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My 1994 chevrolet blazer knocks when i turn it off

Air conditions knocks when i turn it on and off

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The sound you hear is one of the door motors trying to run. It is likely the recirc door motor. So try moving the controls to recirc before you shut it off and if the noise does not occur the recirc motor will need to be replaced. If you already have it on recirc try moving to fresh air before shutting off. The motors have plastic gears inside that strip and will need to be replaced to repair the noise.

Posted on Jul 19, 2013

6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Transmiision for 1994 Chevrolet s10 blazer

if its the rear seal where the driveshaft enters the trans you need a transmission output seal for the tailshaft housing.

Posted on Sep 24, 2008

  • 2 Answers

SOURCE: need wiring diagram 1994 blazer

buy service manual

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: 1994 S10 Blazer Fuel Issues?

YOU SHOULD INSTALL ORIGINAL GM PART AND NOT AFTER MARKET. I INSTALLED 2 AFTER MARKET PUMPS THEY WORKED FOR A WHILE THEN STOPPED. THE PROBLEM WAS NOT ENOUGH PRESSURE, SINCE I INSTALLED GM PART NO PROBLEM.......

Posted on Jun 27, 2009

roniecon
  • 6826 Answers

SOURCE: air conditioning compressor pulley siezed on my

If it is just the pulley,and not the compressor,then yes,the bearing for this is replacable for about 20 dollars or less,but if the compressor is locked up,you will have to replace the whole ac compressor,and it`s components.

Posted on Jul 22, 2010

dttech
  • 4803 Answers

SOURCE: 1994 Chevrolet S-10 Blazer Heater,

The most likely cause is a broken vacuum line in the engine compartment. The next thing would be a bad (leaking) mode control switch. (It switches the vacuum to your mode control motors.)

Posted on Dec 18, 2010

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1 Answer

1997 chevrolet blazer air conditioning trouble shooting


A mechanic would check to see if the system is full of freon, then check for voltage at the relay, the low pressure switch, and the ac clutch.

Aug 17, 2012 | 1997 Chevrolet Blazer

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I have a 1993 Chevy S-10 4.3L automatic. The heat won't shut off. It pours out regardless of the position of the climate controls. Coolant level and condition good. AC would work but. Thanks.


#46-12-03: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY) - (Apr 7, 1994) 999999995.gif REVISION: 04/14/94
THIS BULLETIN IS BEING REVISED TO CORRECT THE TRANSMISSION LISTED IN THE MODELS. ----------------------------------------------------------------------
SUBJECT: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY)
MODELS: 1994 CHEVROLET AND GMC TRUCK S/T PICKUP WITH 4.3 ENGINE (VIN Z - RPO LB4), 4L60E TRANSMISSION (M30) AND AIR CONDITIONER/MANUAL CONTROLS (C60); OR 4.3 ENGINE (VIN W - RPO L35) AND A/C (C60)
BUILT BEFORE THE FOLLOWING VIN BREAKPOINTS:
PLANT DIVISION VIN LINDEN GMC RK501034 SHREVEPORT GMC R8501199 SHREVEPORT CHEVROLET R8105893 LINDEN CHEVROLET RK103097
CONDITION:
SOME OWNERS MAY EXPERIENCE A CONDITION WHERE THE AIR CONDITIONER IS TURNED ON AND DELIVERS ONLY WARM AIR.
CAUSE:
THE AIR CONDITIONER COMPRESSOR MAY DELAY LONGER THAN THE "ORIGINAL DESIGN" INTENDED 12 SECONDS, OR MAY NOT ENGAGE, DUE TO THE POSSIBLE MALFUNCTION OF THE COMPRESSOR DELAY RELAY.
CORRECTION:
TRUCKS BUILT BEFORE THE VIN BREAKPOINTS LISTED ABOVE MAY NEED A NEW AIR CONDITIONER DELAY RELAY. REPLACE ONLY WITH 15990540 AIR CONDITIONER COMPRESSOR DELAY RELAY. SPECIFIED PROCEDURE IN SERVICE MANUAL NATP 9429, PAGE 1B-59. TEST AIR CONDITIONER OPERATION FOR DELIVERY OF COOL AIR.
NOTE:TO TEST FOR PROPER OPERATION, PUT THE A/C CONTROL ON THE "OFF" POSITION, START THE ENGINE, THEN PLACE THE A/C CONTROL IN THE "ON" POSITION. THIS SEQUENCE WILL PROVIDE IMMEDIATE ENGAGEMENT OF THE AIR CONDITIONER COMPRESSOR. WHEN THE ENGINE IS STARTED WITH THE A/C CONTROL ALREADY "ON", THERE WILL BE A NORMAL 15.0 SECOND DELAY FOR THE AIR CONDITIONER TO ENGAGE.
SERVICE PARTS INFORMATION:
P/N DESCRIPTION QTY
15990540 A/C COMPRESSOR DELAY RELAY 1
PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

Jul 29, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

My 1994 Chevy Blazer S-10 is not blowing out any air when I turn the heater on...


Is the fan turning on? I assume so.. when you change the hot/cold selector do you hear the flaps inguage? could be the linkage there. Otherwise, check your coolant level - make sure your heater core isn't plugged (let engine heat up, then see if the heather both heater hoses going into the firewall are warm). If one is colder than the other, flush the heater core.

Jan 23, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

Problem for Chevrolet 1998 blazer the air


If the compressor is cycling on and off and the system isn't getting very cold it's low on freon. You'll need to have it leak tested, repaired, and recharged.

Jun 29, 2010 | 1998 GMC Blazer

1 Answer

Timing chain clicking noise or other clicking noise when engine runs.


Is your air conditioning on? Turn it off and see if it goes away. If it does it is the air conditioning compressor. If not, check oil level and the serpentine belt.

Jul 01, 2010 | 2001 Chevrolet Blazer

1 Answer

I have a 1994 chevy blazer 4.3 vortec it is displaying fault codes 32,35,45,82 can you tell me what thay mean?


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Oct 02, 2009 | 1994 Chevrolet S-10 Blazer

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In a 4.3L chevy engine, what are the two sensors on top and back of the block


These are knock sensors which will detect engine rattlee or knocking and the pcm will then attempt things like ****** the timing to rectify the condition

Sep 17, 2009 | 1997 Chevrolet Blazer

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Need wiring diagram for ac on 1994 s-10 blazer


Here's a little....finding the schematic....

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Mar 15, 2009 | 1994 Chevrolet S-10 Blazer

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Where is the egr located on a 1994 chevrolet s10 blazer 4.3 Vortec? Usually the egr valve is easy to see. Why can't I see it on the blazer? Thanks Jeff


It is beneath the air intake connected to the upper intake, that's probably why you can't see it. The manufacturers don't make things easy.

Mar 10, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Knocking after fixing fuel in oil problem


you did change the oil after all that gas whent in the oil let me now pierre p.s dont rate thanks for trying

Mar 01, 2009 | 1994 Chevrolet S-10 Blazer

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