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yukon denali drivetrain noise when starting

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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 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)

2007-2008 Toyota Tundra Rear Driveshaft/ Propeller Shaft Clunk/ Thunk Noise Repair Manual

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Repair Procedure 1. Confirm that the condition is the rear driveshaft clunk/thunk noise. A. Test drive the vehicle and confirm the customer’scomplaint. B. Place the transfer casein 4WDHighwiththe center differential lock ed. Remove the rear driveshaft and test drive the vehicle. Refer to the Technical Information System (TIS), 2007 or 2008 model year Tundra Repair Manual, Drivetrain -Driveshaft/Propeller Shaft-”Propeller Shaft: Propeller Shaft Assembly (for 4WD): Removal” C. Is the clunk/thunk noise eliminated when coming to a stop and/or when accelerating froma stop? •If Yes-Replace rear driveshaft (propeller shaft assembly). Go to Step 2. •If No-This TSB does NOT apply. Continue diagnosis to isolate cause of condition Repair Procedure (Continued) 2. Install the NEW driveshaft (propeller shaft) assembly. Refer to TSB DL 001-07 for the installation method for 3 joint driveshaftassemb lies on 2007 model year Tundra. Refer to TIS, 2007 or 2008 model year Tundra Repair Manual, Drivetrain -Driveshaft/Propeller Shaft-”Propeller Shaft: Propeller Shaft Assembly (for 4WD): Installation” NOTE Re-usethespacers provided under the center support bearing to ensure the proper alignment of the center support bearing. 3. Test drive and confirm that NO abnormal vibrations or shudders occur while driving, and that the driveshaft clunk/thunk noise is eliminated.

2000 Audi A6 OIL PAN (A4 And A6) Removal And Installation Manual

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OIL PAN(A4 & A6) Removal (Lower Pan- A4 & A6) 1. Disconnect negative battery cable. 2. Remove engine noise insulator (undercover). See Fig. 12 . Drain engine oil. 3. Unbolt left and right swaybar stabilizer bracket bolts (4) from mounting bracket. See Fig. 98 . Lower swaybar stabilizer not more than 10cm (3.94 INCHES) and secure with heavy wire. 4. If vehicle is equipped with automatic transmission, unbolt oil cooler pipe (line) bracket from right side oil pan. 5. Remove lower oil pan. To install oil pan (lower), see INSTALLATION (LOWER OIL PAN- A4 & A6) . Installation (Lower Oil Pan- A4 & A6) 1. Ensure oil pan surfaces are clean and dry. Remove residual sealant from oil pan, if necessary, with hand drill and plastic brush instead of a flat scrapper. See Fig. 99 . Install gasket. 2. Install 2 bolts diagonal to each other (to hold up pan). Install the rest of the bolts and hand tighten. 3. Starting at center and moving outward, tighten lower oil pan to upper oil pan bolts to 10 N.m (89 INCH lbs.). Tighten oil pan drain plug 30 N.m (22 ft. lbs.). Wait 30 minutes before filling with engine oil. Tighten all bolts to specification. See TORQUE SPECIFICATIONS . 4. To complete installation, reverse removal procedure. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING . Removal (Upper Oil Pan- A4 & A6) 1. Disconnect negative battery cable. Remove oil dipstick. Unbolt oil dipstick tube at front of cylinder head. Remove oil dipstick tube. 2. Remove engine noise insulator (undercover). See Fig. 12 . Drain engine oil. 3. Move lock carrier into service position. See LOCK CARRIER . This will allow servicing of front engine components and facilitate removal of oil pan. 4. Open coolant expansion tank cap, drain cooling system at radiator. Open the coolant pump bearing housing drain plug. Located at bottom of block near transmission bell housing, drivers side of vehicle. See Fig. 32 – Fig. 33 . If vehicle is equipped with automatic transmission, unbolt oil cooler pipe (line) CAUTION: Wear eye protection NOTE: Obtain radio code before disconnecting battery. For help in identifying components and component locations, refer to illustrations Fig. 108 -Fig. 109 . NOTE: If engine is out of car, ensure oil pan is aligned with cylinder block on flywheel side. 2000 Audi A6 1998-02 ENGINES’ ’2.8L V6 30-Valve 2000 Audi A6 1998-02 ENGINES’ ’2.8L V6 30-Valve bracket from right side oil pan. 5. Position Engine Support (10-222A) with (10-222A/3) engine support adapter, or equivalent, on bolted flanges of fenders. Connect support bracket to front and rear engine lifting eyes. Lift up engine as far as possible. DO NOT use excessive force to raise engine. 6. Cut tie wraps and open bracket supporting starter wiring. See Fig. 97 . Disconnect electrical connection at starter.

HONDA Accord V6, Odyssey, Pilot Idle Vibration or Harsh Shifting Repair Manual

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SYMPTOM There is a vibration at idle or harsh engagement when shifting the transmission between between Park, Drive, and Reverse. PROBABLE CAUSE The front hydraulic engine mount may have deteriorated and torn. PARTS INFORMATION Front Engine Mount Assembly: 1998-02 Accord V6 – P/N 50810-S87-A82, H/C 7981657 1999-04 Odyssey – P/N 50800-S0X-A04, H/C 7978927 2003-05 Pilot – P/N 50800-S3V-A82, H/C 7984560 WARRANTY CLAIM INFORMATION In warranty: The normal warranty applies. Failed Part: P/N 50810-S87-A81 H/C 5438593 Defect Code: 01102 Symptom Code: 04501 Skill Level: Repair Technician Out of warranty: Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work. DIAGNOSIS 1. Bring the engine up to operating temperature, and fully apply the parking brake. 2. Have an assistant view the top of the front engine mount while standing to the side of the vehicle. Shift the transmission to Drive. With your foot firmly on the brake pedal, quickly depress the accelerator pedal and release it. Your assistant should look for contact between the top of the engine mount and the bottom of the front engine mount bracket, and listen for noise from that area. REPAIR PROCEDURE 1. Drive the vehicle onto a lift, but do not raise it. 2. Odyssey – Remove the intake manifold cover and the front ignition coil cover: •See page 9-4 of the 1999-04 Odyssey Service Manual. •Online, enter keyword INTAKE , and select Intake Manifold Removal and Installation from the list. 3. Odyssey – Remove the radiator cover: •See page 10-16 of the 1999-04 Odyssey Service Manual. •Online, enter keyword RADIATOR , and select Radiator and Fan Replacement from the list