Chevy s10 heater control valve location. It's only the defroster position that won't work.
Chevy s10 heater control valve location System has no heater control valve. Check for leaks or valve failure if heat issues Zac's S10 Blazer had no A/C and the control knob for the vent system didn't do much of anything. It is located under the hood. It regulates hot coolant flow into the heater core to control cabin temperature. When i switch to defrost or floor there is only a tiny bit of air going to that area. Dec 29, 2018 · I have a 98 S10 LS 2. Nov 21, 2020 · I need to replace my blend door (2001 Blazer 2WD, 2DR, manual ac controls). To backflush the heater core, disconnect the heater hoses at the firewall, then use a garden hose to flush water backward through the core to clear blockages. The experts at 1A Auto show you how to replace the A/C and heater air temperature control on your 99-06 Chevy Silverado or Suburban, or GMC Sierra. Put 'Astro van heater control valve' into an Amazon search. AutoZone's Repair Guides tell you what you need to know to do the job right. • Check here for more videos on the 1994-2004 Chevy S-10 • Chevy S-10 2nd Generation 1994-2004 This repair was done on a 2000 Chevrolet S10 ZR2 4. When I set it to the floor, it seems like it's trying to send the air there, but then it just starts coming out of the defrost. The engine Temp guage is showing around 190 degrees. If it's not the mode control switch, though, you will most likely need access to behind the dash. Automatic trans with 4. Quick video on a 99 Chevy S10 pickup with no heat. I just took the panels off. Experience the same high-level performance as your original parts with this The heater control valve on a 1998 Blaer is typically located near the firewall on the engine side, controlling coolant flow to the heater core. Aug 9, 2025 · AC Delco 49SP21M HVAC Heater Water Flow Control Valve Fits 1982-1995 Chevy S10 Nov 11, 2014 · Re: Location of heater control valve on a 91 Chevy S10 Way up under the dash on passenger side. Buy Now! New Heater & A/C Control from 1AAuto. 2-liter 4-cylinder engine. You'll see the doors and their actuator locations. Get the information you need here. Email us for exact price and availability ** Chevy S-10 No Intrumentation and Heat issues - Diagnosis and repair Doogie Rick 23. Find out how to access AutoZone's Vacuum Diagrams Repair Guide for Chevy S10, S15, and GMC Sonoma Pick-Ups 1982-1993 Repair Manual. 3, auto trans, standard cab Heater is not working, fan is ok, and if I adjust the center knob with the red/blue marking, I can hear stuff happening (blend door I assume), but air is not warm. Dec 23, 2011 · Just looking to see where this is located on an 05 gmc yukon I start up the truck let it warm to operating temps and on all settings it blows cold air even on heat settings but as soon as I start to drive 2 minus down the road itt like a sudden change and blows hot heat like it should and Chevy Forums FREE technical assistance for your restoration and repair. It blows everywhere except the floor. Jun 12, 2015 · Howdy; Does anyone have a color code chart and a vacuum diagram for the vacuum operated climate control of 1980's S10's? I have an '89 S10 2. Easy fix! Sub To My Friends On YouTube! No heat in your car? Car not blowing hot air? This video will show you how to fix your car's heater whether it is your heater core, heater control valve, ble Nov 24, 2015 · Photo of original heater control valve install? The 1967 - 1972 Chevrolet & GMC Pickups Message Board Don’t sweat in the summer or shiver in the winter! Service and repair your Chevy S-10 Pickup’s HVAC system with our A/C and heating parts to drive in comfort. harborfreight. This is usually located to the rear of the engine close to the firewall. Intro-Music: Sleepless Night ( by Dec 31, 2022 · The blend door controls temperature by blending fresh and/or interior air flow through the heater core and the AC evaporator. I Find the Chevy S10 vacuum parts diagram to help you accurately diagnose and troubleshoot vacuum-related issues in your vehicle. What does the heater control valve do in the 2001 S10 Chevrolet Blazer? The heater control valve regulates the flow of hot coolant to the heater core. Hose color (can be striped or solid color) - What they control Gray - Vac source from engine. 