Question about 2000 GMC Sierra

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Where is the heater contol valve located on a 2000 gmc sierra pickup?

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Posted on Jan 02, 2017

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SOURCE: 2000 gmc sierra 1500 5.3 v8. a/c heater control problem

your heat/cool and vent selection options are controlled by engine vacuum through small clear tubes attached to the rear of your climate control interface. Other vehicles have small steel pull wires that operate the desired changes. You might try removing the trim and any fasteners affiliated with the interface/console. GENTLY pull outward and look to see if any of these tubes are pulled off or cut/damaged. Did anyone recently install a new stereo in the vehicle? If so, the vacuum tubing and or pull wires that change your outlets could have been damaged when the stereo unit was pushed into place. Hope this helps

Posted on Sep 09, 2009

Testimonial: "Very good information. THANKS!"

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SOURCE: 2000 gmc sierra heater

the quick connect can be removed it requires a special tool thatr i dont seem to have and one can be picked up from the nearest parts store for about 6.00 dollars i cut mine off with a drimmal tool

Posted on Dec 09, 2008

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SOURCE: My 1989 GMC Sierra Pickup

it's your torque converter it let loose you will either have to get a new tranny or get your torque converter fixed it happened to my truck im still saving up before i can fix it. im a mechanic with a certified level two mechanics and starting my level three this spring.

Posted on Jan 21, 2009

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SOURCE: Replace starter on 1992 GMC Sierra pickup truck

First thing unhook positive battery cable, unhook main cable on starter selanoid and small wire on selanoid (there may be 2 small wires) There may be a bracket on front of starter that has to be removed, and then the 2 main bolts that hold it to engine block and it should come out.

Posted on Feb 14, 2009

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SOURCE: where is pcv valve on 2000 gmc sierra

It is on your left/right side valve cover area.

Posted on Oct 26, 2009

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Where is the heater control valve on a 1999 gmc siera

Hello! If your Sierra is equipped with a Heater Control valve it is near the firewall located in the inlet heater hose...From 1999-2000 a change was made and your vehicle may not use a HCV ...If it is there, here is the part # and price...

ACDELCO Part # 155686...$20

Send symptoms of the problem in a comment if you are having an issue with heat and a HCV isn't installed on your vehicle...Guru...........Saailer

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1 Answer

Heater not blowing warm air. Thermostat has been

Check the water control valve behind the engine close to the firewall. This valve opens and closes to allow hot coolant to enter the heater core. It is usually connected to the heater controls with a cable. When you adjust the heater control for heat, a cable activated lever on the valve should move and allow coolant to move through the valve. The cable from the heater control can come loose from the lever, or the valve itself can become corroded and hard to move.

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Where is the HVAC box located on a 2000 GMC Sierra 4X4. I beleive the mixing door is not working correctly, I'm only getting warm air not hot. All ready changed thermostat and checked hoses.

Check in the one heater hose will be a control valve. Check the operation of the valve(this is the heater control valve). If the lever on it appears to be moving. Take the valve out and manually check that the valve is opening and closing the whole way. If not replace the valve and recheck. If it is the heater core may be clogged not allowing the hot coolant to flow thru so you can get heat.

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2000 gmc sierra 5.3l heater does not get hot

After replacing the thermostat I pulled the heater hoses off and blew air through the heater core at firewall. Can only blow in left side as directional valves will prevent opposite. Chunks of stuff came out with coolant. I then put a piece of hose on the left side and shot water through until it came out clear.
Put it all back together and heat works fine.

Dec 31, 2008 | 2000 GMC New Sierra 1500

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