Question about 2005 GMC Envoy Xl

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I have a 2005 gmc envoy 6 cyl engine i notice at sitting at light the rpms drop a little and it flutters and i have a winding noise when driving and it is not a powersteering problem . what could be the problem it has 47000 miles

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Maybe time for a throttle body cleaning, make sure both the front side and back side are cleaned thoroughly. Also disconnect the battery while doing the cleaning, this will reset the computer and allow it to relearn to the cleaned throttle body.
Do you mean a whining sound? Does the sound change if you turn the wheel to the right or left? If so, it may be a front wheel bearing.

Posted on Aug 26, 2011

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Posted on Jan 02, 2017

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Hello! This is a known problem that is addressed by the following Technical Service Bulletin...Guru...saailer

Subject:Steering System Moan, Groan, Shudder and/or Vibration Type Noise During Low Speed Turning Maneuvers (Replace Steering Gear) #04-02-32-007A - (12/01/2004) Models:2004-2005 Buick Rainier
2003-2005 Chevrolet TrailBlazer, TrailBlazer EXT
2003-2005 GMC Envoy, Envoy XL
2004-2005 GMC Envoy XUV
2003-2004 Oldsmobile Bravada
Short Wheelbase Utilities Built Prior to VIN Breakpoint 52123375
Long Wheelbase Utilities Built Prior to VIN Breakpoint 56137280
This bulletin is being revised to remove the 2002 model year and add the long wheelbase utilities. Please discard Corporate Bulletin Number 04-02-32-007 (Section 02 -- Steering).

ConditionSome customers may comment on a moan, groan, shudder and/or vibration noise while making low speed turning maneuvers. Customers usually notice this condition in parking lot turning maneuvers.
Correction
  1. Diagnose the power steering concern. Refer to Symptoms - Power Steering System (SI Document ID #670351).
  2. Replace the steering gear with a newly designed steering gear. See the parts information below. Refer to Power Steering Gear Replacement (SI Document ID #742314).
Parts Information

Part Number

Description

Qty
88965356
Gear Kit, Steering
(Short Wheelbase Utilities)
1
88967181
Gear Kit, Steering
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1
Warranty InformationFor vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time
E9740
Gear Assembly, Power Steering - Replace
Use published labor operation time
E2000
Toe, Front - Adjust

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

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