Question about 1996 GMC Sierra

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How to replace heater control valve on 1996 gmc truck

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6ya6ya
  • 2 Answers

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

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  • 98 Answers

SOURCE: 1996 buick roadmaster keeps overheating:

A shotgun approach to repairs can really rack up the bills.

If your symptoms are loss of water and you have replaced the thermostat, you more than likely have an issue with steam. And that steam more than often comes from a bad head gasket. Most head gasket gasket failures seem to be confined to the water side initially, but let it go on bigger damage will occur.
You can buy a litmus test strip to dunk in the coolant. It will indicate if there are exhaust residuals in the water and thus a gasket failure.

However it may just be something simple, given that you have just about replaced everything:

have you given the radiator a good hosing inside and out?
is the radiator fan running when it should be?

Posted on Sep 07, 2008

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tripletauto
  • 1450 Answers

SOURCE: 1996 GMC Sonoma heater core

the dash has to come out

Posted on Sep 11, 2008

  • 1 Answer

SOURCE: heater control valve

Where is the thermostat in a dodge dakota 1992 located? Flushed it yesterday still just have heat blowinf ti side vents rather cool windsheild defrost. Maybe there is another problem?

Posted on Mar 14, 2009

  • 144 Answers

SOURCE: the rear a/c on my 1996 gmc suburban is blowing

the problem is in the rear expansion valve. this valve is located at the rear evaporator core. i am assuming the freon level has been checked and is ok. this is a common problem with these vehicles. hope this helps!!

Posted on Sep 04, 2009

  • 387 Answers

SOURCE: i have a 91 toyota truck and the heater dont work

1. Check you antifreeze to make sure it is up to the correct level. Low coolant doesn't make it's way to the heater core thus no heat.

2. IF that don't work, replace your thermostat and one of those things 9 times out of 10 will fix your problem and they're cheap too.

Posted on Oct 20, 2009

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there is a valve on the heater hose under the hood. its either vacume or cable operated. check to see if valve is moving. this controls the water flow into the heater core. if this is stuck then thats your problem.also if its not cable operated make sure its getting vac to the actuator

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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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the problem is in the rear expansion valve. this valve is located at the rear evaporator core. i am assuming the freon level has been checked and is ok. this is a common problem with these vehicles. hope this helps!!

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Bad vacuum pod, try using a mini vacuum and the on the valve block behind the glove box take suction on each one till you find the bad one.

Jun 10, 2009 | 1996 Mercedes-Benz C-Class

1 Answer

1996 GMC Sonoma heater core


the dash has to come out

Sep 11, 2008 | 1996 GMC Sonoma

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