Jump to content

alternator advice 2002 Yukon XL 1500 SLT

alternator

cruiser1

By cruiser1
July 20, 2017 in 1999-2013 Silverado 1500 & Sierra 1500

Recommended Posts

cruiser1

New Member

cruiser1

Posted July 20, 2017

Posted July 20, 2017

New guy, just got out of the truck and heard this high whining sound that eventually goes away as it warms up.

Truck has 303,563 so far and I hope to go at least 500,000.

I'm guessing alternator as I feel a grinding when I touch it as it makes the noise.

Original engine and most parts. Trans at 165,000 nothing else major

Senior Enthusiast

txab

Posted July 20, 2017

Posted July 20, 2017

If that's where the sound is coming from, replace it now. Rockauto is one place to look as well as a local NAPA

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Similar Content
- Weird Charging Issues. Have to Rev truck to start charging.
  
  By Pooble, November 22, 2023
  - alternator
  - battery
  - (and 2 more)
    
    Tagged with:
    
    alternator
    
    battery
    
    charging
    
    grounds
  - 3 replies
  - 1,906 views
- Alternator swap issue
  
  By Cory Warburton, April 18, 2022
  - alternator
  - grounding
  - 2 replies
  - 5,205 views
- 2005 GMC Sierra 1500 Electrical Issues
  
  By Jordan Walter, February 27, 2022
  - electrical
  - voltage
  - (and 1 more)
    
    Tagged with:
    
    electrical
    
    voltage
    
    alternator
  - 10 replies
  - 9,238 views
- GMC Sierra 2004 Alternator upgrade
  
  By Abdulla Muhsen, June 7, 2021
  - Silverado
  - Sierra
  - (and 4 more)
    
    Tagged with:
    
    Silverado
    
    Sierra
    
    alternator
    
    fan
    
    1500
    
    2004 gmc
  - 8 replies
  - 5,784 views
- 2019+ Silverado and Sierra 1500 Alternator Upgrade (Install Process) 1 2
  
  By KV14, September 12, 2020
  - alternator
  - 16 replies
  - 35,496 views
Recently Browsing 0 members
- No registered users viewing this page.
Forum Statistics

250.4k
Total Topics

2.7m
Total Posts
Member Statistics

342,838
Total Members

8,960
Most Online

Newest Member
ar0517
Joined 6 minutes ago
Who's Online 3 Members, 0 Anonymous, 472 Guests (See full list)

Latest Articles
- Hummer Turns 25 and GMC Brought the H2’s Yellow Back
  Wednesday at 06:04 PM
- What’s New for the 2027 GMC Yukon and Yukon XL
  Monday at 06:15 PM
- Got a “Service Door Latch” Alert? Fix It in a Minute
  July 9
- GM Recalls Cadillac VISTIQ Over Power-Folding Seats
  July 8
Posts
- give me some tips to make my truck look better
  
  By ar0517 · Posted 4 minutes ago
- GM Hard Folding Tonneau by REV review
  
  By cautious optimist · Posted 1 hour ago
  
  This is a really late reply but I just found this thread. They won't sell the hinges. I've gone 7 rounds with them. Their solution is to buy a new cover. I'm about to buy a new cover and it won't be a Bakflip. It also won't be from realtruck.com.
- 2 speed transfer case optional now?
  
  By Chuck FB · Posted 4 hours ago
  
  Yes, and also pulling heavy trailers or a large camper up steep grades as well as descending grades such as the more rustic off road camping locations and using engine braking with that low gearing as well as soft ground can just suck the power . I realize pickups these days tend to have an over all lower first gear ratio compared to automatic transmission pickups from years back so that has helped a lot in its ability in high range but there comes a point if in four wheel drive the torque runs out at the wheels, certainly with a gas engine. They don't put two speed transfer cases on pickups for a cool factor, they have a function if one needs that massive torque to the wheels that high range can't deliver.
- Grumpy Bears 2015 Silverado 2WD
  
  By Grumpy Bear · Posted 4 hours ago
  
  Notes 7/18/2026 3,400 miles on this batch of Mobil 1 Euro 5W40 since the GDI pump replacement. Alcohol runs very clean when ring seal is tight and the sump isn't getting hosed with fuel. Checked oil level at fill up today as is my practice and grabbed a white Kleenex to look at the color. What color? I was going to change it but.....
- 2 speed transfer case optional now?
  
  By Another JR · Posted 5 hours ago
  
  4 low is really nice on steep boat ramps.
GM-Trucks.com Clubs
- Black Truck Club
  
  Open Club · 612 members
- White Truck Club
  
  Open Club · 380 members
- Canadian Owners Club
  
  Open Club · 282 members
- Red Truck Club
  
  Open Club · 157 members
- diesel 3.0
  
  Open Club · 281 members
- Texas Owner's Group
  
  Open Club · 371 members
- NorthSky Blue Club
  
  Open Club · 118 members
- Midwest Owner's Group
  
  Open Club · 213 members
- 2015 Custom Sport Club
  
  Open Club · 5 members
- GM Snow Plowing Club HD
  
  Closed Club · 14 members
Popular Contributors
- Week
- Month
- Year
- All Time
1. 1
  
  Grumpy Bear
  17
2. 2
  
  Chuck FB
  16
3. 3
  
  newdude
  12
4. 4
  
  txab
  10
5. 5
  
  CamGTP
  8
Show More

×

Forums
Main Site
Newsroom
Road Tests
Clubs
Gallery
Activity
- Back
- All Activity
- Search
Tools
More
- Back
- Guidelines
- Staff
- Leaderboard
- Online Users

×

Create New...