Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Chevrolet > TrailBlazer | Trailblazer EXT
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 07-18-2018, 04:29 PM   #1
chiccokaiser1
AF Newbie
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Ac compressor

Hi. Can anybody guess my a/c compressor oem number? 2002 4.2 6L ltz with rear blower. So I can buy correct part by the time it got noisy... Thanks
chiccokaiser1 is offline   Reply With Quote
Old 07-19-2018, 10:57 AM   #2
chiccokaiser1
AF Newbie
Thread starter
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Re: Ac compressor

Vin is 1gndt13s022430220
chiccokaiser1 is offline   Reply With Quote
Old 07-19-2018, 03:23 PM   #3
aleekat
AF Enthusiast
 
Join Date: Dec 2001
Location: clarksville, Tennessee
Posts: 1,699
Thanks: 23
Thanked 183 Times in 179 Posts
Re: Ac compressor

Call the dealer parts guy. They are usually pretty helpful.
__________________
Post back, that's what makes Forums Work.
aleekat is offline   Reply With Quote
Old 07-20-2018, 09:23 AM   #4
Schurkey
AF Enthusiast
 
Join Date: Jul 2005
Location: the Seasonally Frozen Wastelands
Posts: 884
Thanks: 12
Thanked 58 Times in 58 Posts
Re: Ac compressor

Quote:
Originally Posted by aleekat View Post
Call the dealer parts guy. They are usually pretty helpful.
It's a long-distance call from Italy.
__________________
.
.
For the good of the Free World, DEMAND COMPENSATION FROM CHINA for their release of the Virus Originating in the Wuhan Laboratory, released (intentionally or negligently) into the world in 2019 (VOWL-19). Ten trillion to start with, increasing as needed from there, PLUS compensation for the sickened, and "wrongful death" settlements for the families of those who didn't survive. END trade with Communist China.
Schurkey is offline   Reply With Quote
Old 07-20-2018, 09:01 PM   #5
Tech II
AF Fanatic
 
Join Date: Jul 2011
Location: Worcester, Massachusetts
Posts: 5,017
Thanks: 70
Thanked 618 Times in 610 Posts
Re: Ac compressor

Tech II is offline   Reply With Quote
Old 07-21-2018, 04:56 AM   #6
chiccokaiser1
AF Newbie
Thread starter
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Re: Ac compressor

I have seen on rock auto but I have also seen there are different types of compressor. I would like to make sure I buy correct part.. by vin maybe..
chiccokaiser1 is offline   Reply With Quote
Old 01-28-2019, 12:34 PM   #7
chiccokaiser1
AF Newbie
Thread starter
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Re: Ac compressor

Hi. Do you believe it is possible to replace clutch bearing without take off the entire compressor? I would try that before. What do you think? Thanks
chiccokaiser1 is offline   Reply With Quote
Old 01-29-2019, 12:31 AM   #8
brcidd
AF Enthusiast
 
brcidd's Avatar
 
Join Date: Jul 2005
Location: troy, Ohio
Posts: 2,311
Thanks: 2
Thanked 171 Times in 169 Posts
Re: Ac compressor

Last 2 or 3 Trailblazers I worked on- for a/c inop- had the air gap too wide- a/c voltage was at clutch on compressor- just could not draw that armature drive plate in against the spinning pulley face. Answer has been simple- remove the drive plate 10mm nut and wiggle loose the plate that is on a splined shaft. then carefully remove any and all shims in behind. Throw the thickest shim over your shoulder and replace clutch drive plate with remaining shims if any. Now air gap is back to speck and compressor will run another 5 yrs.

Can be done while a/c compressor is still on vehicle and charge does not have to be removed.

If this is not your issue- please ignore....
__________________
Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
brcidd is offline   Reply With Quote
Old 01-29-2019, 09:59 AM   #9
chiccokaiser1
AF Newbie
Thread starter
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Re: Ac compressor

Fine.. thanks for your super detailed analysis.. by the way what was the symptom for the defect you found? My compressor is a little little bit noisy when clutch engages. Could your theory fit for me?
chiccokaiser1 is offline   Reply With Quote
Old 01-29-2019, 10:01 PM   #10
brcidd
AF Enthusiast
 
brcidd's Avatar
 
Join Date: Jul 2005
Location: troy, Ohio
Posts: 2,311
Thanks: 2
Thanked 171 Times in 169 Posts
Re: Ac compressor

In my scenario, clutch does not engage.......
__________________
Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
brcidd is offline   Reply With Quote
Old 01-30-2019, 06:10 AM   #11
Blue Bowtie
Registered Offender
 
Blue Bowtie's Avatar
 
Join Date: Mar 2006
Location: Rural
Posts: 6,513
Thanks: 6
Thanked 341 Times in 336 Posts
Re: Ac compressor

It will probably be easier to identify the compressor by its part number instead of the vehicle VIN.

Any reciprocating compressor will emit some noise when operating due to valves. If the noise is impulsive, that could be normal. If the noise is knocking or grinding, that could be a mechanical noise from a bearing or piston. If the A/C system has been serviced, was the oil replaced?

With the engine off, can you grasp the hub of the compressor clutch and turn it by hand? If so, can you feel any grinding from a bearing?
__________________
Permanent seat assignment on the Group W bench...
Automotive Forums Survival Guide
Blue Bowtie is offline   Reply With Quote
Old 01-31-2019, 11:35 AM   #12
Tech II
AF Fanatic
 
Join Date: Jul 2011
Location: Worcester, Massachusetts
Posts: 5,017
Thanks: 70
Thanked 618 Times in 610 Posts
Re: Ac compressor

Is the noise there when the compressor is not running, and quiet when it runs?
Tech II is offline   Reply With Quote
Old 02-06-2019, 01:09 PM   #13
chiccokaiser1
AF Newbie
Thread starter
 
Join Date: Sep 2007
Location: Verona
Posts: 81
Thanks: 1
Thanked 0 Times in 0 Posts
Re: Ac compressor

Sorry if I answer so late but automotive forums mails ended up in my spam..
By the way:
- noise present when clutch engages
- no service on ac system at all since ten years at least, no leaks, works great
- I can spin pulley freely, no bearing game but a really light hiss
- I can spin compressor by hand, not freely but not stuck, seems correct to me
Looking closer at the compressor, bearing should work when clutch is off so it is not my case.. not lucky.
chiccokaiser1 is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD

Go Back   Automotive Forums .com Car Chat > Chevrolet > TrailBlazer | Trailblazer EXT

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 03:47 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts