Where might I fix rear window defrost & heated right mirror. Some connector?

Asked by Feb 21, 2017 at 07:17 PM about the 2008 Chevrolet Silverado 1500 LT1 Extended Cab 4WD

Question type: Maintenance & Repair

2008 1500 Silverado extended cab 4x4, Z71. Has rear window defrost, not
working. I put on heated mirrors. Left one works. But rear window defrost and
right mirror do not. Continuity on both checks out. No power. Is there a
connector or common wiring point that would disrupt only the rt mirror and
defrost?  Thx.

9 Answers

73,055

There would be relays to check that are in one of the fuse boxes.

1 of 1 people found this helpful.

Thanks. Relays good, fuses too. Seems neither would produce loss of only one heated mirror and rear defog. Could switch on dash have a connector behind it that separates into three directions? Seems some junction would be most likely to cause this type of issue.

Or is perhaps the problem the switch and connections in the HVAC control panel? It seems the only place that could cause these two systems to fail. I cannot find any other location that the right heated mirror and rear defogger systems would intersect.

73,055

Makes sense. May just want to move some connectors around to make a better contact. I've seen where wiring looks new but for some reason not make a connection. Always at the connectors.

1 of 1 people found this helpful.

Thanks. I just this morning pulled panel, reset connectors. No change. I haven't found color codes yet for specific circuit wires, so I don't know which connector feeds the rear defog/htd mirrors. Anyone know? The full HVAC panel is a bit costly to replace only to find out if it is the issue. If I know which connector, I'll do some cleaning etc. to try to improve circuit. (left to right 1 is empty, 2 beige, 3 black, 4 brown).

73,055

You would want to test that HVAC control panel with a digital multi meter. Like you said it would be costly to just try one.

1 of 1 people found this helpful.

Thx. My meter doesn't have tiny probes, I'll check around for one. rh

Update: black connector contains the heated mirrors and rear defog circuits - also temp and likely other. All pins good. All connectors tight. Cleaned with electronic cleaner. No change. Not a bit of power goes through circuits.

73,055

Finding a problem like this is a head ache. Follow the flow of power.

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 10,560 nationwide Silverado 1500 listings and the tools to find you a great deal.

Postal Code:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    2,450
  • #2
    Rowefast
    Reputation
    1,960
  • #3
    Andrew Olsen
    Reputation
    1,670
View All

Related Models For Sale

Used GMC Sierra 1500
229 Great Deals out of 10,278 listings starting at $2,995
Used Ford F-150
433 Great Deals out of 9,102 listings starting at $922
Used Dodge Ram 1500
60 Great Deals out of 533 listings starting at $2,995
Used Chevrolet Silverado 2500HD
9 Great Deals out of 831 listings starting at $899
Used Toyota Tundra
18 Great Deals out of 783 listings starting at $4,499
Used Toyota Tacoma
32 Great Deals out of 797 listings starting at $5,995
Used Chevrolet Tahoe
7 Great Deals out of 622 listings starting at $6,871
Used Chevrolet Colorado
13 Great Deals out of 1,340 listings starting at $4,499
Used Ford F-250 Super Duty
20 Great Deals out of 796 listings starting at $6,000
Used Ford Mustang
9 Great Deals out of 1,179 listings starting at $2,995
Used Dodge Charger
77 Great Deals out of 825 listings starting at $1,999

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
12 Great Deals out of 7,493 listings starting at $100
2016 Chevrolet Silverado 1500 For Sale
18 Great Deals out of 180 listings starting at $22,980
2015 Chevrolet Silverado 1500 For Sale
33 Great Deals out of 435 listings starting at $22,470
2014 Chevrolet Silverado 1500 For Sale
34 Great Deals out of 419 listings starting at $13,900
2013 Chevrolet Silverado 1500 For Sale
17 Great Deals out of 201 listings starting at $12,980

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.