3 . http://www. What a Heater Control Valve does and how to test (most of them). I'm afraid if I pull on it I'll brake something. The problem piece is called the 'vacuum actuator'. video/ia-1AHCM00006 This video shows you how to install a new heater & ac control on your 1999-2006 Chevrolet Silverado 1500. Aug 11, 2011 · I pulled the A/C, heater control switch assy on the dash and can see all vacuum lines to switch. 3 Liter engine. Shop for the best Heater Control Valve for your 2000 Chevrolet S10, and you can place your order online and pick up for free at your local O'Reilly Auto Parts. 5L. In this video, I show how to replace the actuator that controls the heat/cool temperature door on my Silverado. System consists of a blower and an air inlet assembly, heater air distributor assembly and heater control panel. follow inlet hose to interior of vehicle should be towards the end inside near heater coil. 3 V6 is typically located on the firewall or near the heater core inlet hoses. The heater isn't producing hot air. everything else works fine. You can't miss it. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. The fan control works, the thermostat works, the direction control will direct to the windshield, upper vent but will not go to the lower heat duct. If the heater control for There is not a heater water control valve on a 2000 S10. Find the HVAC exploded parts diagram in the GM parts web site. Any way to test anything? would it bee the switch or more under the dash? help it is very hot now, it Find a vacuum line diagram for a 2003 s10 to help identify and troubleshoot issues with the vehicle's vacuum system. Help me please. Do you have any recommendations? Learn how to read and use GM truck vacuum diagrams for 1988–1998 Chevy and GMC models. The dash assembly must be removed to gain access. Black - Heater/ Defroster control (one that is probably bad on yours) Orange - Outside air/ Recirculate valve. Sep 25, 2023 · Includes 1 (One) HVAC Control Vacuum Check Valve Fits list of vehicles in image gallery fitment chart Exceptional Quality and Performance: This OE replacement hvac control vacuum check valve is designed to meet, if not exceed, the performance and quality standards of the original equipment installed on your vehicle. You should be able to see the motor shaft turn. Nov 6, 2015 · The heater control is in the middle and controls the air temperature actuator which is an electrically operated motor servo and controlled by a variable resistor (potentiometer) driven by the heater control. 3L that I bought just over 2 years ago thats never had heat. Nov 21, 2009 · Check heater control valve to make certain it is opening and allowing coolant to get into the heater core. I got to the actuator with the brown and yellow vacuum lines going to it> When I switch from vent t floor, the actuator barely moved and air came out like I said, dash vents only. Aug 25, 2016 · The heater valve is integral to a vehicle’s cooling system. Sometimes it will work sometimes it wont. I've done a search here on this forum as well as a Google search, but nothing specific has been found. CAUTION: Before removing or installing any electrical units or when a tool or equipment could easily come in contact with "live" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components On average, the cost for a Chevrolet S10 Blazer Car Heater Control Valve Replacement is $190 with $95 for parts and $95 for labor. Is the control vacuum or electrically actuated and where are the baffle and direction controls located? Customer: is there a heater control valave on a chevy 2000 chevt s-10 4cyl. Where can I find the heater control valve in a 2002 Chevy S10. I can turn it back Jun 11, 2024 · Buy 16250545 HVAC Heater Climate Control Module for Chevy 1999-2004 S10 2003-2005 Blazer, 1999-2002 GMC Sonoma, 2003-2004 Oldsmobile Bravada A/C Heater Control Panel Switch: Air Conditioning & Heater Control - Amazon. The heater core recieves full flow at all times, when no heat is desired the actuator makes the door shut off air flow to the core. Some say it is GMC Jimmy, S10, Blazer DIY How to Diagnose HVAC Mode Control - Vent - Defrost - Floor Selector Mark Jenkins 78. Apr 24, 2008 · 1989 Chevrolet S-10 Blazer 2WD 4. Blows really cold and strong, just won't switch. I have a 2001 S-10 Blazer and am not getting any heat at all. Assuming one of them is source vacuum, guess I could run a new line through the firewall and splice it there. I would pull the heater control back out and use a small vacuum source to apply vacuum to the hoses. . Mar 22, 2015 · Heater control valve location The 1967 - 1972 Chevrolet & GMC Pickups Message Board Nov 14, 2009 · Anybody got anytips on removing the A/C-Heater Controls on the dash? I removed the two bottom screws and it'll barely pull out far enough to see anything. Dec 10, 2022 · The heater temp blend valve is located behind the dash assembly. 