.

Ask Your Own Chevy Question
Customer reply replied 6 years ago
i sent to a sho-1p for repair three weeks ago, and they claimed that i must contact a dealer i did and the dealer told me to try 2-3 and 1-4 but it did not work all my repair manuals say if it says CAL it has to be fix by an computer is that true, but other people say its not true....help
Chevy Mechanic: Rmldaytona, Certified Technician replied 6 years ago

Cal means the radio is not calibrated and/or the radio needs to be set up with a calibration code. You may have put the radio into unlock code calibration mode by mistake.

Attempt to calibrate a number into the radio as follows...

The instructions which follow explain how to enter the secret code to activate the THEFTLOCK-(R) systems. It is recommended that you read through all nine steps before starting the procedure.

IMPORTANT: If you allow more than 15 seconds to elapse between any steps, the radio automatically reverts to time and you must start the procedure over at step 4.

1. Write down any three or four-digit numbers from 000 to 1999 and keep it in a safe place separate from the vehicle.
2. Turn the ignition to ACC or ON.
3. Turn the radio off.
4. Press the 1 and 4 buttons together. Hold them down until --- shows on the display. Next you will use the secret code numbers which you have written down.
5. Press MN and 000 will appear on the display.
6. Press MN again to make the last two digits agree with the secret code.
7. Press HR to make the first one or two digits agree with the secret code.
8. Press the AM-FM after you have confirmed that the secret code matches the secret code you have written down. The display will show REP to let you know that you need to repeat steps 5 through 7 to confirm the secret code.
9. Press AM-FM and this time the display will show SEC to let you know that the radio is secure. The LED indicators by the volume control will begin flashing when the ignition is turned off.

If not...

Disconnect the battery, touch the 2 cables together for 2 minutes to clear all memory. Start the unlock process all over again.

If no go, then let the vehicle sit with the ignition key in the on position for at least one hour. A battery charger will be required. Then try to unlock the radio again.

If this is of no help, the code may have been changed at one time. If that is the case, then the ONLY way to retrieve the current unlock code is with a factory scantool. The scan tool is connected to the vehicle and the radio memory is accessed. Then the tool can either pull the unlock code from the memory, change the unlock code, disable the antitheft feature all together and even unlock the radio.

Ask Your Own Chevy Question
Customer reply replied 6 years ago
it won't work i have to take it to the dealer, thanks any way,
Chevy Mechanic: Rmldaytona, Certified Technician replied 6 years ago

If you still have no luck...

Procedure:

01. Turn the ignition ON (The radio displays CAL LOC) or (LOC)

02. Hold down the Radio Presets 2 and 3 buttons for six seconds

03. The radio display changes from LOC to a three-digit number. Write this number down. Don’t take forever, fifteen seconds max before the next step.

04. Press the AM/FM button

05. The radio display changes to another three-digit number. Write this number to the right of the first one.

06. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

07. Call 1 800 537 5140

08. Listen for, "all others, enter your authorization code"

09. Enter the number from STEP 6 then * (star)

10. Listen to the four-digit number and write it down. It will be repeated twice

11. Turn the ignition ON (The radio displays LOC)

Use the number give from step 10 to unlock the radio.

If the radio does not unlock or the procedure does not give you numbers, you have a radio which is a RDS radio which runs off a class 2 data link and will have to be unlocked with a dealer scan tool. Some of the late model 2000 cavaliers had been setup as 2001 models with a class 2 data network. This will require a factory Tech II scan tool to unlock the radio.

Ask Your Own Chevy Question
Ask Rmldaytona Your Own Question
Rmldaytona
Rmldaytona
Rmldaytona, Certified Technician
Category: Chevy
Satisfied Customers: 1,889
1,889 Satisfied Customers
Experience: ASE Certified. 13 years Automotive Experience.

