2002 chevy astro awd
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Filed Under (Chevrolet) by admin on 11-08-2010
Subject: Engagement Time of Electronically Controlled Transmissions in General Motors Vehicles (Garage Shins, Park to Reverse, Neutral to Drive, Neutral to Reverse, Park to Drive, Delayed Engagement) Models: 2000-2002 Chevrolet Cámaro 2000-2005 Chevrolet Corvette 2000-2002 Pontiac Firebird 2004-2006 Pontiac GTO 2000-2007 All GM Light Duty Trucks 2003-2007 HUMMER H2 2006-2007 HUMMER H3 2005-2007 Saab 9-7X with 4L60-E (RPO M30) or 4L65-E (RPO M32) Automatic Transmission Supercede: This bulletin is being revised to remove 2006-2007 Chevrolet Corvettes. Please discard Corporate Bulletin Number 03-07-30-007C (Section 07 – Transmission/Transaxle). Park/Neutral to Reverse or Drive (commonly called garage shift) engagement times may be different from what many customers might be accustomed to especially if they have recently traded for a General Motors vehicle. Normal Park/Neutral to Reverse or Drive engagement time will be in the vicinity of one (1) second if the automatic transmission fluid (ATF) is above 0°C (32°F) . When the ATF is colder than 0°C (32°F), the engagement time will become longer the colder the transmission fluid. A time limit factor cannot be placed on proper engagement times because the factors that affect transmission operation are many. At the moment of engine start, for economy and emission requirements, the transmission line pressure is maintained at low levels. This allows a lower cold idle engine RPM (the colder the oil is the higher the energy level (engine torque output) required to pressurize the oil).
Filed Under (Chevrolet) by admin on 03-07-2010
REMOVAL PROCEDURE NOTE: There are two procedures available to install the distributor. Use Installation Procedure 1 when the crankshaft has NOT been rotated from the original position. Use Installation Procedure 2 when any of the following components are removed: The intake manifold The cylinder head The camshaft The timing chain or sprockets The complete engine If the malfunction indicator lamp (MIL) turns on and DTC P1345 sets after installing the distributor, this indicates an incorrectly installed distributor. Engine damage or distributor damage may occur. Use Procedure 2 in order to install the distributor.
Filed Under (Chevrolet) by admin on 03-09-2010
Subject: Audible Spark Knock (Detonation), MIL Illuminated, DTC P0332 Set (Replace Rear Bank Knock Sensor and RTV Area Around Sensor) Models: 1998-2002 Chevrolet Camaro, Corvette 1998-2002 Pontiac Firebird with 5.7L Engine (VIN G – RPO LS1) 1999-2002 Chevrolet Silverado, Suburban, Tahoe 2002 Chevrolet Avalance 1999-2002 GMC Sierra, Yukon, Yukon XL 2002 Cadillac Escalade, Escalade EXT with 4.8L, 5.3L or 6.0L Engine (VINs V, T, Z, N, U – RPOS LR4, LM7, L59, L09, L04) This bulletin is being revised to add Cadillac Escalade and Cadillac Escalade EXT to the Models. Please discard Corporate Bulletin Number 02-06-04-023 (Section 6 – Engine/Propulsion System). Condition Some customers may comment on a mild to severe engine ping (commonly referred to as spark knock), usually worse during acceleration and/or an illuminated MIL. Upon investigation, the technician may find DTC P0332 set. Cause This condition may be the result of corrosion of the rear bank knock sensor due to water intrusion into the sensor cavity. This condition is more apparent on vehicles in which customers frequently wash the engine compartment
Filed Under (Nissan) by admin on 31-12-2010
IF YOU CONFIRM: The AWD Transfer Case needs to be replaced because: • The case is cracked, and/or • Internal gears are damaged. NOTE: Damage, if it occurs, may have been caused by operating the AWD system in the LOCK mode on dry pavement. ACTIONS: 1. Replace the following: • Transfer Case. • AWD Lock Switch with the new one listed in the Parts Information. • AWD Control Unit with the new one Listed in the Parts Information. NOTE: Refer to the ESM for component replacement information. 2. IMPORTANT: Attach pages 3 and 4 of this bulletin to the customer’s copy of the repair order and make sure the customer is handed these pages. • Pages 3 and 4 of this bulletin contain revised Owner Information for “USING ALL WHEEL DRIVE (AWD)”. 3. Inform the customer that the installation of these new parts upgrades the operation of the AWD Lock Switch. The AWD Lock switch will now operate like a 2005 Murano.
Filed Under (Buick) by admin on 30-12-2010
Conditions for Running the All-Wheel Drive (AWD) Disable Fault • The system voltage is 9-18 volts. • The engine speed is greater than 500 RPM for 5 seconds, and the engine is not in fuel shut-off. • The rear drive module must not be in an overtemperature condition. Conditions for Turning On the All-Wheel Drive (AWD) Disable Lamp The AWD disable lamp illuminates when one of the following conditions exists for 5 seconds: • The PCM commands the solenoid ON and the voltage feedback remains high, B+. • The PCM commands the solenoid OFF and the voltage feedback remains low, 0 volts. This condition is present for 3 key cycles. Action Taken When the All-Wheel Drive (AWD) Lamp Illuminates • The PCM does not illuminate the malfunction indicator lamp (MIL). • The PCM inhibits AWD. • The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Failure Records. • The PCM stores the AWD disable fault in PCM history. Conditions for Clearing the All-Wheel Drive (AWD) Disable Fault • A scan tool can clear the fault. • The PCM clears the fault from PCM history if the vehicle completes 40 warm-up cycles without a non-emission related diagnostic fault occurring. • The PCM cancels the fault default actions when the fault no longer exists.