3 auto (SOLD) 1986 GMC S-15 2WD X-cab 2. Dec 8, 2022 · The heater control valve is mounted on the engine side of the heater and evaporator box which is located on the passenger side of the engine compartment. If you are going to get a vacuum source from behind the dash and go through the firewall for a vacuum operated valve you can. 2l. I want to add that I had a small pinhole leak in the radiator last summer and put in Alumseal stop leak. com https://trq. 8L T-5 (SOLD) 1992 Chevrolet S-10 Blazer 4WD 4. No need to rip your entire dashboard apart. The thermostat was replaced on 18-Oct-09, but the problem was not solved. There are many reasons for poor heating performance in S10, which are explained in this article. this is the same on 2000 to 2013 Silverado and GMC Sierra. First, check to see if the temp door Chevy & GMC Truck Heater & A/C Controls & Parts ** NOTE: Prices subject to change. I am hoping someone can point me the right direction to get this repaired. Chevy S10 – (IFCAR / Wikipedia) The heater may stop working in Chevy S10 due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door May 7, 2014 · hey guys, I ju8st bought a 2002 s10 ZR2. The heater water control valve on a 2000 Chevy S10 4. if so where is it located Sep 11, 2007 · The actuator that controls this valve (foam panel) is located to the right of the gas pedal, it has a white arm with red and blue vacuum lines going into it. Prices may vary depending on your location. Find routing tips, leak fixes, and resources for missing under-hood labels. Jan 15, 2019 · Maybe whatever control assembly there is has stopped opening and closing a valve? I'd love to see some sort of schematic as to how the temperature is controlled, as it really seems that is the culprit, rather than a plugged heater core. The ac/heat lever (left side of the panel) has a control cable. Get step-by-step instructions, diagrams, and tips for fixing vacuum line problems on your s10. Oct 20, 2022 · Where is the heater control valve on a 1999 Chevy s10 blazer? The heater temp blend valve is located behind the dash assembly. Chevy Forums FREE technical assistance for your restoration and repair. Jun 23, 2011 · Watch this video to learn how to fix heating and cooling problems. Nov 12, 2025 · Climate Control Unit A/C Heater Control For Chevy S10 GMC Sonoma 98-05 15098964 Jun 27, 2021 · Heater control valve placement The 1967 - 1972 Chevrolet & GMC Pickups Message Board Got a car repair question? 2CarPros will answer your question for free by providing information that will help solve your problem quickly. GM vehicles have abandon the control valve in favor of electrical actuators in the air distribution box to control temperature delivery. There should be a couple of bolts holing it in. I replaced the thermostat, but there was no improvement. Oct 26, 2022 · The heater control valve (HCV) is a very important component to a vehicle's water cooling and climate control systems. Our competitive prices will become a pleasant surprise for you! Dec 10, 2011 · 2wd 4. Jan 27, 2024 · The heater control valve plays a vital role in heater operation. Torn vacuum diaphram on left side mode actuator. I get conflicting "opinions". Need to know the location of the Heater control valve on my son's 97 Chevy C1500XXXXXPU. In this video I show y'all's how easy it is to replace the heater core in your first gen s10!!Thanks for watching! Let me know what you think in the comments Sep 17, 2007 · Sorry would have searched but need to head to work dont have time right now if any of you guys could help id appreciate it. We had a look and found leaking vacuum actuators, a broken defrost vent door, and shrapnel in the A Mar 31, 2024 · took Noah for a cruise in the 67 and replaced the heater core in the s10 #automobile #chevy #chevrolet #chevys10 #diy #1967chevyc10 #chevyc10 #c10 Explore our temperature control assemblies parts for Chevrolet/GMC Trucks 1973-87, Blazer, Jimmy and Suburban 1973-91. Im Having problems with my trucks heater/ac. 3 auto (DAILY BEATER - 235k and still going) The heater control will not actuate to flow to the floor. Replace your Chevy S-10 Pickup’s worn out heater control valve with a quality product from CARiD. 