iFixit - Answers With Device "1995-2005 Blazer"

1995-2005 Blazer: My heater isn't blowing hot

Sun, 11 Jan 2026 17:36:56 -0700

My s10 blazer isn't blowing hot air, Luke warm perhaps, but with 9° in Colorado that's not enough. Can anyone help?

⟐ Answered January 11, 2026 at 17:36 MST

1995-2005 Blazer: Why won't my AC send signal to the AC Compressor?

Sat, 02 Sep 2023 00:15:32 -0700

EDIT3: Since I replaced the switch, I’m led to believe that the only other things it could be are either the AC accumulator or the HVAC actuator. The actuator failing is a common issue with this type of car according to online resources, however, that is the more expensive of the two options. I may have to replace the accumulator to see if that works since it only costs $30. If there are any more suggestions or ways to properly diagnose, I’ll gladly try.

EDIT2: I replaced the low pressure switch and it still hasn’t fixed the issue.

EDIT: I just found a video where someone also bypasses the relay. This is exactly what I did, and this gentlemen seems to be having the same exact issue.

SUMMARY:

Hello. So I went to recharge the AC in my vehicle and noticed that the AC clutch wasn’t spinning at all. I did some troubleshooting, and I now think it has something to do with the computer in my car.

I checked every fuse in the car. Replaced one for my cigarette lighter, and all the rest are fine.

In the engine fuse box, there’s a AC fuse and a relay. The fuse is good, and I used a multi-meter and a 12v battery to test the relay, but just in case, I also swapped relays with the horn to make sure they both work. (They do).

Lastly I used a paperclip to bypass the relay on the fuse box, and the clutch started, which leads me to believe that the relay is not being triggered when I tell the car to turn on the AC.

The AC Compressor/Clutch
The Fuses
The Fusebox

I’m not sure what else is left to try, but it’s going to start getting hot soon, and I’d really like to have my AC working.

⟐ Answer accepted September 02, 2023 at 0:15 MST

1995-2005 Blazer: Where is my fuel pressure regulator?

Thu, 05 Mar 2026 20:18:03 -0700

Where is my fuel pressure regulator?

⟐ Commented March 05, 2026 at 20:18 MST

1995-2005 Blazer: Engine stall and rough idle after cap and rotors replacement

Wed, 01 Oct 2025 13:34:49 -0700

Cap and rotor replace and tune

⟐ Commented October 01, 2025 at 13:34 MST

1995-2005 Blazer: Why does it make a clunking noise when I drive

Sat, 15 Mar 2025 16:51:29 -0700

Why does the rear tires make a clunking noise when it goes forward

⟐ Answer accepted March 15, 2025 at 16:51 MST

1995-2005 Blazer: Why is it taking off in 3rd and won’t shift but will go in reverse and

Tue, 06 Jan 2026 09:28:23 -0700

how to fix just happened and key won’t go back all the way with out pressing buttom

⟐ Edited by author January 06, 2026 at 9:28 MST

1995-2005 Blazer: My don’s start after rain or is cloudy

Fri, 12 Dec 2025 08:11:36 -0700

Why my car doesn’t start after a rain or she is cloudy

1995-2005 Blazer: Is there a oil plug on the side of the block to prime oil in block

Thu, 27 Nov 2025 07:41:55 -0700

I'm adjusting the valves and I can't get the passenger side cylinder head to prime with oil causing spungy lifters.Why is that?

1995-2005 Blazer: Heater blower isn't working

Tue, 21 Oct 2025 00:17:17 -0700

Heater does blow any air

1995-2005 Blazer: Passlock 2 bypass with resistor

Wed, 18 Sep 2024 06:39:17 -0700

Any step by step with pics. on bypassing with resistor 2000 blazer.

1995-2005 Blazer: While driving or walking, it goes a short distance, disappears in the

Sun, 01 Oct 2023 13:26:27 -0700

Please help me fix the problem

⟐ Commented October 01, 2023 at 13:26 MST