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

1995 Oldsmobile Cutlass Supreme DTC 77

Download Direct-Hit 1995 Oldsmobile Cutlass Supreme 3.1L Test Details Hotline Archive # 97688 Confirmed Fix Vehicle Application: 1993 Chevrolet Camaro 3.4L 1995 Chevrolet Camaro 3.4L, Vin S 1994 Buick Skylark Custom 3.1L, Vin M, Eng Cfg V6 1995 Chevrolet Lumina 3.1L 1994 Chevrolet Corsica 3.1L, Vin M, Eng Cfg V6 1995 Pontiac Grand AM SE 3.1L, Vin M, Eng Cfg V6 1994 Oldsmobile Cutlass Supreme S 3.1L, Vin M 1995 Pontiac Grand Prix SE 3.1L Customer Concern: DTC 77. Tests/Procedures: 1. Remove the throttle body, and inspect the Exhaust Gas Recirculation Valve (EGR) port in the intake plenum. 2. The passage plugs at the bottom where it dumps into the plenum. 3. Best to use an old speedometer cable in a drill to run inside the passage to knock all the carbon out. Potential Causes: Restricted Exhaust Gas Recirculation (EGR) Passages Tech Tips: When an EGR solenoid is activated by the Powertrain Control Module (PCM), the PCM monitors the change in the Manifold Absolute Pressure (MAP) reading.… Read More

1998 Buick Park Avenue Engine Coolant Consumption or Coolant Leak

Download Engine Coolant Consumption or Coolant Leak (Inspect For Material Degradation/Replace Intake Manifolds) Models: 1995-1997 Buick Riviera 1995-1999 Buick LeSabre, Park Avenue 1996-1999 Buick Regal 1998-1999 Chevrolet Lumina, Monte Carlo 1995-1996 Oldsmobile Ninety-Eight 1995-1999 Oldsmobile Eighty-Eight 1998-1999 Oldsmobile Intrigue 1995-1999 Pontiac Bonneville 1997-1999 Pontiac Grand Prix with 3.8L Engine (VIN K — RPO L36) Condition Some customers may comment on excessive engine coolant consumption, or an engine coolant leak near or under the throttle body area of the upper intake manifold. Cause Upper intake manifold composite material may degrade around the EGR stove pipe and could result in an internal or external coolant leak. Correction 1. Follow the upper intake manifold removal instructions found in the Engine Unit Repair Section of the Service Information Manual. 2. Refer to the arrow in the illustration of the upper intake manifold above. Inspect the inner diameter of the EGR passage for signs of material degradation.… 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

How to bypass the VATS (PASSKey II) system in a late model GM vehicle

DownloadPontiac 1994-1996 Grand Prix 1992-1999 Bonneville 1993-2002 Firebird/Trans Am/Firehawk Buick 1994-1996 Regal 1992-1999 LeSabre 1991-1996 Park Avenue 1991-1996 Roadmaster Oldsmobile 1994-1997 Cutlass Supreme 1992-1999 Eighty Eight/LSS/Ninety Eight/Regency 1991-1996 Custom Cruiser Wagon Chevrolet 1995-1999 Monte Carlo 1995-2001 Lumina 1993-2002 Camaro 1986(?)-1996 Corvette (C4) Cadillac 1991-1996 Fleetwood 1992-1997(?) Seville/STS/DeVille Any other GM Vehicles with the VATS or PASSKey II system (If your ignition key looks like the one pictured below.) Alright, let’s begin the madness: 1. Take your DMM, set it to measure Ohms (use the 20k setting.) Measure the resistance across the pellet of the ignition key. Place one probe on the silver part of one side of the pellet, and the other probe on the other side. Write this value down. 2. Purchase a resistor or resistors that add up to the value measured in step 1. Radio Shack is a great place to go for the resistors, heat shrink tubing, and the “bullet-style” solderless connectors.… Read More