Jump to content

Air Conditioning

polarisboy

Recommended Posts

polarisboy Enthusiast

polarisboy

Posted
Posted

I have an 05 HD. When the AC is on, I can hear this chirpping noise, seems to be when the compressor cycles. DRIVES ME CRAZY!!!!!! I just went on a 1500 mile trip, and I was about ready to stop and beat it with a bat or something, it is VERY annoying. Dealer said that there is a ASI bulletin, but there is no TSB. The ASI says not to replace parts. They know they have problem, but don't know the fix. The ASI bulletin is dated 10/04. SEEMS THOUGH THEY WOULD HAVE A FIX BY NOW!! Goes along with my tether strap on my gas cap. They know they have a problem, but can't seem to get it fixed.

 

Anyway, Customer service didn't have a clue what I was talking about, and they don't have access to the ASI bulletins apparently. I'll tell you one thing, this will be fixed, or they can buy it back or get me another truck. I cannot tolerate that noise. Also, the A/C doesn't seem to cool that well either, yeah, it was hot, but at road speed, I would think it should be more than sufficient. I had to run the fan on 2 or 3 to be comfortable. WEIRD. My 00' 2500 never had ANY of the issues this 05 has got, what gives?

 

Oh well, enough ranting and raving, just wondered if anyone else had this issue.

 

THANKS!

mmmikkke Senior Enthusiast

mmmikkke

Posted
Posted
I have an 05 HD. When the AC is on, I can hear this chirpping noise, seems to be when the compressor cycles. DRIVES ME CRAZY!!!!!! I just went on a 1500 mile trip, and I was about ready to stop and beat it with a bat or something, it is VERY annoying. Dealer said that there is a ASI bulletin, but there is no TSB. The ASI says not to replace parts. They know they have problem, but don't know the fix. The ASI bulletin is dated 10/04. SEEMS THOUGH THEY WOULD HAVE A FIX BY NOW!!  Goes along with my tether strap on my gas cap. They know they have a problem, but can't seem to get it fixed.

 

Anyway, Customer service didn't have a clue what I was talking about, and they don't have access to the ASI bulletins apparently. I'll tell you one thing, this will be fixed, or they can buy it back or get me another truck. I cannot tolerate that noise. Also, the A/C doesn't seem to cool that well either, yeah, it was hot, but at road speed, I would think it should be more than sufficient. I had to run the fan on 2 or 3 to be comfortable. WEIRD.  My 00' 2500 never had ANY of the issues this 05 has got, what gives?

 

Oh well, enough ranting and raving, just wondered if anyone else had this issue.

 

THANKS!

 

 

 

I have a 05 2500HD Ext. Cab 6.0L built probably around 10/04. AC has no problem keeping it cool--even cold--inside driving in 95 degree heat with full sun. And my truck's charcoal gray, much darker (and more heat absorbing) than yours.

 

Sliders on full cool, fan on 2. No chirping either. Sounds like it's working just as well as your '00.

 

You should replace the belt and see if it fixes the problem.

 

Could your truck have sat on the lot for multiple months? I think I read somewhere about the lubricant settling out of the refrigerant in trucks sitting on the lot, and there was a procedure for reactivating the AC, might have been a TSB. If that happened and your dealer just fired it up and gave it to you (without following the procedure), it might have damaged something in the AC compressor or evaporator, causing higher pressures and more drag on the belt, causing the chirp.

Wardster Enthusiast

Wardster

Posted
Posted

I have an '03 doing the same thing. I had the hood open and noticed the cluth on the compressor was making the noise (this after I paid $100+ for a new belt). I have to drop it off again tonight since the delaer could not get it to duplicate the problem when I had it in there last.

 

Yesterday the A/C did not work very well, so I think the problem might be easier to diagnose.

 

What is the ASI bulliten?

 

-Wardster

polarisboy Enthusiast

polarisboy

Posted
  • Author
Posted

Thanks for the responses guys. The ASI is Advance Service Information. The bulletin number is 1554238. Dated Oct. 8th, 2004.

 

The first sentence is funny! "High Pitched Tone Heard Inside Vehicle When A/C Compressor is Engaged (Fix Not Available Yet)" d**n Nice!!!

 

Further down it states: "DO NOT replace any air conditiong system components. Replacing components will not correct this condition. The noise is not an indication of an A/C system failure".

 

It affects 03-05 Caddy's, Avalanche, Silverado, Suburban, Tahoe, GMC's and H2's.

Sure is funny how it affects so many vehicles and there isn't a fix yet. Again, my point about GM. It must be a small percentage, or there would probably be a fix by now. I stopped by the dealer again today, they made an RO and will call technical assistance, but they didn't think anything would come of it. WE"LL SEE.

 

As for setting around, it was made in 9/04 and I bought it in 12/04. Don't know if that is long enough or not, but thanks for the tip anyway!

 

I'll keep you guys updated, and thanks again.

