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the heater core was stopped up just flushed it out ok now
The only access to the heater core on a 96 S10 blazer is by removing the entire dash asm. It is not accessible from the engine compartment. If you are not familiar with disabling the the air bag system, do not attempt this repair.
on the firewall more towards the passenger side there are 2 hoses next to each other.
Same as a 96 blazer go here.How_do_you_replace_the_blower_motor_on_a_1996_Chevy_blazer
see the answer for how do you replace heater core 96 jetta its the same good luck and god speed
Your heater core may be clogged. Have the heater core flushed and refill the system with fresh coolant.
Disconnect the heater hose off the heater core on the firewall and remove the inside middle side panels along with the lower heater core panel and pull the core straight out.........
I would first recommend getting the Chilton manual. I did the heater core on my wife's 96 Blazer. It is a very involved process and should only be attempted if you are a fairly knowledgeable mechanic. You have to remove the instrument cluster and drop the steering column to start. The Chilton manual covers this fairly well. Dennis
The question you ask is too involved for a proper answer. You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library. Newer answer: A Chilton or Haynes manual will not help you through the process, so don't waste the money or time trying to go that route. Try automotiveforums.com there is a Blazer specific forum where how to's are posted with photos. I believe that the heater core how-to posted there is for a 98 Blazer, but the fundamentals are still the same for a 96. Good luck! Dawn Another New : The Chilton manual helped me quite a bit. I changed the heater core on my wife's 96 Blazer. It involves removing the entire dash. It is a very long and involved process and should only be attempted if you are a fairly good mechanic. I have a 98 Blazer and the process is not the same for this vehicle. On the 98, the firewall must be cut to access the heater core. Dennis
If you look from the engine compartment you will see the 2 heater hoses that connect to your heater core at the firewall towards the passenger side
Thermostat and/or heater core may be defective
Check the heater core, it is probably bad. It could be heater hose connections to the heater core, but I would bet on the heater core going bad.