I am trying to figure this out myself. I have a 96 Chevy S-10 Blazer and I believe it is the vacuum acuator located under the battery box in the engine compartment.
Your 1999 Chevy blazer doesn't have a timing belt.
Under your battery tray
on the front axel
my chevy blazer 1984 the air conditioner blows from down side only.
Need to know the location of the vacuum leak in order to answer this.
You can find a diagram for the vacuum system in a 1995 Blazer 4x4 will be located in the Blazer service manual. The manual can be purchased in most auto parts.
Check for vacuum leaks.
Vacuum pump? Is this a diesel?
No, they will need replaced if defective.
I need a diagram for the 1991 Chevy blazer to see where the 3 hoses go to coming off the transfer case.
The 2001 Chevy Blazer vacuum switch solenoid can be found on the firewall in the engine compartment. The vacuum switch solenoid will be on the passenger side of the firewall.
We replaced the temperature gauge in my 1991 Chevy blazer what is the normal operating temp?
on the top of the transmission its on the transfer case with 3 vacuum lines coming out of it.
The vacuum switch/actuator for the fan shutter is under the dash directly below the radio . IT is NOT easy to get to.
does that year have carb or tb?
Check the 96 Blazer for any vacuum leaks in the system. A vacuum leak can cause the air flow to only come out of the heat vent.
Yes, the doors from a 98 Chevy Blazer will fit a 2001 Chevy Blazer with a little moderation.
The fuse or relay for power windows on a 2002 Chevy Blazer is located under the dash near the emergency brake. It can be readily replaced by pulling it out.
Check for vacuum leak
Neither, I believe it's electric.
check for vacuum leaks that wull usually cause this problem
The heater blend door is not run by vacuum. It is run by an electric actuator.
Section 4-31 of Chilton Book #28160