Superman TNT Enthusiast

Superman TNT

Posted
Posted

I bought an 04 2500HD in 2/05 and because I live in Vermont (not exactly a hot climate) I didn't use the AC until recently. I don't have any noise but there is a very nasty smell that comes out of the AC when I turn it on. Has anyone experienced that? Cure?

 

Thanks,

 

Tom

dewfpo Senior Enthusiast

dewfpo

Posted
Posted

It's called mildew and for some reason it is fairly common on there R134a systems. Never had the problem before with the R-12 systems.

 

You can buy over the counter fungicides that you spray in to kill it, you can also make sure the evaporator drain is not plugged.

 

You can keep it from happening by turning off the compressor a mile or so from your destination and let the fan run to dry out the evap. Then it shouldn't smell on next use.

 

DEWFPO

polarisboy Enthusiast

polarisboy

Posted
  • Author
Posted

Well, I took my truck to the dealer, they confirmed my "annoying" noise. I talked with Customer Service after that. They informed that the bulletin I mentioned is basically it. There is no fix for it at this time. There MIGHT be a fix at the end of summer or early fall. I won't go in to the whole conversation here, but looks like they are going to get me another truck that doesn't make noise, seeing they dont' have a fix for mine yet. I'll keep you guys updated. Of all the guys I know that have 04-05 trucks, none of theirs have this noise. Figures, why me?? :seeya:

curly Enthusiast

curly

Posted
Posted
Goes along with my tether strap on my gas cap. They know they have a problem, but can't seem to get it fixed.THANKS!

 

 

 

 

I was beginning to think I was the only one to be annoyed by this. :seeya: Have you approached a delaer about this problem? I know my '03 1500 didn't have this problem :chevy: . It's the little things like this that really annoy me about vehicles. Hope the fix for your chirping comes quickly!!

gtimark New Member

gtimark

Posted
Posted

Now that you mention it, my 1-month old '05 2500 HD 4x4 also has a very annoying whine/chirping sound coming from the AC. It's worst on the passenger side though. It's weird, because otherwise the AC words really well. Thanks for the info. At least I know I'm not the only one either.

 

Any of you guys have problems with the seat back cushions making strange crunching sounds when you lean back or simply move around to get comfortable?? That's another little annoyance in my otherwise great truck. Aside from that, the truck is rock solid. An improvement over my Toyota Tacoma.

 

Mark

polarisboy Enthusiast

polarisboy

Posted
  • Author
Posted
Goes along with my tether strap on my gas cap. They know they have a problem, but can't seem to get it fixed.THANKS!

 

 

 

 

I was beginning to think I was the only one to be annoyed by this. :thumbs: Have you approached a delaer about this problem? I know my '03 1500 didn't have this problem :loser: . It's the little things like this that really annoy me about vehicles. Hope the fix for your chirping comes quickly!!

 

 

 

 

 

 

Yes, I have approached the dealer and Customer service on the gas cap strap. They had a bulletin out on the 04's stating that the problem would be corrected by the 05 model year. Guess what, it hasn't happened yet.

 

Will hear from GM next Wed on the Chirrping thing. It really drives me crazy. Hope they take care of me.

2004GMC2500HD Enthusiast

2004GMC2500HD

Posted
Posted

My A/C doesn't make any noise and can send you into hypothermia real quick if you are careful.

 

But its funny you mentioned the seat back cushion. My truck does it and my 2002 Cadillac Escalade did the exact same thing. They both only seemed to do it once when you first sat down and moved a little to get comfortable, but wouldn't do it again until you got out and back in again.

 

I have a question about the gas cap problem? What is it? My gas cap and strap don't cause me any problems at all.

Frozen001 Enthusiast

Frozen001

Posted
Posted
I have a question about the gas cap problem? What is it? My gas cap and strap don't cause me any problems at all.

 

 

 

 

I would also like to know about this problem??? Mine seems fine....

 

Also someone mentioned the drain on the evaporator on the AC... where is this located?? I also get that mildew smell, and I would like to check the drain.

 

Thanks

 

Lou

sxmax Enthusiast

sxmax

Posted
Posted

Easy way to check the drain is to just look for a puddle of water when you come to stop after running your A/C. No puddle or very small puddle drain is more than likely plugged. Normal to big size puddle drain is working normally.

dewfpo Senior Enthusiast

dewfpo

Posted
Posted
Easy way to check the drain is to just look for a puddle of water when you come to stop after running your A/C.  No puddle or very small puddle drain is more than likely plugged.  Normal to big size puddle drain is working normally.

 

 

 

 

 

Only if you live in a humid climate..... In a dry climate like most of the west, there will be no dripping coming from the A/C evaporator.

 

DEWFPO

ToBNamedL8r Enthusiast

ToBNamedL8r

Posted
Posted
Easy way to check the drain is to just look for a puddle of water when you come to stop after running your A/C.  No puddle or very small puddle drain is more than likely plugged.  Normal to big size puddle drain is working normally.

 

 

 

 

If you live in Illinois this summer it will be about the size of Lake Michigan (roughly speaking) :cheers:

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • fondupot
      Exhaust heat while towing!

