Last post on Nov 17, 2013 at 7:32 PM
You are in the Chevrolet Suburban & Tahoe
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Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV
#255 of 762 Re: Z-71 a/c compressor problem [fireoo7]
Sep 05, 2006 (10:04 am)
I am having a similiar problem with my 2001 Chevy Tahoe, 60,000 miles, As the first published problem. At 2000 RPM or so a grinding noise comes from my engin compartment that seemes to be from a pump associated with the A.C. unit. When I turned off the AC unit the and drove the vehicle there was no noise. I brought to the local dealer and they have said the the compressor is trying to sieze up and the repair/replacement would be A WHOOPING $1700. becuase of my rear a/c. They said something like the lines need to flushed because of metal scrapes. What. If this is just a tension or spring issue that would save me a lot of money. Please Help A.S.A.P. I Live in San Antonio and its been very hot, until todays first rain in forever.
#256 of 762 Re: Z-71 a/c compressor problem [dogbones]
Sep 05, 2006 (10:35 am)
I had the same problem in my 2002 Tahoe, with the grinding/rattling sound when I turn on the ac. I took it to an independent garage/mechanic and he also said the same thing: I need new compressor cuz it's trying to seize up. He said the samething about the metal scraps, etc. The ac compressor belt finally just broke off and I have no ac.
So I would like help with resolving this problem too.
#257 of 762 Re: Battery has gone dead again [rockman59]
Sep 05, 2006 (11:12 am)
I was wondering how you made out with the dead battery problem. I bought a Z71 Suburban back in 04 and have been having the same problem every since. The dealer says he can;t find the problem. Did you have any luck or answers?
#258 of 762 Re: Z-71 a/c compressor problem [dogbones]
Sep 05, 2006 (1:47 pm)
If your A/C compressor did not lock up yet you can try a very simple and low cost fix for saving it or at least extending the compressor's life.
Go to an auto part store and buy a can of A/C compressor lubricant. It sounds like your compressor is running dry and that is why it is making noise and wants to seize up. You also need to have a service port hose to have lubricant added in the system.
Procedure is very simple and could fix your problem. Compressor making noise kind of says it might be ready for change though.
About metal scrap in the system it is very possible that you have metal shavings from the compressor in the system but there is a screen (at least in all cars that I have owned so far is) at the expansion valve. This very fine screen should catch pretty much all metal shavings that come from the compressor.
The other thing that catches shavings is the dryer that is also located in the system before the evaporator coil. You want to change dryer and expansion valve at the same time if you need to replace your compressor.
The quoted price of $1700 sounds way too high to me, but I'm used to work on these systems myself and don't even think about taking my vehicle for service like this. You just end up paying for something you don't need.
Of course, if you are not a hands on person you may need to pay for it but I'm sure someone else will do it for much less than $1700.
Compressor might cost a bit though but you can always find a rebuilt compressor from auto part store that is as good as a factory new one. Cost might be up from $300.
#259 of 762 Re: 1997 bad gas mileage and running hot also misfire [tsuami1]
Sep 05, 2006 (2:31 pm)
#81 of 86 Real world for Tahoe... by rspencer Sep 05, 2006 (11:37 am)
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Interested in what Consumers Union, a.k.a., Consumer Reports found when they did a random dealer purchase and fuel economy test of a 2002 model year Tahoe, 5.3L, auto trans?
CITY - 9 MPG
Overall - 13 MPG
I put this over here for u so u can see what is real world. U are getting real world for the 5.3L Tahoe. Your MPG is normal.
I get about 14 MPG O/A.
#260 of 762 2001 Tahoe engine noice A/C compressor
Sep 06, 2006 (8:56 am)
To begin thanks to all those who responded to my post. They were helpful - thank you. In conclusion to finding out the problem and solution to the grinding noise at 2000 RPMS on my chevy tahoe, it did indeed come out to be the A/C compressor. The tensioner for the A/C unit may have created the problem originally, as it did not allow the A/C unit to run correctly. As a result my compressor began to grind, with failure emenant. The damage had already been done, so the compressor needed to be replaced. In addition, the tensioner needed to be replaced to prevent future problems, and the system did need a new filter (metal scraps, Orifice A and valve. The seem also was drained of fluid to ensure to particles got past the filter. The good part, well sort of, was that with the help of your comments I was able to have a working knowledge of the problem to discuss with repair shops and part suppliers. As a result, parts from the dealers repair estimate could have been bought from the same dealer at their commercial parts dept. for much less. Example was the compressor itself. Estimate cost $576.00 - Commercial Parts dept. cost $387.00. Same Part! I also called Part suppliers (Napa etc.) and their prices for new top end compressors were about $380.00. I told this to the service sales man and he just said "really". In summary, I took my car away from the dealer, went to a specialist with all my new knowledge, quoted prices for parts and discussed tensioners etc. After his inspection, he determined what I said above, the same as the dealer, but without all the bull such as "having rear A/C increases the price tremendouly". In fact having a rear A/C system only slightly changes the compressor unit. It does not involve two units. The final price $850.00. This saved me $900.00 from the dealers price.
If I can help any one the all of you help me please let me know.
#261 of 762 Re: 2001 Tahoe engine noice A/C compressor [dogbones]
Sep 06, 2006 (4:41 pm)
Thank you for letting us all know the end of your story, which was kind of a happy one when you was able to save a considerable amount of money.
So many people posting here don't say a word about it. The trail of a problem just stops. Often it might mean (I hope) that this forum gave some help in fixing a problem but so many don't bother letting others know what really happened.
Thanks to you!
#262 of 762 99 TAHOE NO START THIS AM
Sep 07, 2006 (5:45 am)
DROVE THE TRUCK LAST NIGHT, RAN FINE...THIS MORNING I GOT IN AND THE DOME LIGHTS WERE BRIGHT, BUT AS SOON AS I PUT THE KEY IN THE IGNITION I STARTED HEARING DIFFERENT CLICKING NOISES, LIGHTS WENT REALLY DIM, DOORS LOCKED ON THEIR OWN, THIS ALL WITHOUT TURNING THE KEY. THEN WHEN I TURNED THE KEY, I HAVE NOTHING...NO LIGHTS, NO SOUNDS, NOTHING. I INITIALLY SUSPECTED THE ALTERNATOR, BUT THE RESPONSE I GET WHEN I ONLY INSERT THE KEY CONFUSES ME, LIKE MAYBE I HAVE A SHORT SOMEWHERE. WHAT DO YOU THINK? ANYONE EVER HAD THIS PROBLEM?
#263 of 762 Re: 99 TAHOE NO START THIS AM [freezinfeet]
Sep 08, 2006 (4:06 am)
I just learned my 2002 Tahoe has a disable system when the vehicle senses it is being stolen. Perhaps the system does not like the key you are using, esp if its a copy. Make sure you use the factory key to start and see iof that makes a differnce.
#264 of 762 Re: Chasing oil leaks [need411]
Sep 12, 2006 (12:45 pm)
From: need411 I didn't get any replies so I fixed it the easy way. I traded it in on a 2005 Yukon. Let the dealer or next guy figure it out. Good Luck