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Chevrolet Tahoe, SUV
#4746 of 6471 Re: New Noise - Solved [frankf3]
Aug 22, 2004 (5:27 am)
Here is a copy of the bulletin. We have the problem on out 2000 Yukon, but the dealer never figured it out before the Yukon went out of warranty. Parking brakes have not worked since it was new.
Bulletin No.: 02-05-26-002A
Date: February, 2003
Scraping Noise From Rear Of Vehicle
(Replace Parking Brake Shoe Kit and Clean Drum In Hat Rotor)
2002-2003 Cadillac Escalade, Escalade EXT
1999-2003 Chevrolet Silverado 1500 Series Pickups
2000-2003 Chevrolet Suburban, Tahoe 1500 Series Models
2002-2003 Chevrolet Avalanche 1500 Series Models
1999-2003 GMC Sierra 1500 Series Pickups
2000-2003 GMC Yukon, Yukon XL 1500 Series Models
This bulletin is being revised to add Suburban and Yukon XL models. Please discard Corporate Bulletin Number 02-05-26-002 (Section 05 - Brakes).
Some customers may comment on a scraping noise from the rear of the vehicle while driving. The noise may be intermittent.
Condition may due to the parking brake shoe contacting the drum in hat rotor without the parking brake being applied, causing premature wear on the shoe lining.
Replace the parking brake shoe and install a new designed spring clip retainer. Follow the service procedure below to correct this condition.
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Information (SI Document ID # 639546).
2. Remove the tire and the wheel. Refer to Tire and Wheel Removal and Installation in the Tires and Wheels sub-section of the Service Information (SI Document ID # 656965).
3. Relieve the tension on the park brake cables by loosening the nut at the equalizer.
4. Mark the relationship of the rotor to the hub.
5. Remove the brake caliper bracket mounting bolts.
Notice : Support the brake caliper with heavy mechanic's wire, or equivalent, whenever it is separated from it's mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.
6. Remove the brake caliper and brake caliper bracket as an assembly and support with heavy mechanic's wire or equivalent. DO NOT disconnect the hydraulic brake flexible hose from the caliper.
7. Remove the rotor retaining push nuts from the wheel studs (if applicable).
Notice :DO NOT use a hammer to remove the rotor from the hub; it may cause damage to the rotor.
Important :The rotor may not be easily removed from the hub due to a rust build up on the outside edge of the drum and hat portion of the rotor.
8. Remove the rotor from the hub. If the rotor cannot be removed from the hub by pulling on the rotor, use J 46277 rotor removal tool.
Notice :Place J 46277 between the rotor surfaces in the vent section of the rotor. DO NOT place J 46277 on the back side of the rotor surface, it may damage the rotor surface.
9. Using removal tool J 46277 on slide hammer J 6125B, remove the rotor by placing removal tool J 46277 in the vent section of the rotor at the twelve, three, six and nine o'clock positions, not necessarily in that order.
10. Clean the rust ridge from the drum portion of the rotor using a grinding stone and rotor resurfacing kit J 41013.
11. Remove the spring clip bolt (3) and retainer (2) and discard.
Important :Minimum thickness of the parking brake shoe lining in any given spot is 1.5 mm (0.06 in).
12. Measure the parking brake shoe thickness in multiple spots. Replace the parking brake shoe if the thickness is less than 1.5 mm (0.06 in). Continue with Step 14.
13. If the parking brake shoe lining is greater than 1.5 mm (0.06 in), continue with Step 19.
14. Rotate the parking brake shoe (1) out from the bottom and pull it out of the adjuster. Discard the shoe.
15. Remove the park brake shoe assembly from the vehicle by placing one of the open ends of the shoe over the axle flange and rotate the shoe until it has cleared the flange.
16. Turn the adjustment screw (1) to the fully home position in the notched adjustment nut.
17. Install the new park brake shoe assembly (1) from the parking brake shoe kit, P/N 88982875, to the vehicle by placing one of the open ends of the shoe over the axle flange and rotating the shoe until it is behind the flange.
18. Slide the shoe into the adjuster and position the shoe to the backing plate. Install the retaining spring clip (2) and bolt (3) from the parking brake shoe kit, P/N 88982875. If using parking brake service kit 88982875, SKIP Step 19.
19. Replace the retaining spring clip (2) and bolt (3) from the parking brake retaining spring clip kit, P/N 88982879.
Tighten the bolt (3) to 5 N.m (44 lb in).
20. Set the J 21177-A so that it contacts the inside diameter of the rotor.
21. Position the J 21177-A over the shoe and the lining at the widest point.
^ The parking brake adjustment screw threads should not exceed 5 mm (0.2 in) of exposed thread.
