Question about Oldsmobile Bravada

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My vehicle has gm factory alarm system.it has been going off for now reason and it will not crank over to start .i disconected the positive battery cable to try and reset it , it worked for three days and went back to the same problem. i know it has a transponder key .can i diconnect the system or does it need to be reprogramed. any input would be helpfull

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Although it sounds like a problem with the alarm, but since you can not turn the car over it sounds like a dead cell in the battery. If the alarm was the problem it would shut off the fuel or the spark for the plugs and the engine would just turn over and not start. I would try a different battery. Sometimes the battery will play games and mess with the alarm.

Posted on Mar 13, 2011

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How do i find out if vehicle has remote start feature ? all functions on key fob work except engine crank even park lights flash indicating remote start feature . maybe a fuse blown or not in place.


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Jan 14, 2016 | Cars & Trucks

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Why wont my alarm reset in my 1998 chevy blazer the security system is killing the fuel and i cant get it to run it starts and dies imeaditly


I don't think the anti-theft is the problem.
On GM vehicles, the anti-theft system will not allow the engine to crank, or get fuel or spark. If it cranks, you have a different problem.

Nov 16, 2015 | Cars & Trucks

1 Answer

Changed battery car won't start 2002 highlander


what made you change the battery from the get go? does your car even crank? are you sure you installed the battery correctly, positive cable to positive post and negative cable to negative post. assuming you installed the battery correctly and your car does not start but does crank it may be a fuel or ignition issue. if your vehicle does not even crank you may have a starter issue or no starter signal from the ignition switch to the starter. lastly and highly unlikely is the vehicle factory immobilizer system may have a failure and is not allowing the vehicle to start.

Aug 29, 2014 | 2002 Toyota Highlander

1 Answer

I have a 1996 3.8 liter camaro. I was driving my car down the road when the gages started jumping and i found out that problem it was the battery and aldernater well after i changed them problems i have...


Hmmm, a puzzle.

The only way to disarm these alarms is with
the factory remote or turning on the ignition.
To turn off the factory alarm.

Ok, do you have the remotes?
If so, let's ID the system.
Go to www.KEYLESSRIDE.com & use th fcc #s
on the back of it.

If not try this:

Programming Factory Security on GM Cars and Trucks
Instructions for programming the GM factory security systems that do NOT
disarm from the driver's door key cylinder. This programming is for the
cars and trucks listed below.

96+ Camaro
96+ Firebird
99+ GM Trucks
99+ GM Sport Utility Vehicles

Step #1 Turn the ignition on then off.

Step #2 Remove the radio fuse only (not the fuse that says acc/radio).

Step #3 Turn the key to the accessory position. When you do this you
will get two chirps from the door buzzer. Should you hear only
one chirp, your vehicle does not have factory security and these
instructions do not apply. You need to hear two chirps.

Step #4 Press the unlock switch on the door. This will give 1-4 chirps
depending on the program step. Continue pressing the unlock
switch until you get to the desired chirp setting.
1 Chirp - Security off
2 Chirps - Remote Only
3 Chirps - Factory Setting
4 Chirps - Passive Arming

Step #5 Turn the ignition off.

Step #6 Put radio fuse back in.

Jul 03, 2011 | 1996 Chevrolet Camaro

3 Answers

I need to disable my alarm on a 1997 bmw 528i.


