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I have a 2002 tahoe took it in for a flasher problem and a gas leak the guy fixed it but it went into theft mood now wont start

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  • Cars & Trucks Master
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Call that 1-800 # at GM in your owners manual. They might can reset The anti-theft through On-Star or GPS.

Posted on May 17, 2017

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Have a 2002 tahoe with a gas leak and a problem with the flashers took for repair fixed but went into theft mode and wont start how can it be started


you can try this ,Try and do 30 Minute Learn Procedure
Turn ON the ignition, with the engine OFF.
Attempt to start the engine, and then release the key to ON, vehicle will not start.
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF ignition, and wait 5 seconds.
Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes, the vehicle is now ready to relearn the Passlock? Sensor Data Code and/or Passwords on the next ignition switch transition from OFF to CRANK.
IMPORTANT: The vehicle learn the Passlock? Sensor Data Code and/or Password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
Start the engine. The vehicle has now learned the Passlock? Sensor Data Code and/or password.
With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.

May 17, 2017 | Cars & Trucks

2 Answers

What would cause a 2002 Tahoe to die when you let off the throttle?


1) Bad/clogged Idle Air Control (IAC) especially if you have a oil and gauss air filter.
2) Air leak in the duct between the air filter and Throttle body.
3) Bad or clogged Mass Airflow Sensor (MAF).
4) Bad Throttle Position Sensor (TPS).
If no throttle cable the throttle body assembly..

Sep 30, 2014 | 2002 Chevrolet Tahoe

1 Answer

1989 TLC Gas engine...wont start


Check to ensure fuel pump fuse hasn't burned out. Try spraying starting fluid directly into the throttle body to see if it tries to catch.

Nov 16, 2013 | 1989 Toyota Land Cruiser

1 Answer

Have a 2004 kia sorento, can start and run for like 5 mins then just shuts down. All the lights, radio, heater/ac all work strong. Car won't start afterwards. Any suggestions?


I have a 1997 buick lesabre, and it wont start. I took it to a guy who said that it was the fuel pump. well he changed that but it back fired a couple of times and then it stopped and wont start again. It's just turning over now. well then I found out that the gas I put in it may have had water in it, when the guy went under the hood and pushed out some "gas" it was water it had no smell. so we put some rubbing acohol in it to burn out the water. now it still wont start. I need help, dont know what to do at this point. PLEASE HELP SOMEONE!!!!

Sep 29, 2013 | Cars & Trucks

1 Answer

1999 PONTIAC BONNEVILLE SE wont start security lights come on windows wont work, had it happen once b4 thought was out of gas put gas in still same waited an hour started right up, never had prob again...


Had the same problem. Took it to local guy and he put it on the computer and found the wire running underneath the driver side floor mat had gone bad. Had to do with the security shut-off, which this wire affected. Replaced that wire, and the car has been running great ever since - happened 19 months ago.

Mar 07, 2011 | 1999 Pontiac Bonneville

1 Answer

My car won't start have replaced pcm, bcm, fuel pump, fuel pressure regulator, passlock system, emergency flasher, when I turn on the turn signals the emergency flasher buzzes, and it quits running, and...


THE DEALERSHIP HAS TO REPLACE PCM.BECAUSE THE PCM HAS TO REPROGRAM BEFORE CAR WILL CRANK.YOUR CRANKSHAFT SENSOR AND THEFT SECURITY SYSTEM HAS TO BE REPROGRAM THATS WHY CAR WONT CRANK.

Jul 13, 2010 | 2002 Pontiac Grand Am

2 Answers

Ok. my car 97 pontiac sunfire needed a new alternator output cable. guy put a new one on but apparently messed with something else and now its not starting. said the theft light came on and that it isnt...


Tell the guy to call the dealer and ask them how to override the anti theft system or reset it. when you disconnect the battery and lose power it kicks on the anti theft device and it won't get fire.

Nov 26, 2009 | 1997 Pontiac Sunfire

1 Answer

2002 Chevy Tahoe sputters and stalls out while driving.....


Fuel filter. Timing/timing chain. Idle air control valve. Idle sensor. Vacuum leak. Probably one of the above, but the filter is cheapest place to start. Change your air filter too, if you haven't for a while.

Sep 12, 2009 | 2002 Chevrolet Tahoe

2 Answers

AC Blowing Warm Air


the refrigerant gas is not enough . need recharging.

Jun 16, 2009 | 2002 Chevrolet Tahoe

4 Answers

Chevy tahoe shuts off when driving


replace fuel pump relay. check all fuses to ignition and pcm .make sure they are not loose. check coil wires make sure they not loose.look at battery if you have the ac delco seal battery make sure green eye still there .if its black have battery check out.

Apr 29, 2009 | 2002 Chevrolet Tahoe

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