Clunk, Bump or Squawk when Vehicle Comes to Complete Stop

Download 1999-2000 Cadillac Escalade (Old Style) 2002-2004 Cadillac Escalade, Escalade EXT 2003-2004 Cadillac Escalade ESV 1996-1999 Chevrolet 1500 Series Extended Cab Short Box Pickup (Old Style) 1996-1999 Chevrolet 1500 Series Regular Cab Pickup and Utility Models (Old Style) 1999-2002 Chevrolet Silverado Extended Cab Short Box (New Style) 1999-2004 Chevrolet Silverado 1500 Series Regular Cab (New Style) 2000-2004 Chevrolet 1500 Series Avalanche, Suburban and Tahoe 2001-2004 Chevrolet Silverado 2500/3500 Series Regular Cab with Long Bed or Extended Cab (New Style) 2001-2004 Chevrolet Silverado 2500 Series Crew Cab, Short Box (New Style) 1996-1999 GMC 1500 Series Extended Cab Short Box Pickup (Old Style) 1996-1999 GMC 1500 Series Regular Cab Pickup and Utility Models (Old Style) 1999-2002 GMC Sierra Extended Cab Short Box (New Style) 1999-2004 GMC Sierra 1500 Series Regular Cab (New Style) 2000-2004 GMC 1500 Series Yukon, Yukon XL 2001-2004 GMC Sierra 2500/3500 Series Regular Cab with Long Bed or Extended Cab (New Style) 2001-2004 GMC Sierra 2500 Series Crew Cab, Short Box (New Style) 2003-2005 HUMMER H2 with Four Wheel Drive (4WD) or All Wheel Drive (AWD) and One-Piece Propeller Shaft ONLY.… Read More

Ticking or Knocking Type Noise Coming From Engine or Transmission Area

Download Subject: L36, L67, L26, L32, LA1, LX9, MN7, M15 Ticking or Knocking Type Noise Coming From Engine or Transmission Area (Replace Flexplate and Torque Converter) Models: 2005 Buick Park Avenue 2005-2006 Buick Allure (Canada Only), LaCrosse, LeSabre, Rendezvous, Terraza 2005 Chevrolet Impala, Monte Carlo, Venture 2005-2006 Chevrolet Malibu, Malibu Maxx, Uplander 2005 Pontiac Aztek, Bonneville 2005-2006 Pontiac Grand Prix, G6 GTP, Montana SV6 2006 Saturn Relay AWD with 3800 3.8L Series III V6 Engine (VINs K, 1, 2, 4, – RPOs L36, L67, L26, L32) or 3500 3.5L V6 Engine (VINs L, 8 RPO LX9) or 3400 3.4L V6 Engine (VIN E – RPO LA1) and Hydra- Matic(R) 4T65-E Transmission (RPOs MN7, M15) Supercede: This bulletin is being revised to update the pictures for better clarification. Please discard Corporate Bulletin Number 06-06-01-014B (Section 06 – Engine/Propulsion System). Condition Some customers may comment on a ticking or knocking type noise coming from the engine or transmission area.… Read More

Information on Error Codes on Radio Display – Their Cause and Corrective Action

Download odels: 1995-1996 Buick Roadmaster 1995-1999 Buick LeSabre 1995-2004 Buick Century, Regal 1995-2005 Buick Park Avenue 1996-1999 Buick Riviera, Skylark 2004-2005 Buick Rainier 1995-1999 Chevrolet Lumina, Monte Carlo, Fullsize Pickup Models (Old Style) 1995-2005 Chevrolet Blazer 1996 Chevrolet Lumina APV 1996-1999 Chevrolet Cavalier 1996-2000 Chevrolet Express Van 1996-2002 Chevrolet Astro Van 1997-2002 Chevrolet Camaro 1997-2003 Chevrolet Malibu 1997-2005 Chevrolet Corvette, Venture 2000-2005 Chevrolet Silverado 2002-2005 Chevrolet Avalanche, TrailBlazer, TrailBlazer EXT 2003-2005 Chevrolet SSR 2004-2005 Chevrolet Classic, Colorado 1995-1999 GMC Fullsize Pickup Models (Old Style) 1995-2002 GMC Jimmy 1996-2000 GMC Savana Van 1996-2002 GMC Safari Van 2000-2005 GMC Sierra 2002-2005 GMC Envoy, Envoy XL 2004-2005 GMC Canyon, Envoy XUV 1995-1999 Oldsmobile Aurora, Eighty Eight 1995-1997 Oldsmobile Cutlass Supreme 1999-2004 Oldsmobile Alero 1998-2002 Oldsmobile Intrigue 1995-1996 Oldsmobile Ninety Eight 1996-1999 Oldsmobile Achieva 1996-2004 Oldsmobile Bravada, Silhouette 1995-1999 Pontiac Bonneville, Sunfire 1995-2002 Pontiac Firebird 1995-2005 Pontiac Grand Prix 1996-1997 Pontiac Trans Sport 1996-2000 Pontiac Grand Am 1997-2005 Pontiac Montana 2003-2005 HUMMER H2.… Read More

