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Old 01-01-2021, 03:25 PM   #1
BigBird05
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Inside rear view mirror

Does anybody have the wiring diagram for a 2003 rear view mirror?
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Old 01-01-2021, 10:45 PM   #2
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Re: Inside rear view mirror

What options on your mirror?
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Old 01-02-2021, 10:31 AM   #3
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Re: Inside rear view mirror

2003 Yukon with comp and temp.
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Old 01-02-2021, 06:38 PM   #4
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Re: Inside rear view mirror

Tomorrow or Monday I'll be back home for more than 2 minutes.
I'll dig up the diagrams in the 05 service manuals. Assuming the Pickup trucks are the same as the SUV in this regard. Not everything is the same between them. Helm lists separate service manuals for the SUV and the Pickups.
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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 01-07-2021, 12:24 PM   #5
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Re: Inside rear view mirror

here you go
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Old 01-08-2021, 10:37 AM   #6
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Re: Inside rear view mirror

Thanks. So I hooked up the + and - the ambient air sensor and it didn't light up. Any ideas?
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Old 01-12-2021, 11:43 AM   #7
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Re: Inside rear view mirror

Recheck your connections.

If the schematics are correct...

6 should run to the A terminal on the air temp sensor.
7 should run to the B terminal on the air temp sensor.

8 should be chassis ground.
13 should be ignition power.

Power and ground are easy.
You can ohm out the temp sensor wires with long test leads the proper probe terminals to make sure each side connects from the mirror all the way to the sensor.
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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 01-12-2021, 01:44 PM   #8
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Re: Inside rear view mirror

whops missed the initial follow up, but to hatzie's comment he is spot on. And the diagram is for an 03 yukon.
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Old 01-12-2021, 09:07 PM   #9
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Re: Inside rear view mirror

I have it on the bench right now. I'm going to plug it into the Yukon wiring connector and see if it lights up. If It does then I will buy a new ambient temp sensor.
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Old 01-16-2021, 11:17 AM   #10
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Re: Inside rear view mirror

Quote:
Originally Posted by BigBird05 View Post
I have it on the bench right now. I'm going to plug it into the Yukon wiring connector and see if it lights up. If It does then I will buy a new ambient temp sensor.
Was the mirror dead or something else going on?

These are Gentex mirrors made for GM.
The sensor polarity may actually make a difference. I'd be sure to run Sensor plug B to mirror 6 and Sensor plug A to mirror 7.
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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 01-16-2021, 02:07 PM   #11
hatzie
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Re: Inside rear view mirror

GM service manual captures.
The GM wiring diagram should be valid for the 03-05 trucks. Maybe the 06 & 07 classic as well.
The DF5 ambient temp sensor symbol is for a regular thermistor.

These are connector end views for the mirror and the ambient temp sensor.

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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.

Last edited by hatzie; 01-17-2021 at 11:58 AM.
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Old 01-17-2021, 02:55 PM   #12
BigBird05
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Re: Inside rear view mirror

Thanks everybody for the help. After bench testing 3 mirrors and not getting them to work. I went out an plugged them into my Yukon. All 3 still don't work. Guess I'll get another on my next trip to the salvage yad.
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Old 01-17-2021, 03:32 PM   #13
hatzie
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Re: Inside rear view mirror

The Gentex mirrors have issues with cracking solder joints on several of the larger SMT resistors just like the instrument clusters on these trucks.

Gentex used a super thin PC board similar to the thin PC boards that GM used in the digital climate control heads.
If you don't have significant experience with electronics repairs of this type I would not start with one of these mirrors. You can easily make an un-repairable mess.

Before you pitch them I might actually be interested in repairng them.
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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 01-26-2021, 12:05 PM   #14
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Re: Inside rear view mirror

They arrived yesterday.
I always do a visual check under the microscope for obvious problems.
First the power regulation & microchips. Then I check the display interconnect, SMT resistors, and harness plug connections to the PC boards for cracked solder joints.

I opened all three of them up last night to take a quick look and take some pictures with my microscope camera that arrived yesterday as well. It works very well. Now I can take pics to show what I've found when looking at boards.
The components in the pictures look big but I can't read most of the markings without my microscope.
I won't have time to sit down and work on them til Saturday or Sunday.

The Compass/Temp mirror has a cratered TO252 78M05 SMT 5v linear voltage regulator. Usually this comes from reverse polarity on the power input or shorts on the output legs.
You can see the hole where the magic smoke escaped from the damaged 78M05 regulator.
I'll have to investigate to see what blew it up before replacing it.
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This is an undamaged 78M05 on one of the other mirror boards.
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The two Onstar temp compass mirrors have cracked solder joints on resistors and most of the display board interconnect header joints as well as several cracked joints on the connector for the cab harness... Business as usual.
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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.

Last edited by hatzie; 01-26-2021 at 08:03 PM.
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Old 01-26-2021, 12:58 PM   #15
hatzie
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Re: Inside rear view mirror

Name:  20210126_114554[1].jpg
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Size:  77.7 KB

This is one of the mirrors opened up with the compass under the mount cover disconnected.

The cab harness disconnect terminal numbers;
  • Lower Right terminal 1
  • Lower Left terminal 9
  • Upper Right terminal 8
  • Upper Left terminal 16

**EDIT**
I decided the trailer wheel bearings could wait til it's somewhat above 5F.
I re-flowed the display daughterboard interconnect on both sides, all 16 pins on the main connector, and various resistors.

This is my power pak hookup using GT150 terminals. Set 250MA current limit 12.6V from my bench supply. Ground to terminal 8 & Hot to terminal 13.
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This is the mirror powered up without my calibrated resistors on the temp sensor lines.
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Size:  46.8 KB
__________________
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; 01-26-2021 at 04:53 PM.
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