Rmldaytona is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
I have been looking for a replacement tensioner pulley but
i have been looking for a replacement tensioner pulley but the part has been discontinued...no one can tell me what kind of replacement part fits there now. … read more
Mechanic01
Mechanic01
1,659 satisfied customers
I just replaced my starter and there is no fuel going to my
I just replaced my starter and there is no fuel going to my engine. I believe my theft system is preventing my 2006 chevy silverado truck from starting. How do I get the theft system to reset? … read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,289 satisfied customers
My van alarm has locked my ignition and does not shut off
my van alarm has locked my ignition and does not shut off when I use the key in on position and press the button solution. … read more
Don - Mo Lurch
Don - Mo Lurch
Auto Mech / Electronics
Vocational, Technical or Trade Scho
2,918 satisfied customers
I have condensation building up in my throttlebody air
I have condensation building up in my throttlebody air intake box. … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
I have a 2003 chevy tracker V6 ..it will not start in 30
I have a 2003 chevy tracker V6 ..it will not start in 30 degrees or colder weather.. but if it's above 30 degrees it starts like it's a brand new car.. what is the problem? … read more
jim
jim
Vocational, Technical or Trade Scho
702 satisfied customers
A buddy pressed the sunroof button on my truck And it caused
A buddy pressed the sunroof button on my truck And it caused extensive electrical problems with my truck … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I have a 2006 Chevy recorder HD. I have a 2006 Chevy 2500
I have a 2006 Chevy 2500 won't crank or start thought it was the fuse panel but there's a circuit dead to do really … read more
Todd Audette
Todd Audette
Automotive Technician
Vocational High School
134 satisfied customers
Having problems with my 05 Suburban with the battery being
Having problems with my 05 Suburban with the battery being dead in the mornings. Pulled the radio amplifier fuse and it was fine for a week then it started agan Dash light are staying on after key is … read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,289 satisfied customers
Sigh* ok, the battery is dead and I can't get the back hatch
sigh* ok, the battery is dead and I can't get the back hatch open to access it. PLUS there is an oven sitting back there. PLUS the windows are down and it's about to rain. I'm feeling seriously stuck … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,388 satisfied customers
MY 1997 CORVETTE WANT START AFTER I CHANGED THE STARTER N
MY 1997 CORVETTE WANT START AFTER I CHANGED THE STARTER N BATTERY N BOUGHT A NEW KEY … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
The radio is LOC. the code is 372 and 373 are the back up
the radio is LOC. the code is 372 and 373 are the back up codes. … read more
Todd Audette
Todd Audette
Automotive Technician
Vocational High School
134 satisfied customers
Manually bleeding the rear brakes on my 1999 Tahoe...No
Hey there...Manually bleeding the rear brakes on my 1999 Tahoe...No pressure at bleeders … read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
I jut got a p0727 and a p0726 codes on my 03 silverado
I jut got a p0727 and a p0726 codes on my 03 silverado duramax after ive already put in a new cranckshaft position sensor what else could it be?… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Headlights won't dim or shut off occasionally. 2014
I just got it started. The headlights stayed on and drained the battery. Earlier they wouldn't dim. They are off now, truck is running … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
On first crank up after sitting for awhile my 1993 Chevy
On first crank up after sitting for awhile my 1993 Chevy 3500 spews clouds of white smoke and runs rough. It clears up and runs smooth when it warms up. As I drive it i see streams of blue smoke but n… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
My 1994 S10 started idling & running rough about 1 month
Hi my name is***** 1994 S10 started idling & running rough about 1 month ago. It starts easily but runs rough. I can see the tach jitering on idle. In neutral it will rev. up to 3000 RPM(and higher) a… read more
rpmdiag
rpmdiag
High school
7,268 satisfied customers
I have a 2005 chevy Silverado 1500 with a 5.3l engine. after
I have a 2005 chevy Silverado 1500 with a 5.3l engine. after it sits for a period of time and I start the engine, it kicks out a big puff of blue smoke and I have been having to add oil.I don't really… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
I HAVE SLUDGE UNDER MY OIL CAP...AND MY TRAILBLAZER IS
I HAVE WHITE SLUDGE UNDER MY OIL CAP...AND MY TRAILBLAZER IS LOOSING OIL PRESSURE … read more
rpmdiag
rpmdiag
High school
7,268 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x