1997 Buick Century COLD ENGINE TICK OR RATTLE AFTER START-UP

Download 1997 Buick Century Limited 3.1/3.4L ENG TICK OR RATTLE AFTER COLD START UP COLD ENGINE TICK OR RATTLE AFTER START-UP (REPLACE PISTON/PIN ASSEMBLY) Model(s): 1994-95 Buick Regal 1994-97 Buick Skylark 1994-98 Buick Century 1994-95 Chevrolet Beretta Corsica, Lumina, Monte Carlo 1996-98 Chevrolet Venture 1997-98 Chevrolet Malibu 1993-97 Oldsmobile Cutlass Supreme 1994-96 Oldsmobile Cutlass Ciera 1994-97 Oldsmobile Achieva 1996-98 Oldsmobile Silhouette 1997-98 Oldsmobile Cutlass 1994-98 Pontiac Grand Am, Grand Prix 1996-98 Pontiac Trans Sport with 3100, 3400 V6 Engine (VINs M, E – RPOs L82, LA1) CONDITION Some customers may comment on a ticking type noise that begins shortly after cold engine start-up and gradually diminishes as the engine warms up. In most cases, the noise is gone after five (5) minutes. In severe cases, the noise may not disappear when lhe engine is hot. CAUSE Under normal design tolerances when the piston pin bore is produced at the maximum tolerance and the piston pin is produced at the minimum tolerance (min-max tolerance) trace noise levels can occur.… Read More

2009-2010 Ford Expedition LOW FREQUENCY ENGINE KNOCKING NOISE AT HOT IDLE

Download 2009-2010 Ford Expedition LOW FREQUENCY ENGINE KNOCKING NOISE AT HOT IDLE. FORD: 2009-2010 Expedition, F-150 LINCOLN: 2009-2010 Navigator. 6. Open Data Logger. ISSUE Some 2009-2010 F150 vehicles equipped with a 7. Select Powertrain Engine. 4.6L 3V or 5.4L 3V engine, Expedition and Navigator vehicles may exhibit a low frequency 8. Select PCM Data Logger. knocking noise from the engine at hot idle only. The 9. Clear the preselected items by clicking the noise is predominately heard from the right front eraser icon button. wheel well area and/or the right hand (RH) engine cam cover. This noise may be generated from the 10. Select variable cam timing desired angle RH variable camshaft timing (VCT) phaser number (VCT_DSD). assembly. This procedure was created to diagnose the RH VCT phaser assembly. 11. Go to live display and press the tick mark. 12. Make sure the parameter identification (PID) is ACTION highlighted with the dark lines above and below Follow the Service Procedure steps to correct the the data being displayed.… Read More

2009 Ford Escape INTERMITTENT CYLINDER HEAD CAMSHAFT KNOCK/THUMP NOISE

Download FORD: MERCURY: 2009 Escape 2009 Mariner This article supersedes TSB 09-11-6 to update the b. Isolate noise to LH – Listen to the cylinders Service Procedure and Part List. 4 and 6 valve cover fasteners (number 6 is by the coolant pump). There will be a ISSUE significant difference in transmitted noise Some 2009 Escape and Mariner vehicles, equipped between the cylinder 4 and 6 fasteners with 3.0L engine, may exhibit an intermittent when noise is present. Noise from LH – go knocking or thumping type noise from the cylinder to Step 4. head. After engine temperature reaches 210-220 °F NOTE (99-104 °C), the noise is typically heard from the THE RH AND LH NOISES HAVE DIFFERENT rear of the engine as the vehicle comes to a stop. CAUSES. FOLLOW ALL STEPS CAREFULLY FOR An example would be coming to a stop at the end PROPER DIAGNOSIS AND REPAIR. of a highway exit ramp.… Read More

