Why is the Alternator gauge pegged out when the.....


Asked by Dec 04, 2011 at 07:36 PM about the 2003 GMC Yukon 4WD

Question type: Maintenance & Repair

So here is the long version, and this is really beginning to bug me pretty bad.
When starting my 03 Yukon, the alternator gauge is pegged all the way to the right.  The oil
pressure gauge is higher than normal and the speedometer gauge will be off higher or lower
and sometimes not work at all.  The Temperature gauge on the mirror works fine when all of
this is going on.  If the temp. gauge does not work, all the other problems are non existent.
And I always get a whistling noise from the radio speakers.  The radio is not the stock Bose
that should be in there.  I have had this checked out by a couple of different dealers, and they
always tell me they can't find anything wrong.  This tells me it might be quite complex.  Either
way, I want it fixed.  My 2 Cents:  I think the whole thing is tied together.  The stereo that is in
the truck now is aftermarket and was just rigged in to make it function.  At worst the
Temperature gauge in the mirror is defective and should be replaced.

3 Answers


So I received my answer from my Mechanic. and $600.00 later I have a new instrument panel!!!

and all that typeing for nothing???????

1 of 1 people found this helpful.

I guess. but what is worse is the no response!!! oh well!! maybe someone else will benefit.

Your Answer


Looking for a Used Yukon in your area?

CarGurus has 18,600 nationwide Yukon listings starting at $1,800.


GMC Yukon Experts

  • #1
  • #2
    David Boccabello
  • #3
View All

Related Models For Sale

Used Chevrolet Tahoe
626 Great Deals out of 37,230 listings starting at $795
Used Cadillac Escalade
245 Great Deals out of 11,885 listings starting at $2,995
Used GMC Yukon XL
223 Great Deals out of 12,582 listings starting at $2,500
Used Chevrolet Suburban
421 Great Deals out of 22,235 listings starting at $2,495
Used GMC Sierra 1500
889 Great Deals out of 58,970 listings starting at $1,980
Used Ford Expedition
443 Great Deals out of 19,991 listings starting at $2,500
Used Chevrolet Silverado 1500
2,170 Great Deals out of 150,273 listings starting at $1,499
Used Cadillac Escalade ESV
137 Great Deals out of 6,556 listings starting at $2,695
Used Ford F-150
2,491 Great Deals out of 220,663 listings starting at $1,222
Used Ford Explorer
823 Great Deals out of 64,326 listings starting at $2,000
Used Jeep Grand Cherokee
790 Great Deals out of 73,450 listings starting at $500
Used Dodge Durango
222 Great Deals out of 24,358 listings starting at $1,500
Used Toyota 4Runner
302 Great Deals out of 30,369 listings starting at $2,995
Used Nissan Armada
89 Great Deals out of 9,766 listings starting at $3,750

Used Cars For Sale

2018 GMC Yukon For Sale
6,968 listings starting at $40,345
2017 GMC Yukon For Sale
38 Great Deals out of 2,017 listings starting at $35,999
2016 GMC Yukon For Sale
46 Great Deals out of 1,280 listings starting at $34,574
2015 GMC Yukon For Sale
80 Great Deals out of 2,387 listings starting at $26,500
2014 GMC Yukon For Sale
20 Great Deals out of 359 listings starting at $15,000

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.