Question about 2000 GMC Envoy

1 Answer

2000 envoy my heat was working but it made a loud whistling noise now it wont comeon at all hodo u tighten hose

Nothing

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • GMC Master
  • 1,049 Answers

Not an easy fix - sounds like either a heater/AC plenum control diaphragm started leaking, or a vacuum hose to one of them has popped off at the actuator or at the heater control, or the vacuum line developed a leak somewhere between an actuator and the heater control or the engine. You can try to pin down by checking airflow out of the defroster, ac and heater vents - if airflow is normal in each position, the problem is probably the heat/cool control actuator, the line from it to the heater control, or the heater control itself.

Posted on Nov 25, 2014

Ad

3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
  • 114 Answers

SOURCE: high pitch whistling noise in engine compartment of 2005 envoy

There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.

Posted on Mar 22, 2009

scottyoung56
  • 91 Answers

SOURCE: 2005 GMC Envoy - there is a whistling noise in the

TURN IT OFF OR PULL THE FUSE FOR IT

Posted on Aug 08, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2000 mercury grand marquis and there is loud whining noise that sounds like its coming from the air filter hose . What could this be?


Have you removed air filter housing cover and checked condition of your air filter ? If so, then remove air housing and hoses up to the throttle and see if noise is still there.
You may have loose intake clamps, check all and tighten.

Nov 08, 2016 | 2000 Mercury Grand Marquis

1 Answer

Blend door must be stuck open. Loud whistling noise at 60mph and higher coming through dash. Very loud. 2004 GMC envoy


Take out the cabin air filter that is in the plenum behind the glove box. This will lessen the noise but you should get the unit serviced soon.

Jun 17, 2015 | 2004 GMC Envoy

1 Answer

Whistle noise inthe front of the engine of bmw z3 2000 2.3


a leak in a hose or a bearing on a motor

Feb 18, 2012 | 2000 BMW Z3

3 Answers

There is a whistling noise when i let off the accelerator but it stops as soon as i accelerate again. It does happen at idel


Check vacuum hoses in area where you think it's coming from, for being disconnected or cracked.

Mar 27, 2009 | 2000 Jeep Cherokee

3 Answers

High pitch whistling noise in engine compartment of 2005 envoy


There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.

Mar 22, 2009 | GMC Envoy XL Cars & Trucks

2 Answers

Loud whistle noise


Check your power steering fluid reservoir.

Mar 07, 2009 | 2000 Land Rover Range Rover

1 Answer

Whistle Noise


Check your air intake manifold hose if is crack this cause whistle noise replace the hose.

Feb 02, 2009 | 1996 Toyota Previa

2 Answers

Loud wizzing/whistling noise


try and look at the belts, if they are wore out replace them

Oct 26, 2008 | 1995 Nissan Pathfinder

Not finding what you are looking for?
2000 GMC Envoy Logo

77 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

Marvin
Marvin

Level 3 Expert

85178 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...