2001 Chevrolet Chevy K Silverado Crankshaft Position Sensor Engine Stall

Download Models: 2001 Chevrolet Silverado, Suburban 2001 GMC Sierra, Yukon XL Equipped with 8.1L V8 (RPO L18 – VIN G) Engine. Condition General Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2001 model year Chevrolet Silverado, Suburban; GMC Sierra and Yukon XL model vehicles, equipped with an 8.1L V8 (RPO L18 – VIN G) engine. Some of these vehicles have a condition in which the crankshaft position sensor can fail intermittently or permanently. If the sensor fails intermittently, the Service Engine Soon (SES) light may illuminate and the vehicle may run rough. In addition, the engine may stall, and if so, may re-start immediately or after a cool down period. If the sensor fails permanently, the engine will quit running and will not re-start. Correction Dealers are to replace the crankshaft position sensor. Vehicles Involved Involved are certain 2001 model year Chevrolet Silverado, Suburban; GMC Sierra and Yukon XL model vehicles, equipped with an 8.1L V8 (RPO L18 – VIN G) engine and built within these VIN breakpoints: Subject: 06083 — Crankshaft Position Sensor Engine Stall Models: 2001 Chevrolet Silverado, Suburban 2001 GMC Sierra, Yukon XL Equipped with 8.1L V8 (RPO L18 – VIN G) Engine Year Division Model From Through 2001 Chevrolet Silverado iE100004 1E200999 1F100006 1F116767 1M100002 1M103668 1Z100010 1Z100042 2001 Chevrolet Suburban 1G100001 1G174359 1J100010 1J100058 2001 GMC Sierra 1E100003 1E2012022 1F100004 1F113912 1M100023 1M103669 1Z100013 1Z100026.… Read More

1994 Chevy Truck C 1500 Ignition – Timing Connector Location Change

Download 1994 Chevy Truck C 1500 Truck 2WD V6-262 4.3L VIN Z Vehicle Level Maintenance Tune-up and Engine Performance Checks Ignition Timing Technical Service Bulletins Ignition – Timing Connector Location Change. INFORMATION SUBJECT: TIMING CONNECTOR LOCATION CHANGE MODELS: 1994 CHEVROLET AND GMC C/K TRUCKS WITH GASOLINE ENGINES The timing connector, which can be disconnected to return engine timing to base for adjustment purposes, has been moved from the engine compartment to inside the cab. This new location is not currently reflected in the Service or Owner’s Manual. The new location is under the dash directly below the glove compartment. The tan/black wire is routed for a short distance outside of a large wiring harness. This large harness is routed between the heater blower motor and evaporator case. The timing connector is taped to the wire bundle (Figure 1).… Read More

ALL INFINITI BRAKE NOISE/JUDDER/PEDAL FEEL DIAGNOSIS AND REPAIR

Download • Most brake issues fall into the following categories: a. Brake Noise: A squeak, squeal, clunk, or groan that occurs when the brakes are applied or released. b. Brake Judder: A vibration that can be felt in the vehicle, steering wheel, or brake pedal when the brakes are applied. c. Pedal Feel: The effort needed to operate the brakes is too high or too low. SERVICE PROCEDURE 1. Verify the condition by road testing the vehicle with the customer. 2. Determine the specific brake issue based on the description in the Service Information above. 3. Follow the appropriate repair procedure(s), listed on the following pages, for your specific issue. BRAKE NOISE • Brakes can make a range of noises when applied or released. Some noises are normal and no repair action should be taken. • Use the following descriptions to identify the specific type of brake noise and the appropriate repair: Squeak noise when the brakes are cold: • Usually occurs during the first few stops in the morning.… Read More

LM7, L59 or L33 Engines with Cold Start Rough or Incorrect Idle, Misfire, Malfunction Indicator Lamp (MIL) or Flashing Requiring O2 Sensor Replacement (Reprogram PCM)

Download Models: 2004-2005 Cadillac Escalade 2004-2005 Chevrolet Avalanche, Silverado 1500, Suburban, Tahoe 2005 Chevrolet Silverado Hybrid (HP2) 2004-2005 GMC Sierra 1500, Yukon, Yukon XL 2005 GMC Sierra Hybrid (PH2) with Vortec 5300 5.3L V-8 Engine (VINs T, Z, B — RPOs LM7, L59, L33) Condition Some customers may comment on a Malfunction Indicator Lamp (MIL) On or that the MIL is flashing. An actual engine misfire may or may not be felt along with an incorrect idle speed. Typically this occurs during cold winter months, on cold engine starts. Some vehicles may have been previously serviced for the same condition. Technicians may also find the following DTCs stored with the Tech 2® P0131, P0133, P0134, P0137, P0138, P0140, P0151, P0153, P0154, P0157, P1133, which may be in conjunction with P0171, P0174, P0300 and P1138. Cause Water shock occurs when water droplets are present in the exhaust. The water in the exhaust contacts the sensor element inside the HO2 sensor, causing the HO2 sensor element to crack.… Read More