Filed Under (Mazda) by admin on 06-12-2010
To prevent system contamination, whenever the evaporator core is replaced, also replace the receiver/drier. NOTE: The evaporator core is not separately serviceable, it is serviced only with the evaporator core housing assembly. NOTE: If an evaporator core leak is suspected, the evaporator core must be leak tested before it is removed from the vehicle; see—– 07-10 A/C EVAPORATOR / CONDENSER CORE ONVEHICLE LEAK TEST . 1. Remove the evaporator core housing. See 07-11 EVAPORATOR CORE HOUSING REMOVAL / INSTALLATION . 2. Transfer the components from the old evaporator core housing to the new evaporator core housing. 3. Install the evaporator core housing. See 07-11 EVAPORATOR CORE HOUSING REMOVAL / INSTALLATION . 1. Disconnect the blower motor and blower motor resistor electrical connectors. 2. Disconnect the heater hoses. a. Using suitable tools, clamp-off the heater hoses. b. Release the clamps and disconnect the heater hoses. 1. Detach the pin-type retainer and position aside the windshield washer hose. 2. Disconnect the vacuum supply hose near the evaporator core housing. 3. Disconnect the condenser to evaporator line spring lock coupling from the evaporator core inlet. See 07-10 SPRING LOCK COUPLING . • Discard the O-ring seals. NOTE: The following step is performed at the lower passenger side dash panel, inside the passenger compartment.Disconnect the vacuum hose connector and remove the nut.
Filed Under (Chevrolet) by admin on 11-01-2011
Models: 1982-2005 GM Passenger Cars and Light Duty Trucks 2006-2007 Buick Rainier 2006 Cadillac Escalade, Escalade ESV, Escalade EXT 2006 Chevrolet SSR 2006-2008 Chevrolet Avalanche, Colorado, Express, Silverado Classic, Silverado, Suburban, Tahoe, TrailBlazer 2006 GMC Yukon Denali, Yukon Denali XL 2006-2008 GMC Canyon, Envoy, Savana, Sierra Classic, Sierra, Yukon, Yukon XL 2006 Pontiac GTO 2006-2007 HUMMER H2 2006-2008 HUMMER H3 2006-2008 Saab 9-7X with 4L60, 4L60E, 4L65E or 4L70E Automatic Transmission (RPOs MD8, M30, M32, M33 or M70) Condition Some customers may comment that the vehicle has no movement when the transmission is shifted to DRIVE or THIRD position, but there is normal operation when it is shifted to SECOND, FIRST or REVERSE position. Cause This condition may be caused by a damaged forward sprag assembly (642). Correction When inspecting the sprag, it is important to test the sprag for proper operation by holding the outer race (644) with one hand while rotating the input sun gear (640) with the other hand. The sun gear should rotate only in the counterclockwise direction with the input sun gear facing upward. If the sprag rotates in both directions or will not rotate in either direction, the sprag elements should be inspected by removing one of the sprag reserved. retaining rings (643). Refer assembly © 2010 General Motors. All rights
Filed Under (Buick) by admin on 30-12-2010
Models: 2004-2006 Buick Rainier 2001-2006 Cadillac Escalade Models 2001-2006 Chevrolet Avalanche, Blazer, Silverado, Suburban, Tahoe, TrailBlazer Models 2001-2006 GMC Envoy, Jimmy, Sierra, Yukon Models 2001-2004 Oldsmobile Bravada 2005-2006 Saab 9-7X Some vehicles may experience a gradual coolant loss over time. A very low percentage of cylinder head(s) manufactured with an embossed Castech logo may develop a porosity crack in a very specific area. Inspect the cylinder head assembly to determine if the casting was manufactured by Castech. This can be accomplished by inspecting for their casting logo located on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head. Important: If the cylinder head(s) are Not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss. Refer to the following illustrations on how to identify Castech casting and/or the very specific areas of the cylinder head(s) for a coolant leak from porosity.
Filed Under (Mazda) by admin on 02-03-2011
Some vehicles equipped with the folding soft top may experience water accumulation in the foot wells due to the soft top drains becoming clogged with leaves and other debris. 1736a DRAIN COVER DRAIN VALVE ASSEMBLY As mass production changes: – A filter has been added to the drain valve assembly to prevent leaves or other foreign substance from clog- ging the drain. – Ribs have been added to the upper and lower valves of the drain valve assembly to prevent the valves (rub- ber flaps) from being forced out of position in the event compressed air is used to clear the drains from under the vehicle. – A foam urethane filter has been established for the drain cover. Vehicles with clogged drains should have the drain assemblies updated as described in the following repair pro- cedure, also included in this bulletin are maintenance tips for the customers to perform to ensure dependable operation of these drains. REPAIR PROCEDURE NOTE: Removal of the soft top is not required to perform the repair procedure. Illustrations in this bulletin are for component identification and location purposes only. 1. Verify customer concern. 2. Remove rear package trim according to Workshop Manual (section 09 -17 REAR PACKAGE TRIM REMOVAL/INSTALLATION) and related components, then remove the left and right side shelves according to Workshop Manual (section 09-17 SIDE SHELF REMOVAL/INSTALLATION). 3. Remove the seat belt retractors and covers according to Workshop Manual (section 08-11 SEAT BELT REMOVAL/INSTALLATION). – - TYPE A VEHICLES: Proceed to next step. TYPE B VEHICLES: Proceed to “TYPE B VEHICLES” under DRAIN VALVE REPLACEMENT. 4. Using seat belt retractor holes for access, remove the drain valve assemblies. DRAIN COVER FILTER INSTALLATION 1. Clean and degrease the drain cover assemblies.
Filed Under (Buick) by admin on 14-11-2010
Steering Vibration/Shudder/Moan During Parking Maneuvers on Dry Pavement (Install Power Steering Pressure (Inlet) and/or Return (Outlet) Hose Assembly) 1995-99 Buick Riviera 1997-2001 Buick Park Avenue, Ultra 2000-2001 Buick LeSabre 2000-2001 Pontiac Bonneville steering vibration, shudder or moan noise when steering during parking maneuvers on dry pavement. Correction Install a new power steering pressure (inlet) hose assembly on the following vehicles: • 1995-98 Buick Riviera • 1997-98 Buick Park Avenue and Ultra Install a new power steering pressure (inlet) and return (outlet) hose assembly on the following vehicles: • 1999 Buick Riviera • 1999-2001 Buick Park Avenue and Ultra • 2000-2001 Buick LeSabre • 2000-2001 Pontiac Bonneville 1. Verify that the power steering pump reservoir is full. • If fluid level is low, fill and check for leaks. • If power steering system has air in the system, perform the “Bleeding Air from Power Steering System” procedure as described in the Power Steering System sub-section of the Service Manual. Important: When performing the “Bleeding Air from Power Steering System” procedure, it is important that the front of the vehicle is supported by the lower control arms. If the vehicle is not supported by the lower control arms, the procedure may cause the strut bushing to dislocate and cause new concern. Verify that the accessory drive belt is in good condition and that the pulleys are not bent or damaged. Verify proper belt tension and operation of the belt tensioner. Check for power steering hose ground out conditions. Check for good engine idle and correct engine RPM. Check to see that the rear transaxle mount does not have a plastic assembly aid installed which is used 2. 3. 4. 5. 6.