Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy

How to bypass security system on 1998 chevy pickup

Customer Question
I transfered 98 chevy cab...
I transfered 98 chevy cab onto a 98 GMC running gear. starts for 3 seconds then dies. security light stays on. let set for 10 minutes then shut key off then started. NO LUCK, didn't work. NO TROUBLE CODES FOUND, using OBD-II.
Submitted: 10 years ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 39 minutes by:
9/5/2007
Chevy Mechanic: Davo, Master technician replied 10 years ago
Davo
Davo, Master technician
Category: Chevy
Satisfied Customers: 3,253
Experience: ASE Master Technician also L1 Advanced Engine Performance Specialist
Verified
Did you use the theft module and PCM from the donor cab?
Ask Your Own Chevy Question
Customer reply replied 10 years ago
My 98 GMC I started with is trashed but it was a base model. No extra's. No security system, vinel flooring, floor 4X4 shifter, ect. My chevy has electric 4X4, center overhead console. everything my otherone didn't. All I used that is different is the cab. 98 GMC motor, tranny, computer everything is gmc andI drove it to my buddies shop, transfered cab's and then it starts for 3 seconds then dies.
Chevy Mechanic: Davo, Master technician replied 10 years ago
Disconnect the battery for 3 minutes and hold the cables together.Reconnect the battery and then do the following.
  • Momentarily rotate the ignition key to the CRANK position (Do NOT start the vehicle), then release it to the RUN position (Do NOT key OFF in the process).
  • Wait 10 minutes. Observe the SECURITY indicator. Refer to the following list for the appropriate responses:
    - If the passlockTM sensor was replaced the SECURITY indicator will flash for the 10 minutes duration.
    - If the EVO/passlockTM module was replaced, the SECURITY indicator will flash for a few seconds and then remain ON for the remainder of the 10 minutes duration.
    - If the VCM/PCM was replaced with a new programmed VCM/PCM and connected to the vehicle for the first time, the vehicle will start and this procedure may not be necessary.
    - If the replacement VCM/PCM was connected to any vehicle at any other time, even momentarily, the SECURITY indicator will flash for a few seconds and then remain ON for the 10 minutes duration.
  • The SECURITY indicator will transition from flashing to ON briefly to OFF after 10 minutes if remaining in the ignition ON position.
  • Turn the ignition switch to the OFF position and wait for 10 seconds.
  • Repeat steps 3-6 two more times. The new security code is ready to be communicated among the Passlock sensor, EVO/Passlock module and VCM/PCM. The new password XXXXX XXXXX on the next ignition lock cylinder cycle from OFF to CRANK to ON (start attempt).
  • Ask Your Own Chevy Question
    Customer reply replied 10 years ago
    So you have to disconnect the battery 3 times total?
    Chevy Mechanic: Davo, Master technician replied 10 years ago

    No just do it once.

     

    Ask Your Own Chevy Question
    Customer reply replied 10 years ago
    No luck still just starts for a second and the dies. I tried it about 3 times, all alittle different ways.
    Ask Davo Your Own Question
    Davo
    Davo
    Davo, Master technician
    Category: Chevy
    Satisfied Customers: 3,253
    3,253 Satisfied Customers
    Experience: ASE Master Technician also L1 Advanced Engine Performance Specialist

