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Old 07-01-2020, 11:53 AM   #1
sdkid
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04 Chevy 1500 A/C issue

Has the electronic panel with dual zone control. Driver side goes full heat sometimes. Can someone tell me the location of the actuator for the driver side?
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Old 07-02-2020, 02:55 PM   #2
hatzie
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Re: 04 Chevy 1500 A/C issue

Driver side is on top of the heater box.
You have to pull the dash cover and the duct that passes over the top of the heater box.

The passenger side is a lot easier. Just pull the beauty cover and the actuator motor is right on the bottom of the heater box.

Have you tried resetting the HVAC controller?
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1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
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Old 07-02-2020, 03:48 PM   #3
Bob B.
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Re: 04 Chevy 1500 A/C issue

Hold it, I think the left (driver's side) temp actuator is the one on the bottom of the HVAC case. BTW, sometimes you can get the top temp. actuator off by removing the radio and reaching in. By all means try the reset first, that often fixes the problem.
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Old 07-06-2020, 04:32 PM   #4
sdkid
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Re: 04 Chevy 1500 A/C issue

How do I do the reset?
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Old 07-06-2020, 06:59 PM   #5
hatzie
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Re: 04 Chevy 1500 A/C issue

03-07 AUTOMATIC HVAC with the digital display.
  1. Start the truck and set the HVAC controls to AUTO.
  2. Shut off the truck
  3. Pull the HVAC/ECAS fuse in the underhood fuse relay block.
  4. Leave the fuse out for 2 full minutes.
  5. Re-install the fuse.
  6. Start the truck and wait til the HVAC finishes calibrating all the motors. It'll take a couple minutes.
  7. Switch the truck off for full 15-20 seconds.
  8. Restart the truck and check that it works now.


__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.

Last edited by hatzie; 07-06-2020 at 07:29 PM.
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Old 07-08-2020, 10:59 PM   #6
sdkid
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Re: 04 Chevy 1500 A/C issue

Thank you Hatzie!!!
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Help somebody...If you can....VanZant

We're not wrong, we're not sorry, and its probably gonna happen again. That's the truth about men.
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Member# 13924
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'68 c10 250/4spd
'68 c10 no eng/trans fac ps/pb/ac/at
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Old 07-09-2020, 04:34 PM   #7
hatzie
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Re: 04 Chevy 1500 A/C issue

Did it work for you?
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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Old 07-11-2020, 11:08 AM   #8
sdkid
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Re: 04 Chevy 1500 A/C issue

Seemed ok until this morning. I've had it full cold. This morning I turned it to 70ish, then it went full hot on the driver side.
__________________
I think the world needs a drink...

Help somebody...If you can....VanZant

We're not wrong, we're not sorry, and its probably gonna happen again. That's the truth about men.
Tracy Byrd

Member# 13924
'70 c10, 350/350
'68 c10 250/4spd
'68 c10 no eng/trans fac ps/pb/ac/at
(future father/sons project)
'48 Chevy Loadmaster
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Old 07-11-2020, 03:22 PM   #9
hatzie
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Re: 04 Chevy 1500 A/C issue

Just looked at the service books. I was incorrect. The RH blend motor is on top of the airbox.
The LH motor is on the bottom of the HVAC box under the beauty cover and it's darn easy to R&R.
I've read conflicting information. I trust GM.

Pull the heater fuse referenced above before you remove the motor and don't plug it back in til the new one is installed and you're ready to calibrate it.

Re-cal the system after you finish installing the motor.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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Old 07-15-2020, 06:32 PM   #10
sdkid
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Re: 04 Chevy 1500 A/C issue

Thank you sir. I will update you.
__________________
I think the world needs a drink...

Help somebody...If you can....VanZant

We're not wrong, we're not sorry, and its probably gonna happen again. That's the truth about men.
Tracy Byrd

Member# 13924
'70 c10, 350/350
'68 c10 250/4spd
'68 c10 no eng/trans fac ps/pb/ac/at
(future father/sons project)
'48 Chevy Loadmaster
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