Mechanics

AXLE ASSEMBLY VS WHEEL BEARING HUB ASSEMBLY

2004 GMC Envoy

Drive Train Axles Bearings problem
2004 GMC Envoy 6 cyl Four Wheel Drive Automatic 100000 miles

The local mechanic just quoted me $700 to replace one of teh above two items, saying the part is $450+. I look on line (autohaus, etc) and find it for $80.
I know my way around cars and tools well enough to do this myself I think. Am (should) I replacing both of these items. Mechanic said bearings, so I am leaning towards hub assembly, but will do both if warranted.
Avatar
PFenney
September 8, 2010.



So are you talking about the axles or the bearing?Also front or rear?Let me know.

Saturntech9
Sep 8, 2010.
It is front.
I am unsure if he was refering to the axles or bearings, will get clarification when I p/u vehicle tomorrow

Tiny
PFenney
Sep 8, 2010.
Sounds good let me know what he say's is bad and we will go from there.

Saturntech9
Sep 8, 2010.
Is what is shot on the front of my Envoy. Difficult to replace?

Tiny
PFenney
Sep 9, 2010.
Looks like my previous omitted the words.&Quot; axle hub assembly" I see a variety of price points from a cheap " Replacement" at around $60 to an AC Delco at $300. There clearly are some quality differences. Recommendation?

Tiny
PFenney
Sep 9, 2010.
The cheapest i saw one was for 117 for a duralast at auto zone there timken one was 200 which is a good brand but they have a timken for 160 and a acdelco one for 248 at http://www.rockauto.com plus i have a 5 percent off discount code for them.I have gotten a lot of part's from them there pretty price's on most of there stuff.I would go with timken.It's not a bad price at 160 and it's good quality if you decide to get it from rock auto let me know and i will give you the 5 percent discount code.Or if you find it cheaper somewhere else that's great too.It's not that hard to do they only charge 1.5hrs labor i posted the instruction's on how to replace it for you.


http://www.2carpros.com/forum/automotive_pictures/416332_2004_gmc_envoy_front_wheel_hub_assembley_part1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/416332_2004_gmc_envoy_front_wheel_hub_assembley_part2_1.jpg



http://www.2carpros.com/forum/automotive_pictures/416332_2004_gmc_envoy_front_wheel_hub_assembley_part3_1.jpg



http://www.2carpros.com/forum/automotive_pictures/416332_2004_gmc_envoy_front_wheel_hub_assembley_part4_1.jpg



http://www.2carpros.com/forum/automotive_pictures/416332_2004_gmc_envoy_front_wheel_hub_assembley_part5_1.jpg



2004 GMC Truck Envoy 4WD L6-4.2L VIN S

Front Wheel Hub, Bearing, and Seal Replacement

Removal Procedure

1. Remove the tire and wheel center cap.

2. Remove the drive axle nut.
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Remove the tire and wheel.
5. Remove the brake rotor.

6. Disengage the wheel drive shaft from the wheel hub and bearing. Place a brass drift against the outer end of the wheel drive shaft in order to protect the wheel drive shaft threads. Sharply strike the brass drift with the hammer. Do not attempt to remove the wheel drive shaft from the wheel hub and bearing at this time.

7. Remove the ABS sensor mounting bolt from the wheel hub and bearing.
8. Remove the ABS sensor from the wheel hub and bearing.

9. Remove the wheel hub and bearing to the steering knuckle mounting bolts.

10. Remove the wheel hub and bearing from the steering knuckle.
11. Remove the splash shield from the steering knuckle.

Installation Procedure

1. Install the splash shield to the steering knuckle. Align the splash shield to the steering knuckle threaded holes.
2. Install the wheel hub and bearing to the steering knuckle. Align the threaded holes.

3. Install the wheel hub and bearing to the steering knuckle mounting bolts. Tighten the wheel hub and bearing mounting bolts to 105 Nm (77 ft. lbs.).

4. Install the ABS sensor to the wheel hub and bearing.
5. Install the ABS sensor mounting bolt to the wheel hub and bearing. Tighten the ABS sensor to the wheel hub and bearing mounting bolt to 18 Nm (13 ft. lbs.).

6. Install the brake rotor.
7. Install the tire and wheel.
8. Lower the vehicle.
9. Install the drive axle nut. Tighten the drive axle nut to 140 Nm (103 ft. lbs.).
10. Install the tire and wheel center cap.

Saturntech9
Sep 9, 2010.
The only tool I am missing is a wrench or deep socket for the drive axle nut. Is that 35 or 36mm. I seem to be dealing with metric on an American auto?

Thank you. The above is a huge help

Tiny
PFenney
Sep 9, 2010.
Everything will be metric on your car I'm not sure what size your Axel nut is you want to get a deep socket though. See if you can rent a socket at the auto parts store if you can't then buy the two sizes and return the one you don't use. Let me know how it goes.

Saturntech9
Sep 9, 2010.
Job done. Thank you so much. Needed to buy a 36mm deep socket ($20), but enjoyed getting dirt and grease under my nails again.

Tiny
PFenney
Sep 9, 2010.
Glad to hear it your welcome that's what were here for to help people fix there car's.

Saturntech9
Sep 10, 2010.