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AC/gauges/wiper/cruise control not working

Tiny
FOUAD ABDULLAH
  • MEMBER
  • 2005 CHEVROLET ASTRO
  • 4.3L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 172,000 MILES
Parked the car normally next day non of the above working, still the car running driving normally.
in gauges only speedometer working the rest are off and A/C with wiper also .
checked all the fuses with the light screw all are in good condition still no electric coming to the box under the steering wheel.
thanks in advance.
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Thursday, October 8th, 2020 AT 6:02 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

There are fuses under the hood which power to the ignition switch and then to the instrument panel fuse box. I need you to recheck the ignition B fuse under the hood. See the attached schematics which show power flow and location of the fuses. If there is no power to the inside fuse box, either one if these fuses is bad, there is an open circuit, or the ignition switch is bad.

Check this and let me know what you find.

Joe
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Thursday, October 8th, 2020 AT 4:47 PM
Tiny
FOUAD ABDULLAH
  • MEMBER
  • 5 POSTS
Hi Joe, hope my email finds you well.
Will check it once I get back to the car.
Most appreciation for your respond. Thanks a lot brother.
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Friday, October 9th, 2020 AT 8:53 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

You are very welcome. Let me know what you find.

Take care,
Joe
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Friday, October 9th, 2020 AT 9:19 PM
Tiny
FOUAD ABDULLAH
  • MEMBER
  • 5 POSTS
Hello,

i changed the fuse even though it was not broken and gauges went back to normal.
But still the A/C not working! I checked all the fuses up and down nothing appears to be wrong?
Thanks a lot for your help most appreciated.
Have a great day sir.
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Sunday, October 11th, 2020 AT 8:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Is there power to the fuses?

Joe
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Sunday, October 11th, 2020 AT 5:41 PM
Tiny
FOUAD ABDULLAH
  • MEMBER
  • 5 POSTS
Hi Joe how are you doing today?
Yes dear there is power in all the fuses, the rear A/C is working but not the front one.
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Sunday, October 11th, 2020 AT 10:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

if the blower motor isn't working, here are the diagnostics for testing for the problem. The attached pics correlate with the directions.

________________________________

2005 Chevy Truck Astro Van 2WD V6-4.3L VIN X
Blower Motor Inoperative
Vehicle Heating and Air Conditioning Testing and Inspection Symptom Related Diagnostic Procedures Symptoms - HVAC System - Manual Blower Motor Inoperative
BLOWER MOTOR INOPERATIVE
BLOWER MOTOR INOPERATIVE

TEST DESCRIPTION

Steps 1-3

pic 1

Steps 4-8

pic 2

Steps 9-16

pic 3

The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for blower motor operation in any speed setting.
3. This step tests for voltage at the blower motor.
4. This step tests for a possible open in the blower motor resistor assembly ground circuit.
5. This step tests for output voltage from the blower motor switch.

____________________________________

Let me know if this helps.

Joe
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Monday, October 12th, 2020 AT 6:11 PM
Tiny
FOUAD ABDULLAH
  • MEMBER
  • 5 POSTS
Hi Joe, hope my email finds you well.
Our last conversation about the A/C fan blower worked, the blower is jammed after I tested the fuse and the wiring.
But once I replaced the blower the gauges fused (which changed earlier, the image) fried.
I changed it again from 40amp to 50amp also fried I replaced it with 60amp ( I need that A/C it's little hot around here) still hanging there from yesterday. But i`m afraid it will effect something else.
Thanks and regards brother.
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Monday, October 19th, 2020 AT 10:19 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

Please don't increase amperage. It can lead to a fire or other damage. Stick with the 40 amp.

Does the fuse blow as soon as you turn the key to the on position? If it does, remove fuse 12 in the under dash fuse box. We need to determine where there is a short. By removing this fuse, we eliminate the heater/ac circuit. If it doesn't blow, then we need to check between fuse 12 and the unit.

Let me know.
Joe
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Monday, October 19th, 2020 AT 7:41 PM

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