^ The clearance between the park brake shoe and the rotor is 0.6604 mm (0.026 in).
22. The parking brake adjustment screw threads should not exceed 5 mm (0.2 inch) of exposed thread.
Notice : Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the rotor and flange with the J 42450 hub cleaning kit. Failure to do this may result in increased lateral runout of the rotor and brake pulsation.
23. Use the J 42450-A to clean all rust and contaminants from the mating surface of the hub flange.
24. Use the J 41013 to clean all rust and contaminants from the inside diameter of the hat section of the brake rotor to prevent any foreign material from getting between the brake rotor and the hub flange.
25. Align the mark on the rotor with the mark on the hub and install the rotor by slowly turning the rotor while pushing the rotor towards the axle.
26. Install the caliper and the bracket as an assembly to the vehicle.
27. Perform the following procedure before installing the caliper bracket mounting bolts.
^ Remove all traces of the original adhesive.
^ Clean the threads of the bolt with brake parts cleaner, P/N 12346139 (Canadian P/N 10953463), and allow to dry.
^ Apply threadlocker, GM P/N 12345493 (Canadian P/N 10953488), or Red LOCTITE(TM) # 272, to the threads of the bolt.
Notice :Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping f
#4747 of 6471 New Noise - Solved
Aug 24, 2004 (5:15 am)
onalaska - Thanks for the info on the bulletin, this seems to have done the trick.
#4748 of 6471 1995 Yukon needs evap core, any help?
Aug 24, 2004 (5:28 am)
My A/C has an Evap leak
Has Anyone changed out an Evaporator core in the Dash. (I have a 4x4 4 dr Yukon GMC) I have the GM instructions and want to DIY.... are there any special tools...? any stumbling-blocks?
I'll get recharged proffessionally later.
I've only done a heater core on a older car. Any help is appreciated!
#4749 of 6471 Re: ianshaw - Let me know what you think! [juice22]
Aug 25, 2004 (1:47 pm)
I have a 2001 Tahoe that I am having the same problem with. However, we are out of the warranty period (has 44K, but only 2.5 years old). GM made us pay $250 to fix the headlights once already- ours started out flickering...they told us they couldn't duplicate the problem and then two months later, they went completely out. GM covered the part (multifunction switch) but we got stuck with the labor (over $200). Now 2 months later, the headlights are flickering again, and they are sparatically not turning on (sometimes we don't even realize they are not on). Very dangerous. They are telling us that they can't duplicate the problem and there are no codes so they can't do anything. I don't know what to do. I don't feel safe driving at night because I don't know when they will go out again. Anybody have any suggestions on what I should do?
I'm curious - What happened with the arbitration and what year and how many miles did you have on it?
#4750 of 6471 '04 Tahoe LS...hole in dash?
Aug 26, 2004 (3:05 pm)
Hi everyone...just wondering if anyone knows what the square opening on lower half of dashboard is for...I have the bench seat...thought maybe it's access for console...any thoughts?
#4751 of 6471 Re: '04 Tahoe LS...hole in dash? [bftman]
Aug 27, 2004 (3:57 am)
You mean the little cubby to the right and below the HVAC controls? That's where the airbag shut-off switch is located on the silverados. If it's something else, I'm not sure what you're looking at.
#4752 of 6471 Re: '04 Tahoe LS...hole in dash? [bftman]
Aug 27, 2004 (4:06 am)
I have an '02 Denali and an '05 Silverado with a bench seat. That lower part of the dash is where the console would run into.
#4753 of 6471 steering shaft fix.
Aug 28, 2004 (4:52 am)
Can someone please send me or post steering shaft fix? Is there somthing they can do other then re lube the shaft? 03 yukon. thanks btorlvyahoo.com
#4754 of 6471 Z71 Tahoe 48-Month Smartbuy (or maybe not so smart)?
Aug 30, 2004 (7:40 am)
I am considering an '04 Z71 Tahoe, loaded with the options I want, under a GMAC Smartbuy.
Inevitably in the dealer negotiations, the subject of warranty coverage beyond the factory 36-months is going to come up, and the pitch for the extended warranty to cover the remaining 12 months of the lease.
Based on owner experience on this truck, would you take the extended warranty, or take your chances? If you'd opt for the warranty, what price should I expect to pay?
#4755 of 6471 Re: Z71 Tahoe 48-Month Smartbuy (or maybe not so smart)? [dammitjim1]
Aug 30, 2004 (9:03 am)
I never buy extended warranties. Odds are in your favor.