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

known for torque converter failure also the sun gear known failure -----------https://www.transmissionrepaircostguide.com/gmc-envoy-transmission-problems/ ----------------https://www.reference.com/world-view/common-gmc-envoy-transmission-problems-594b656e4536f7a3

Hi, with most vehicle there may be a problem that you can identify, yours may have a few issues. I think you would benefit from a visit to a trans specalist to check the box over then go from there once that issue is sorted or discounted as the cause of problems. Your description appears complex/compound...i.e. there are possibly a few things going on at the same time

STOP USING IT NOW

You need to educate yourself--study OBD 2
Vehicle Systems

We have had check lights for 35 years,no reason
to not know about them or what to do

You do not use any vehicle with a check light or
any dash lights on,they are telling you the vehicle
has system faults, that need to be diagnosed & find
a problem to repair

It shakes,it smells-- but you keep using it,will get
very expensive, if you don't change your ways, when
it comes to motor vehicles

Get it to a dealer or the best local shop you can find

The BEST Shop-- not some highway chain store-- where
you sit for 5 hours & they do little

Unplug 02 sensor and rap it up so bang around then take it for drive

I have a '05 Envoy, 65k miles.
The engine randomly turns off. At a stop light, while making a turn.
There are no check engine lights on.
Starts right back up. Major pain at intersections.

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
(Long Wheelbase Utilities)
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

First thing to do is clean the throttle body, make sure to clean both the front side and rear side thoroughly. Also, disconnect the battery while doing the cleaning, this will reset the computer and allow it to relearn to the newly cleaned throttle body.

I just bought a 2005 envoy too. I read in the manual that the 4.6 6 cyl engine needs 7 qts total. 2 Over the normal oil change. Is it possible it wasn't low to start? I noticed when Walmart changed the oil they charged extra for the change because it needed the two extra qts. However my dip stick has oil over the full mark. Seemed strange but I haven't had any leaks and after 3k mile no change in level. Make sure you had the correct about the first time.

2004 Envoy xuv 6 cyl when I turn on the A/C the truck stalls but as long as I keep my foot on the gas it will continue to run

THE A/C DOES TAKE QUITE A BIT OF HORSEPOWER FROM ENGINE, THAT IS NORMAL AND USUALLY MORE NOTICABLE ON SMALLER ENGINES /BIG VEHICLES