      By fondupot · Posted

      You can install tailpipes that direct the exhaust sideways vs the OEM one that goes straight back. There are several on the market, do you own research. HOWEVER, you need to make sure the Venturi vents are still intact, otherwise it will throw a engine code. There is a sensor somewhere that detects back pressure on the exhaust. And if it doesn't collect the correct metrics, it will throw the truck into limp mode. 
    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      "Teardown" is complete. Head surfaces are clean and ready, new intake is prepped and ready. Coolant drained and water pump is removed, radiator is removed, new hoses and pump are ready.   The replacement intake is also from a '95 (with I think 260k, the odometer said). Noticeably less pitting where it covers the rear coolant passages. I'm not sure if that's a tribute to more frequent use, more frequent coolant changes/upkeep, or if the intake was machined at some point. But it appears I found a good one.   My coolant hoses were original, and the lower hose still retained the factory spring inside. It's not really rusty, but it's got deposits all over it. Unsure if I should re-install it (will thoroughly clean it first). Someone said hose technology has gotten better since 1995 (has it?) and I don't need the spring. I think modern EPDM is what made those hoses last from 1995-2026, so it's a question of how much suction can the water pump really pull, and will it collapse the hose without a spring?   I'm stopped and waiting for parts, however.   When I first brought the truck home, the fan was intermittently hitting the radiator shroud. I could see someone had monkeyed with the shroud (put a bunch of cardboard as a spacer between the upper/lower shroud halves. Someone said the motor mounts have likely failed and the engine has sagged. I wasn't sure I believed that. The engine is really solid in its mounts: To remove the old intake I *just* nearly permanently welded to the heads with freshly cured RTV and gasket snot two weeks ago, I literally had to use the arms on my lift and a chain with a bolt attached to the intake to pull it loose. It almost picked the front of the truck off the ground before ....scuuuuuuuuuuup.... I could actually hear the gaskets tearing and it broke loose and the whole truck settled back down. Motor barely moved.   SO, those parts I'm waiting on... The lower radiator mounts/bushings had completely failed. The radiator needs to be insulated from the rad support, and the bushings help the rad stand at the correct height. The plastic "baffle" was also destroyed at some point. Someone had attached the shroud to it incorrectly, overlapping a joint that should have been underlapped, creating another suspect issue potentially causing things to hit the fan. Broken tabs, side is busted off, and it's perma-formed/bent where it was jimmied incorrectly.   The baffle? Unobtainum. Long since discontinued from GM, of course. Aftermarket/capa/chinese? Also unobtanium. In GM's infinite wisdom, it appears there are at least two different variations whether the Blazer is 2 or 4 door, and I can't yet tell if they shared the same part with the S-pickups. Plan B, if I can't find a viable used one, will be to create a bracket to re-assemble the critical joint I need to seal a gap with the shroud. But that will bug me, it won't be...perfect.   The water pump bolts appear to have been installed with...plumber's putty. I guess, sure, if it works...? I've found a few "backyard fixes" like that. Someone's been here before....   If I can't find someone to jam bamboo under my fingernails to fill my free time this week I think I'll install the driver's power window motor and replace the rear door speaker that's inop. I've got a genuine GM "9.5" ohm working replacement. Why GM used a non-standard resistance....nevermind. Of course they did, you can get more sound from a cheap factory amp that way.   And the saga goes on...
    • glenn27
      Different requirements for oil filters?

      By glenn27 · Posted

      // Thank you, also for your  response. More information is always good. This 2013 GMC is most likely my 'forever truck"-I'm 77 and retired...and truck only has 42K on it-very clean-so I try to keep it that way.  Tks again for your  response- glenn
    • smooth68
      Alternate wiring for Kicker sub with Bose system. (DO THIS)

      By smooth68 · Posted

      I started my install this weekend. Everything was pretty straight forward but I ran into one issue with running power through the firewall. The nipple grommet on my High Country already has a small harness running through it - has anyone else ran into this issue? And on the engine bay side, does the wire basically just penetrate the factory wiring boot? I did this on my '22 Trail Boss and it seems much easier but thats been a few years. My other thought would be possibly drilling a new hole adding a rubber grommet just to the lower left of the factory hole. Thoughts?   Has anyone used a T-harness off the Bose amp and obtained power from there? It seems a little odd that such a small amp needs 3 power leads
    • glenn27
      Different requirements for oil filters?

      By glenn27 · Posted

      ///// Ok--Thanks for that info--I could not find yesterday when I looked for the specs on that NAPA filter what I wanted. Their website is not very user friendly. I buy all teh filters for  our three vehicles once or twice a year. Have always run NAPA Gold on everything I own....I buy it thru my Son's account for his business-which he has a Heavy Equipment repair shop-one reason he uses NAPA so much-they have such a full line of coverage for just about anything/anywhere- He gets s  good discount because of volume bought. Anyway-Thank you -Sir for your response.   glenn

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...