8K subscribers Subscribe The heater control valve is part of the vehicle's cooling system as coolant does flow through this valve. Oct 21, 2022 · Where is the heater control valve on a 1999 Chevy s10 blazer? The heater temp blend valve is located behind the dash assembly. The fan operates, and the controls seem to function properly, but there's no warm air coming out. Blower, air inlet assembly and heater hoses are located on the engine side of dash panel while heater core and distributor duct are on passenger side. I am not sure if it is the hydraulic actuator behind To ensure the heater system in your 2000 Chevy S10 is functioning properly, it is important to regularly inspect and maintain the heater core, heater hoses, heater control valve, blower motor, and temperature controls. Add me on Twitch: https:/ Find a diagram of the air conditioning system in a Chevy S10 to help troubleshoot and repair any issues with the cooling system. The air still blows out the front or floor vents. I myself had a hard time finding the right " Routing " and this is the best I can come up with. Model specific subject matter experts, classified ads and more. Jan 10, 2018 · Do I have a heater control valve? 2000 silverado 1500 LS 2wd, 5. Where did I get my " Source "? From a 1996 Chevy Blazer and a 2001 Chevy S10 Crew Cab. 2002 chevy s10 blend door actuator removel (3rd back screw) Harrells tips tricks and reviews 224 subscribers Subscribe Nov 27, 2024 · I have a 2003 S10 ZR2 4. Fairly simple for the novice mechanic. Truck has a small coolant leak near Aug 8, 2010 · I have rear heat but it takes a while to get hot so I figured I will change the heater control valve now so if anyone could point me to its location it would be appreciated! if that doesnt work I am gonna replace the thermostat! Where is the "blend door actuator" located? My gf has some heater issues as well. This part had been identified by other. Replacing one requires a new valve, some basic tools, and fresh coolant. It's only the defroster position that won't work. No contol or low air vent to floor. com FREE DELIVERY possible on eligible purchases Mar 22, 2015 · Heater control valve location The 1967 - 1972 Chevrolet & GMC Pickups Message Board May 25, 2003 · I fixed the hissing sound coming from the HVAC control panel, as well as the vents not blowing out of the right areas. I'm looking for a diagram that shows the location of this unit. I've scoured the web and forums and the stock How to Fix 73 - 87 Chevy C10 Climate Vacuum Control Valve Leak for $1 | No More Hissing Behind Dash! How to Install a Budget A/C Kit in Your Classic Truck/Car (Full DIY Guide) Nov 1, 2009 · 1988 Heater Control valve placement The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board THIS IS THE FASTEST WAY TO DO THIS!! 1994 to 2004 Chevy S10 and Blazer, as well as Sonoma and Jimmy heater core replacement repair. 3L Extended Cab Pickup 2-Door 4WD and the This videos is just showing the hose route to heater control valve Heater Controls Fixed On My Chevy C10 OCG-Olde Carr Guy 40K subscribers Subscribe Mar 17, 2023 · As many have noted, those plastic valves are notorious for breaking way too easily, and most everyone suggests you have a new one in hand before attempting to replace heater hoses. Learn how it works in this comprehensive guide and see a sample diagram. Replace actuator without removing the whole dash. The black disk-looking thing next to your gas pedal with two vacuum lines going to it. Dec 9, 2007 · In fact, I am not sure it is located there on a 95 because the entire heater box assembly is different. This original part is NLA from GM or AC The heater control valve (also known as the hot water valve) is the component that collects some of the hot coolant from your engine and diverts it to the heater core. Ideal for revamping and personalizing. This