HVAC Controller
Used HVAC controller.
Original HVAC controller; burnt out lighting.
New controller installed.
A week later, my drive to work was colder than normal; the right side (of the dual climate control) was cold. It would randomly go to heat, then cold, then heat etc. I did some
research and a common problem is the heat actuator (there is a left and a right). I wasn't convinced and found a few video's online and one mentioned the controller. So, the next
day on my drive to work, I waited for the heat to stop. When it did, I wiggled and moved the right heat lever, and I had heat. The wiggling trick only lasted a few days. It now switches
from hot to cold on its own leaving me with no control at all.
Tech
Diagnosing Electronic Climate Control Actuators
https://www.motor.com/magazine-summary/diagnosing-electronic-climate-control-actuators-april-2000/
| Climate
Control Actuators: System Type |
| Smart Head, Smart Actuator. This type of system has a logic circuit in both the control head and the actuator. The control head outputs a voltage representing the desired door position. The actuator contains a logic circuit that interprets that voltage and powers the motor to move the door to the corresponding position. The GM C-67 system found in W-body cars uses this design. |
Video: Fixing AC Temperature Control On My 2002 Pontiac Grand Prix
Video: 1A Auto Parts: How To Install Replace AC Heater Temperature Actuator 2000-05 Chevy Monte Carlo
Video: 04-08 Pontiac Grand Prix - Repair Or Replace HVAC AC Blend Mode Valve Actuator
Video: ACDelco Tech Connect - HVAC Actuator Reset
How To Replace A Blend Door Actuator
| Blend Door Actuator |
|
| MFG |
PART
# |
| AC Delco |
1572647 |
| AC Delco | 1573627 |
| Four Seasons | 37538 |
| GDP | 1712066 |
| GM | 52487750 |
| SKP | SK604107 |
| Standard | F04023 |
| Ultra-Power | 604107 |
Fits Model Year: 2001, 2002, 2003
Dash Control Unit
Heater Climate Temperature Control Dual
Heater A/C Dual Zone Climate Control Part Switch AC
A/C Heater Climate Temperature Control New
Heater A/C Climate Control
| HVAC CONTROLLER |
|
| MFG |
PART
# |
| GM |
10308119 |
| AC Delco | 15-72735 |
| K2618119 |
|
Breaking down the controller.
December 15, 2018
Controller #2. Got this for cheap as it was a "new return". Installed it, and the "A/C" button didn't work at all, so I returned it.
I re-installed my original controller. It now has no lights other than the ones in the "A/C"
and "DEFROST" switches, and the left temperature slider only made heat, no cold.
December 21, 2018
Controller #3. Brand new.
Everything works as it should. Finally!
June 26, 2019
A few months ago, I noticed that the dash vents were always moving some air. Then I realized that when using the A/C, it was so inefficient due to this problem,
that I had to put the fan on 4 or 5 to cool the car down. I've never used higher than 3. I thought maybe one of the actuators was faulty, but after some
internet research, the issue of vacuum came up. After learning this, I took a look under the hood and saw that the vacuum hose for the HVAC had 2 cracks
in it, right by the underhood fuse block. I didn't have any vacuum hose that size (the hose on the car is 1/8" od, 3/16" id). So, I used some shrink tube to do
a quick fix. The dash vents no longer push air in my face all the time. Props to justanswer.com for steering me in this direction.
Diagram: Behind Instrument Panel Schematic: HVAC Vacuum
If you have any comments, suggestions, or see any errors, please let me know..... cbradley@telus.net
Last updated on June 26/2019
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