    Davo 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
    Shortly after having the AIRBAG recall at a Chev dealer tyhe
    Shortly after having the AIRBAG recall at a Chev dealer tyhe 'SERVICE AIRBAG' light bappeared. Any clue to why? … read more
    Lou P. master tech
    Lou P. master tech
    Mercedes Benz master tech
    Bachelor's Degree
    649 satisfied customers
    Engine surges and sometimes stalls with A/C, defrost, and
    Engine surges and sometimes stalls with A/C, defrost, and heat on and then occasionally with all of them off. Replaced all 3 of the idle and position sensors on the throttle body already. … read more
    Jared D
    Jared D
    Shop Supervisor
    Bachelor\u0027s
    3 satisfied customers
    There is a humming noise comming out of alternator in key no
    There is a humming noise comming out of alternator in key no position pull the one wire plug and stops, also reading close to 12 volt coming out of it in just key on position, olny reason notice it is… read more
    Randall
    Randall
    Auto Technician / Consultant
    Vocational, Technical or Trade Scho
    69 satisfied customers
    Man i need a quick answer does the abs modular valve on 2003
    Hey man i need a quick answer does the abs modular valve on 2003 s10 zr2 have bleeder screws on the side… read more
    kalamykid
    kalamykid
    Pactor automotive
    Vocational, Technical or Trade Scho
    97 satisfied customers
    My dashboard lights are always dim, even in bright light.
    My dashboard lights are always dim, even in bright light. … read more
    Chris (aka - Moose)
    Chris (aka - Moose)
    Vocational, Technical or Trade Scho
    108 satisfied customers
    Yesterday my dash said "engine hot, A/C off", now today the
    yesterday my dash said "engine hot, A/C off", now today the check engine light came on. The fluids are fine, nothing is overheating, but the temp gauge won't move from cool even though I'm getting hea… read more
    fordguy4u
    fordguy4u
    Automotive Tech
    Vocational, Technical or Trade Scho
    70 satisfied customers
    I have to codes po171 and po174 pops up...when i clear the
    I have to codes po171 and po174 pops up...when i clear the codes I can drive hundreds of miles...then I shut engine off...restart engine, drive 100 ft and the check engine lite pops on with same codes… read more
    GM Tech (Cam)
    GM Tech (Cam)
    Chevy Technician
    Vocational, Technical or Trade Scho
    15,289 satisfied customers
    My 99 k3500 manual shift when put in 4wheei it is not
    my 99 k3500 manual shift when put in 4wheei it is not pushing the ball on switch in all the way to make … read more
    Gary
    Gary
    Chevy Technician
    Vocational, Technical or Trade Scho
    9,357 satisfied customers
    Have a 2011 2500 here that will not unlimet the speed due to
    Have a 2011 2500 here that will not unlimet the speed due to a Reductant issue, ruductant heater has been replaced and all tests done and no dtc codes showing, however still speed limited, vin is 1GC1… read more
    GM Tech (Cam)
    GM Tech (Cam)
    Chevy Technician
    Vocational, Technical or Trade Scho
    15,289 satisfied customers
    One side of the engine is missing. I you disconnect one
    One side of the engine is missing. I you disconnect one cylinder on the other side the other seven cylinder start firing. when you reconnect it the other complete side starts missing again. Please hel… read more
    Todd Audette
    Todd Audette
    Automotive Technician
    Vocational High School
    138 satisfied customers
    2002 Chevy Cavalier can't get the engine to shut off. Need
    2002 Chevy Cavalier can't get the engine to shut off. Need to get it to stop … read more
    Randall
    Randall
    Auto Technician / Consultant
    Vocational, Technical or Trade Scho
    69 satisfied customers
    2007 avalanche 4x4 5.3 vortex burns oil setting off many
    2007 avalanche 4x4 5.3 vortex burns oil setting off many dish lights … read more
    GM Bob
    GM Bob
    Automobile Technician
    High School or GED
    1,003 satisfied customers
    I have same prob I have a 2006 Chevy Silverado 1500 dat
    I have same prob I have a 2006 Chevy Silverado 1500 dat keeps over heating I change the Thermostat n refill it but still over heating water pump not leaking fans work Radiator clean could it be air po… read more
    roy
    roy
    Associate Degree
    3 satisfied customers
    My crankshaft position sensor keeps failing. I have replaced
    My crankshaft position sensor keeps failing. I have replaced it 4 times now, and just recently replaced the wiring to it. … read more
    GM Tech (Cam)
    GM Tech (Cam)
    Chevy Technician
    Vocational, Technical or Trade Scho
    15,289 satisfied customers
    Fuel fills very slowly. Gas consumption good and starts
    fuel fills very slowly JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual? Customer: gas consumption good and starts good JA: What is the make/model/year of your car? Cu… read more
    Gary
    Gary
    Chevy Technician
    Vocational, Technical or Trade Scho
    9,357 satisfied customers
    1994 Chevrolet Truck, 5.7L, just started backfiring through
    1994 Chevrolet Truck, 5.7L, just started backfiring through the TB tonight on the way home randomly when I would give it gas or was traveling at highway speeds. Recently it has had trouble starting, e… read more
    roy
    roy
    Associate Degree
    3 satisfied customers
    Installing aftermarket Pioneer double din stereo in 2006
    Installing aftermarket Pioneer double din stereo in 2006 Chevy Silverado. Using a Axxess Steering Wheel Control ASWC-1. Followed installations instructions to a tee. Or at least I thought I did. Have … read more
    GM Tech (Cam)
    GM Tech (Cam)
    Chevy Technician
    Vocational, Technical or Trade Scho
    15,289 satisfied customers
    Have problem with a 2001 chevy s10, yes i am fixing myself
    yes i am fixing myself it has a ignition no crank problem … read more
    AMEDEE
    AMEDEE
    AUTOMOTIVE TECHNICIAN
    Vocational, Technical or Trade Scho
    9,105 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