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2005 gmc rearend noise when coasting

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1997-2005 Ford Expedition REAR AXLE NOISE REPAIR MANUAL

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5L3Z-4209-F = (9.75-Inch Ring Gear/3.73 ratio) •205-506 – Seal Protectors (Rotunda Tool) (1997-2005 F-150, 1997-2005 •W710084-S439 – Wheel End Nuts Expedition/Navigator) •390266-S100 – Differential Slave Pin Bolt (9.75? axles) NOTE 9.75 REAR AXLE HOUSINGS WERE •387426-S100 – Differential Slave Pin Bolt (8.8? REDESIGNED IN MID-1999, INCREASING FRONT axles) PINION BEARING SIZE. REPLACING RING & •4B422 – Axle Circlips PINIONS IN AN OLD-STYLE AXLE ASSEMBLY •ZC-21 – Metal Surface Cleaner WILL REQUIRE INSTALLATION OF SPACER P/N •TA-29 – Ultra Silicone Sealant YL3Z-4662-CA. SPACER IS TO BE INSTALLED BETWEEN INNER PINION BEARING AND •TA-27 – Stud and Bearing Mount Retaining COLLAPSIBLE SPACER. Compound and Sealer •F3TZ-4121-AA – Fluid Tag (REQUIRED IF FLUID THE AXLE SERVICE KITS INCLUDE THE TYPE IS CHANGED FROM FEHP DURING FOLLOWING COMPONENTS: REPAIR) •4630 – Head Bearing WARRANTY STATUS: Eligible Under Provisions Of •4628 – Head Bearing Cup New Vehicle Limited •4676 – Pinion Seal Warranty Coverage •386989-S2 – Washer (Slinger) OPERATION DESCRIPTION TIME •4621 – Tail Bearing 052303A 1997-2002 Expedition, 4.7 Hrs. 1998-2002 Navigator, •4616 – Tail Bearing Cup 1997-2004 F-150 Heritage, •4222 – Differential Bearing Cups 2004-2005 F-150: Rear •4221 – Differential Bearings Axle Noise Repair •4209 – Gear Set (includes pinion shims, pinion (Includes Time For Road nut and crush spacer) Test To Verify Concern (Beam Axle)) (Do Not Use •4209 – Instruction Sheet With 4205A Or 4205A4) NOTE 052303A 2003-2005 Expedition: 5.8 Hrs. THE KIT DOES NOT INCLUDE THE FOLLOWING Rear Axle Noise Repair ITEMS. SOME OR ALL OF THESE ITEMS WILL (Includes Time For Road BE REQUIRED TO COMPLETE THE AXLE Test To Verify Concern (Irs SERVICE, DEPENDING ON AXLE Axle)) (Do Not Use With APPLICATION/STYLE. 4010D Or 4010D4) 052303A 2003-2005 5.9 Hrs. ORDER AS NEEDED:

2004 Chevrolet TrailBlazer Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Repair Manual

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This bulletin is being revised to add model years and provide important repair information. Please discard Corporate Bulletin Number 04-08-49-015 (Section 08 — Body and Accessories). Condition Some customers may comment on a noise coming from the instrument panel cluster (IPC) while driving or on initial start-up. Instrument clusters may contain stepper motor gages that can make noise during the following conditions: Subject: Noise Coming From Instrument Panel Cluster (Replace Instrument Panel Cluster (IPC)) Models: 2003-2005 Buick LeSabre 2003-2007 Buick Rendezvous 2004-2005 Buick Rainier 2003-2006 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2005 Chevrolet Cavalier, Impala, Monte Carlo 2003-2006 Chevrolet Avalanche, Suburban, Tahoe, TrailBlazer EXT 2003-2007 Chevrolet Silverado Classic, TrailBlazer 2003-2007 Chevrolet Kodiak Models 2004-2006 Chevrolet SSR 2003-2006 GMC Envoy XL, Yukon, Yukon XL 2004-2005 GMC Envoy XUV 2004-2007 GMC Envoy 2003-2007 GMC Sierra Classic 2003-2004 Oldsmobile Bravada 2003-2005 Pontiac Aztek, Bonneville, Sunfire 2003-2005 HUMMER H2 Attention: Appropriate repair is based on vehicle build date. Use GMVIS to determine the vehicle build date. • Initial startup (gages zero/reset)

2003-2005 FORD Explorer Sport Trac Alignment – Irregular Front Tire Wear SERVICE PROCEDURE