Now im not sure since the manual says your model has the same alarm system as the 328i and on the 328i you can remove the module to disable by doing the following. you can unplug the control module. It is located under the glove box. Climb under the dash on the passenger side and remove a few screws on the trim panel under the glove box. Theres a black control module with a green connector. There should be a lock tab on the connector. press the lock tab and pull out the connector. The alarm should now be disabled. But if it has the special transponder key this may not work.
But if the only reason you want to disable it is because of the motion sensor setting of the alarm for no reason there is a solution for this. To disable the motion sensor, hit the lock button to arm, then hit lock button again within four seconds to disable motion sensor. Red light on rearview mirror should flash four times, then pause, then start flashing on regular intervals. this is most likely the reason if your having the issue where the alarm goes off every 20 minutes.
If you want to completely remove it below is a wiring diagram taken from the manual for you alarm system.
this is from the manual its the alarm wiring diagram.
Battery Constant 12v Positive Wire ( ): Red/White or RedBattery Constant 12v Positive Wire Location: Ignition Switch Harness
Starter Positive Wire ( ): Black/Yellow or Black
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire ( ): Green
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire ( ): Purple/White or Purple
Second Ignition Positive Wire Location: Ignition Switch Harness
Parking Light Positive Wire ( ): Gray/Purple and Gray/Yellow. Use Both Wires. This vehicle has a dual parking light system that will require 2 extra relays.
Parking Light Positive Wire Location: At Headlight Switch
Power Door Lock Positive Wire ( ): White/Red
Power Door Lock Positive Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Power Door Unlock Positive Wire ( ): Blue/Red
Power Door Unlock Positive Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Door Trigger Negative Wire (-): Brown/Gray
Door Trigger Negative Wire Location: At Factory Alarm Plug. The alarm plug is a black 12 pin plug located just behind the glove box.
Domelight Supervision Wire: Turns On With Unlock
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Brown/Red or Brown/Yellow
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Black
Tachometer Wire Negative Wire Location: At Instrument Cluster
Brake Light Positive Wire ( ): Blue/Red or Green/Red
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): Disarms With Factory Remote Only. Factory Alarm Disarm Wire Location: N/A
Factory Anti-Theft System: Transponder Anti-Theft System, Requires Bypass And Extra Ignition Key. The 1997 model year vehicle may require a bypass module and an extra ignition key, if vehicle is equipped with a special key from BMW.
Factory Anti-Theft System Location: Transponder At Ignition Switch Tumbler
if you require further assistance please let me know and i will help assist you from there. Thanks, Midwest-Tek

Aug 27, 2010 | 1997 BMW 328

2 Answers

2002 chevy tahoe ,vehicle has factory alarm with keyless entry, battery and starter were checked. and are in good working order,this vehicle does not want to crank over .the starter relay just clicks, this...


Check the battery cables, both positive and negative. Not just on the battery end, but at the starter, and the engine block. The cable could have a bad spot along its length that may or may not be visible. The best troubleshooting step is to replace them.

Aug 02, 2010 | 2002 Chevrolet Tahoe

1 Answer

Car wont start, changed ecm, plugs, started but died, what should i do


After you put in the ecu, do the crank relearn, and you're good to go.
Ensure that your battery is fully charged before attempting the relearn procedure. Do not leave any battery charger or jumper cables attached to the battery. Close the hood completely. Some applications require that the doors remain closed during the procedure.
96-99 GM
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start).
Allow the key to return to the all position (same as if the vehicle would have started). The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
2. When the theft system telltale stops flashing (or turns oft) turn the key to the off position for 5 seconds and then attempt tostart the vehicle. The vehicle should start on this cycle.
3. Once the vehicle is running, the password relearn is complete.

00 + GM
1. Rotate the key to the start position to attempt to start the vehicle (the vehicle will not start). Allow the key to return to the on position. (same as if the vehicle would have started)
2. The theft system light will flash (or stay lit) on the dash for approximately 10 minutes.
3. When the theft system telltale stops flashing (or turns off) turn the key to the off position for 5 seconds and then attempt to start the vehicle.
4. Repeat steps 1 through 3 two more times for a total of 3 cycles/30 minutes.
5. On the next cycle of turning the ignition key from off to crank the vehicle should start
6. Once the vehicle is running, the password is learned and this completes the cycle.
7. Clear any DTC's with a scan tool if necessary. DTC history will be cleared after 100 ignition cycles.

Thank you for using fixya and keep us posted


Jun 12, 2010 | 1999 Chevrolet Tahoe

2 Answers

This alarm goes off and cannot get it to shut off unless i unhook the positive cable of the battery. I am at wits end here i am going to altogether remove this system from my vehicle.


your alarm has a fuse or fallow the posative wire from the modulator the red wire and disconect that from the battery. option 2 call the alarm manufacture

Jun 02, 2009 | 1994 Chrysler LHS

1 Answer

Cannot start engine after alarm sounded.


disconect the battery for about 15 minutes and turn the head lights on after bat is disconected and then turn head lights off reconect bat and this should reset your alarm system.

Apr 21, 2009 | 2002 Toyota Tacoma

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