when its warm out or i hit the button multiple times in a short period of time, my door locks stop working.

Asked by Dec 03, 2011 at 07:43 PM about the GMC Sierra Classic 2500

Question type: Maintenance & Repair

4 Answers

2,865

Which button... The button on the key fob? The button on the driver's door? Whenever which button you mean stops locking or unlocking the door, since either lock or unlock are separate functions on the switch *and* the key fob you need to be more specific on exactly what quits working. If you're talking about the key fob, see if the door switch will work. If it does, then the problem is in your key fob (probably a weak battery). If the door switch stops working on the driver's side, but the key fob will still work or the passenger door lock switch still works, then the problem is on the driver's side switch. If the problem occurs on every switch, then find out which door is the one that's not working and your problem is probably the lock actuator on that door. I have a feeling you're talking about the key fob, and I would recommend opening it up and replacing the battery (if possible--some are not serviceable) or replace the unit itself (it will need to be programmed to the vehicle and you'll have to call your dealer to find out how they do that).

sorry. I both the door lock button and the key fob button for lock and unlock. I have replaced the fob battery and my truck battery but no luck. I thought maybe Actuators? but it seemed strange that bot would go out at the same time. Also my A.C. Only blows warm air and it wont take any of the recharge i tried to give it.

1,525

A/C need to put a pressure gauge set on it, see what it is doing. If there is not enough pressure in the system (leak) then the compressor will not engage. If there is good pressure, may have a bad switch or pressure sensor that engages the compressor. Also could be compressor clutch is bad, easy enough to test with a voltmeter at the connection on the compressor. Be careful testing with the engine running, you don't want to get tangled in the fan blade or belts. Should have voltage at the connection on the compressor, when engine running, A/C on cold, fan on. If compressor is cycling on and off, if you have too much Freon in system it'll freeze up, then only blow warm air. That's why it is wise to use a manifold gauge set, see what your pressure are. They vary depending on type of Freon you use, which depends on the year of your truck. Should be marked on there, most likely R-134a, or if an older one, R-12.

Tengo una 1999GMC SIERRA CLASSIC 2500 ME FALLO EL PERIMETRO Y NO KIERE CORRER FURTE KE DEVO CHEQUEAR EN ESE CASO.GRACIAS

Your Answer:

Looking for a Used Sierra Classic 2500 in your area?

CarGurus has 3 nationwide Sierra Classic 2500 listings and the tools to find you a great deal.

ZIP:

GMC Sierra Classic 2500 Experts

  • #1
    tenspeed
    Reputation
    10
  • #1
    jamnblues
    Reputation
    10
View All

Related Models For Sale

Used GMC Sierra 2500HD
158 Great Deals out of 17,885 listings starting at $2,999
Used GMC Sierra 1500
807 Great Deals out of 60,793 listings starting at $1,500
Used Chevrolet Silverado 2500HD
350 Great Deals out of 29,396 listings starting at $2,795
Used GMC Sierra 2500
3 Great Deals out of 108 listings starting at $5,999
Used Ford F-150
2,319 Great Deals out of 189,659 listings starting at $1,300
Used GMC Sierra 2500HD Classic
8 Great Deals out of 153 listings starting at $5,000
Used GMC Sierra 3500
6 Great Deals out of 230 listings starting at $5,988
Used GMC Sierra 3500HD
65 Great Deals out of 5,970 listings starting at $10,995
Used Chevrolet Silverado 1500
1,765 Great Deals out of 155,976 listings starting at $1,700
Used Dodge Ram 1500
328 Great Deals out of 9,339 listings starting at $1,500
Used Chevrolet Silverado 1500HD
15 Great Deals out of 252 listings starting at $2,400
Used GMC Sierra 1500HD
6 Great Deals out of 102 listings starting at $3,900
Used Ford F-250 Super Duty
456 Great Deals out of 38,177 listings starting at $1,999
Used Ford F-250
393 listings starting at $3,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.