Antifreeze leak on the front of the block passenger side
I replaced the water pump soon after we bought the s-10 blazer used and the haynes manual does not even come close to the right configuration for the 4.3 v 6 now i have a leak on the front of the block and can't get the a/c unit off to see behind it to see where it is leaking. Jeff
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check oil first. If it looks like a milk shake, its most likely head gaskets. (worst case besides a cracked head/block) could be many things. Check upper & lower radiator hose connections. (upper to water neck...lower to water pump) Check the heater hoses on the passenger side going from intake & water pump into the firewall. (should be a 3/8" size hose) Those are a more common leak on the GM vehicles)
if you hear a knocking or fast tapping noise, it could be the bearing in the water pump, and you could be leaking from the water pump flange at the front of your motor.
Hope this helps.
If you find the problem and need advice, let me know. eric
the fan you are referring to is inside the trailblazer on the passenger side behind dash near floor wall? If this is the case it is the heater core and needs to be replaced by a professional. If is is under the hood in the engine compartment it is the water pump in need of replacement? thanks good luck on the heater core..
you need to figure out where the coolant is leaking from. Some common areas are
the water pump in which case you would be able to remove the splash shield from under the front of the vehicle and using a flash light be able to see coolant coming out of the weep hole of the water pump.
The intake gaskets. Look in the corner of the intake valley where the head and lower intake meet right under the a/c compressor. If you see coolant its leaking and needs to be replaced.
The radiator, you'll be looking for wet spots on the side tanks of the radiator. Loose upper and lower radiator hoses could also cause this.
If you can't find anything visually you'll need to bring it in and have it pressure tested.
you could have a expansion plug on the left side of the engine block leaking antifreeze,if your blazer is a 4x4 remove the skid plate under the front bumper and you should be able to see where its leaking from,a water pump will be a steady drip while its running usually but a expansion plug will pour out very fast
If it is the water pump it will have a rad hose attached to it. There is supposed to be a small hole in the bottom of the water pump. When it starts leaking, it's time to replace the pump. You can do it yourself. A few wrenches and a couple hours is all you need. If you are unsure pick up a Haynes manual for your car when you get the new pump.
If it's your heater core, unless you're a mechanic you probably should get professional help. The heater core is located on the firewall and many parts need to be replaced to get to it. Do you see water on the floor inside the vehicle, Many times a heater core will leak inside.
were at on the passenger side? If its in the front floorboard,passengers side.the heater core may be leaking antifreeze.Also the a/c drain it also located in the same area.check your antifreeze,if not low,drive for a few miles with a/c on,stop on dry level place.there should be water dripping under passengers front.that is were the a/c drain is supposed to be.