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ISSUE Some 2003-2005 Explorer Sport Trac vehicles equipped with the Goodyear Wrangler RT/S, P255/70R16 109S AT OWL tire, may exhibit signs of feathering heel-toe wear on the inside or outside edges of the front tires . Tire noise may also be present during regular highway drive or when braking. ACTION Inspect the tires for feathering heel-toe wear. It may be necessary to rotate or replace tires and reset toe. Refer to the following Service Procedure. SERVICE PROCEDURE Zoom Sized for Print 1. Visually inspect the front tire’s inside and outside shoulder ribs (Figure 1) 2. Measure the difference in tread depth of the leading edge compared to trailing edge, of the most-worn lug (figure 2). If the average difference in tread depth between leading and trailing edge is less than 2 mm, rotate the tires . If the average difference is more than 2 mm, replace the front tires. Also inspect the rear tires and replace if necessary. 3. Ensure that the camber and caster readings are within specification

2003 GMC Truck C 1500 P/U 2WD Engine Knocking or Lifter Noise

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Engine Lubrication: All Technical Service Bulletins Engine – Knocking or Lifter Noise File In Section: 06 – Engine/Propulsion System Bulletin No.: 02-06-01-038 Date: December, 2002 TECHNICAL Subject: Engine Knock or Lifter Noise (Replace 0-Ring) Models: 2001-2002 Chevrolet Camaro 2001-2003 Chevrolet Corvette 2001-2002 Pontiac Firebird 2002-2003 Cadillac Escalade, Escalade EXT 2000-2003 Chevrolet Suburban, Tahoe 2001-2003 Chevrolet Silverado 2002-2003 Chevrolet Avalanche 2000-2003 GMC Yukon, Yukon XL 2001-2003 GMC Sierra with 4.8L, 5.3L, 5.7L or 6.0L V8 Engine (VINs V, T, Z, G, S, N, U – RPOs LR4, LM7, L59, LS1, LS6, LQ9, LQ4) Condition Some customers may comment on an engine tick noise. The distinguishing characteristic of this condition is that it likely will have been present since new, and is typically noticed within the first 161-322 km (100-200 mi). The noise may often be diagnosed as a collapsed lifter . Additionally, the noise may be present at cold start and appear to diminish and then return as the engine warms to operating temperature. This noise is different from other noises that may begin to occur at 3219-4828 km (2000-3000 mi). Cause The 0-ring seal between the oil pump screen and the oil pump may be cut, causing aeration of the oil. Correction

2004-2005 FORD F-150 FRONT BRAKE ROUGHNESS/ SHUDDER WHILE BRAKING REPAIR MANUAL

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ISSUE b. If new level (47 fin) rotors are present, Some 2004/2005 F-150 vehicles built before perform one (1) of the following: 11/29/2004 may exhibit front brake roughness and or shudder while braking. (1) If rotors are within minimum thickness specifications, machine the rotors using ACTION the Rotunda on vehicle brake lathe and Service the rack and pinion, rotors, and caliper the Rotunda adapter kit 201-R0093. assemblies as needed, based on vehicle build date Refer to the Workshop Manual, Section and current part levels installed on the vehicle. 206-00 for the correct on-vehicle brake Refer to the following Service Procedure. lathe procedure. SERVICE PROCEDURE (2) If rotors are beyond machinable thickness, the front rotors must be 1. Vehicles built prior to 8/20/2003 require the replaced. replacement of the rack and pinion assembly if it has not been replaced. Refer to Workshop 3. Install new service fix calipers. Manual, Section 206-03 and 211-02. NOTE 2. Determine if the vehicle has the old or new REPLACE CALIPERS WITH NEW SERVICE FIX level rotors (Figure 1). CALIPER ASSEMBLIES BY REMOVING THE CALIPERS AT THE KNUCKLES. THE SERVICE REPLACEMENT CALIPERS WILL BE PRE-ASSEMBLED WITH ANCHOR, SPRINGS, AND PADS. THE CALIPERS SHOULD BE INSTALLED AS A UNIT WITHOUT DISASSEMBLY. PART NUMBER PART NAME 6L3Z-2B120-A Caliper Asy (Right Side) 6L3Z-2B121-A Caliper Asy (Left Side) 5L3Z-1102-AB Rotor (4X2, 6 Lug) 5L3Z-1102-BA Rotor (4X2, 7 Lug) 5L3Z-1125-AA Rotor (4X4, 6 Lug) 5L3Z-1125-BA Rotor (4X4, 7 Lug) 6L3Z-3504-AA Steering Gear (Super Cab/Crew 4X2) 6L3Z-3504-BA Steering Gear (Super Cab/Crew 4X4) Figure 1 – Article 05-21-19 6L3Z-3504-CA Steering Gear (Regular Cab 4X2) 6L3Z-3504-DA Steering Gear (Regular Cab 4X4) a. If old level rotors, replace the front rotors 6L3Z-3C294-AA Retainer Spindle Nut and front caliper assemblies. Refer to Workshop Manual, Section 206-00 for front rotor and caliper replacement.