hvac

  1. jeremytn86

    Defrost only blows luke warm, not hot

    So, I have searched here, and the web, trying to find the same issue and/or an answer. I have a 99 K2500 Suburban 6.5 diesel. Front and rear heat is nice and hot. When I put it on defrost though, it is barely warm. Some backstory, I had the blower motor and resistor changed out by Midas when I...
  2. Supertex

    93 Complete A/C system replacement - Questions for gurus

    This is long, but supplying all the info is key to resolving problems, so...A/C gurus out there, please chime in. I'm sure you'll be helping more than just me. I just replaced my entire A/C system...what a headache. My system has always lost freon. Over the course of a year it would be all...
  3. Burban1998

    Heated seat switch

    The heated seat switch on my 98 suburban 1500 is broken, does anyone make a replacement? The oem one is discontinued part # is 12376804
  4. southsidesmoka

    Missed with HVAC Parts Shotgun on '99 Suburban

    To Whom It May Concern: Recently, all of the illumination in my HVAC control head died. It was still functional, but I couldn't see it at night. I figured it was my fault - I probably damaged or broke something on the backside of the old control head when I was shoving it and a fire...
  5. B

    98 K2500 - HVAC Control Module Issue

    Hey all, Long time lurker very infrequent poster, I have searched this forum and others high and low and apologize in advance if there's an answer in another thread somewhere, if there is I couldn't find it. Truck is a 1998 K2500 ECLB, originally a 454 truck but has a 6.0 swapped in. 4l80e...
  6. S

    Need help diagnosing blower motor problems.

    I'm getting wrapped around the axle trying to figure out why my blower motor is not working. I replaced the blower motor and resistor 2 months ago. It recently stopped working completely so I started poking around. When the 12v terminal on the motor is jumped, nothing. When the ground terminal...
  7. dudeinthepnw

    Does anyone have the hvac schematic for the control panel? (1990 2500)

    When I got the truck a few months ago, one issue it had was the radio wasn't working. I ordered a retro sound factory unit that still allowed me to have aux etc but also still look factory. I removed the factory stereo and the CMD (I think that's what it's called, the part under the dash that...
  8. nhelmar19

    Can't identify these wires

    I made a previous post about an issue I'm having with my HVAC controls where the temp and vent arrows are flashing. While trying to rule out issues with that I found a light green/dark green set of wires that appear to be cut and I can't find where they would be connected to. I also found the...
  9. Matthew Conley

    HVAC 15-72267 to replace 15-72266

    I have a 1995 with a bad 15-72266 HVAC board. (Has the rear defogger button). When I purchased the truck the original rear glass had been replaced with a slider. The fuse block has a 30 AMP fuse where this truck could have had a defogger. Since i dont have it any more, anyone know if i can...
  10. LoCascio_Inc

    Weak air flow on passenger side vents only?

    1998 2500 extended cab truck, now with a 1996 style 2500 dash and the accompanying upper HVAC ducting. Both dash styles have had really weak air flow on the two passenger HVAC vents near the glovebox. Driver side vents blow great hot or cold but passenger side is always kinda lame. Anyone else...
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