SOURCE: replace heater core 1994 chevy g20 conversion van
Here a are the instuctions to remove it. I did not know if you have A/C or not so I included both for you.
REMOVAL & INSTALLATION
Without Air Conditioning
ALL MODELS
See Figure 1
CAUTION
When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
To install:
1990-95 MODELS With A/C
To install:
SOURCE: No Heat and Overheating in 1999 Chevy Silverado
After replacing the thermostat, you must bleed the air from the cooling system.
To bleed air from the 2.2L and 2.5L engines, remove the plug or sensor
on the top of the thermostat housing. Fill the radiator with coolant
until the coolant comes out the hole. Since the plug is made out of
steel and the thermostat housing is aluminum, it is a good idea to
apply an anti-seizing compound or Teflon® tape on the plug threads
prior to installation. Install the plug and continue to fill the
radiator. This will vent all trapped air from the engine.
Any trapped air in the heating system will have to be displaced by coolant. Once the cooling system is filled, with the radiator cap off, turn of the heater at it's highest setting. Start the engine and allow it to reach operating temp. You should see a drop in the coolant level as the air in the heating system is displaced by coolant. Add coolant to the proper level and replace the radiator cap.
Keep a close eye on the coolant level for at least the next couple of weeks. The cooling system is a "closed" system. Any significant decrease in coolant level indicates a problem.
If you have any questions, let me know.
Please take the time to rate this solution.
Drive safe and be warm.
clarkco
SOURCE: 1992 Chevy S10 has no heat, Radiator is full of
please change your thermostat,I hope that help you it sounds like it stuck open
SOURCE: chevy astro van heater blowes only cold air
the problem is probably the heater core, it can become clogged with dribris. this stops heat from the engine getting to it and then no heat.
SOURCE: Firing ORDER FOR THE 2006 chevy Uplander Van 6
There are 2 6 cylinder engines for that year. Both are the same as far as wiring/firing order but gave you both anyway(see below). There have been times that I thought I did the same thing as far as the firing order and have been doing it for 25+ years. Sometime i did and sometimes I didn't. So if you find the wiring is correct and you seem to have a miss, In about 90 percent of the time that this has happened to me I had knock a vacuum hose off so you might want to start there if they are right. It sure sounded like a miss at those times but was vacuum. There are other factors but that's where I would start if this is the case. I hope this helps and good luck.
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