has been this way since Mar 5, 2020 · Have a 85 C10 and I can't get the AC to switch from the floor to vents. For quite some time, my truckling has been suffering from a vacuum leak that would sometimes make the climate controls not work (especially under hard acceleration--needed to keep after the Jan 20, 2005 · My heat/AC vent control isn't working properly. Customer: I own a 1999 Chevy S10 with a 2. I also have the dash hiss. I have air blowing out the Dash Vents constantly. I'm curious about how to fix this. 2 the temp selector doesn't seem to work but I don't know if it is that or something under the dash, I think it is stuck at about 80% heat. com/t-bar-with-3-8-eighth-inch-flexible-rat NOTE: The temperature valve actuator is located on top of the heater case. Thanks for any help. It isn't that actuator that breaks, it is the valve (foam panel). Heater Core Replacement? I Have A 2003 Chevy S10 And Recently The Heater Core Just Went. The HCV itself for this application can be found inline to the heater core lines. 1K subscribers Subscribe Apr 26, 2004 · I have been all over the internet trying to find an answer and hope someone here can explain in detail where the heater control valve is on a 1999 S10 4cyl, and how to trouble shoot it or replace it. I finally got around to replacing the heater core and all that entails with that just to find out that the heater core was fine and working properly, however I found that the plastic arm that connects the big How to BYPASS your heater core | Heater core Broke on the Chevy S10 Top 5 Problems Chevy S-10 ZR2 Truck 2nd Generation 1994-04 Chevy S10: No Heat or Defrost - required a heater core flush In this video I show you the easiest way to replace your blower motor actuator. Had a couple of vacuum hoses under the hood unhooked and although I hooked them back up to a vacuum source, nothing had helped. Bi-level works half way, as it blows out the bottom all the time and the only position of the vacuum control switch that does anything is bi-level Jul 16, 2018 · The function of the check valve (and the reservoir tank) is to allow for proper operation of the mode control even when no vacuum source is available from the engine. Jul 7, 2010 · WHERE IS THE HEATER CONTOL VALVE LOCATED | Find answers to your 1999 Chevrolet S10 question from certified mechanics and auto experts. The gauge shows 150 degrees, while the thermostat is rated for 195 degrees. Oct 18, 2022 · The heater in Chevy S10 ensures comfortable temperature in the passenger compartment when the weather is chilly. It will show the 6-port as a GM #15-5551, and the 4-port as a GM #15-5557 Show that to your local parts guy. The mode doors control air flow direction through the ducting and floor, dash and defroster vents. REMOVE OR DISCONNECT Negative battery cable. Ensure the engine is cool before starting. My switch panel is old and only works on high and when I goto do my cluster I'd like to go The heater core in a 2001 S10 Chevrolet Blazer is responsible for transferring heat from the engine coolant to the air that flows into the cabin, providing warmth during cold weather. Thanks For Watching!!!!96 Chevy Tahoe Heater Control Valvedavesgarage512 Jun 16, 2007 · I have 98 with the 2. Blows out of top vents only. I Chevy S10 Heater Control Valve Location. When i close the Dash Vents with it on Defrost or Floor setting then i can feel more air coming from that location. The HVAC system is stuck in vent mode. The control selector works okay in the other positions, but when I put it in defroster position, it doesn't work. The temp control switch is only switching temps half the time. Jul 16, 2009 · I want to know if I install a heater control valve in my jimmy (sig) will the ac work with it actuated (bypassing the heater core)? Apr 4, 2011 · Location of heater control valve on a 91 Chevy S10 Pickup V6 2WD way up under the dash on passenger side. I Need To Know If There Is A Way To Repair The Heater Core Without Customer: I have a 98 S10, and the heat won't blow out on the floor. It seems the blend door is not working I looked at all my hydraulic actuators and they are moving and working fine I just need a schematic of the heater area near the blend door where you access it on the driver side. nliwvbddxuvfghbhguoangdwznddhtfnnpufhsykycnzcumjddkzpdnawrwkcqleqtxwu