2005 Chevy Cobalt Key fob problems

WRE06

MEMBER
2005 CHEVROLET COBALT
4 CYL
FWD
MANUAL
65,000 MILES

A few months ago both key fobs began to work intermittently so I replaced the batteries. This did not solve the problem. Lately it has gotten so 90% of the time my key fob simply will not work then I am forced to unlock the car with the key manually, which causes the alarm to go off. I now no longer even use the key fob, I just lock my doors manually, but for some reason even with my key fob stored in my glove box, simply pushing the lock down sets the alarm? What do you think could be causing this? I pulled the fuse out for the horn so it is not quite so embarassing, since every time I get in my car everyone stares at me. Is there any way to disable the alarm? Also, my car ran for 3-4 seconds this morning then shuddered and shut off. Do you think the security system shut the fuel off? Could I argue this is a safety issue with the dealer and have them pay to repair it?
Thanks,
Wyatt Eddy

4 Replies

2CARPRO JACK

MECHANIC
11,533 POSTS

First try reprogramming the anti theft as follows
Ignition to "run" position, try to start and let key return to "run" position
Approx ten minutes security light will go off
Turn key "off" and wait 5 seconds
Repeat 2 more times for a total of 3 relearns.
Turn key off, then start it
Unfortunatly you need a scan tool to reprogram the key fobs. Sometimes like all computers they drop them and they need to be reprogrammed. If that doesnt work it could be a problem with the BCM or the Remote Control Door Lock Receiver

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Thursday, February 5th, 2009 AT 7:33 AM

WRE06

MEMBER
4 POSTS

I tried what you stated and was not able to resolve my complaint. Today I started my car and it shuddered violently while running. If I had to guess I would say it was running on 2 cylinders, or some time of reduced power mode. As the car was idling all the gauges, including the tach, showed zero as if the car was not turned on. I turned it off, and after several attempts of cranking 4-6 seconds each the car restarted. Do you have any idea what could have caused this, and is it likely to happen again?
Thanks,
Wyatt Eddy

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Wednesday, February 18th, 2009 AT 2:13 PM

2CARPRO JACK

MECHANIC
11,533 POSTS

An inoperative dash is usually a sign of a problem with the ignition switch. Couldnt say if it will or wont happen again, but if it does use a test light to see if there is power to everything in the interior fuse panel

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Wednesday, February 18th, 2009 AT 2:35 PM

DHATURA

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1 POST

I have the same problem with the alarm. Today though, it went to a new llevel. When I turn the key, all the locks start to unlock and lock over and over for a few seconds and the dash lights all light. But the car doesnt start. Just clicks like it does if the battery is too low to start.

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Tuesday, November 3rd, 2009 AT 3:40 PM