gmc savana 3500 diesel
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Filed Under (GM) by admin on 06-07-2010
If replacing the Passlock module with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock(TM) sensor data code immediately. The existing PCM however, must learn the new fuel continue password when the Passlock module is replaced. If replacing a PCM with a GM Service Parts Operations (SPO) replacement part, after programming, these modules will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle’s fuel continue password and will require a learn procedure after programming to learn the current vehicle’s password. Conditions Use this procedure after replacing: The Passlock(TM) Sensor The Passlock(TM) Module The PCM Learn Procedures There are 2 available methods to perform the programming procedure:
Filed Under (GM) by admin on 04-06-2010
Models: 2008-2009 Chevrolet Colorado, TrailBlazer 2008-2009 GMC Canyon, Envoy 2008-2009 HUMMER H3, H3T 2008-2009 Saab 9-7X All Equipped With Engine RPOs LLR, LLV, LL8 Please Refer to GMVIS Condition Some customers may comment that the malfunction indicator lamp (MIL) is illuminated. Some customers may also comment that the engine runs rough. The technician may find DTCs P0300, P0301, P0302, P0303, P0304, P0305, or P0306 set as current or in history, depending on which engine the vehicle is equipped with. Upon further examination, the technician may observe evidence of water intrusion into the spark plug recess area. Cause This condition may be caused by an engine being exposed to a large quantity of water, which may result in some of the water seeping down past the vented threads of an ignition coil bolt, then flowing through the vent opening that is located in the bottom of the related ignition coil bolt hole, and collecting in the spark plug recess area. Correction Important: DO NOT reprogram or replace the engine control module (ECM) for this condition. If evidence of water intrusion in the spark plug recess area/s is not observed, then refer to the appropriate DTC procedures in SI.
Filed Under (Dodge) by admin on 06-01-2011
SUBJECT: Cummins 6.7L Diesel Turbocharger – Necessary System Inspections And Tests OVERVIEW: This bulletin involves the inspection and/or test of the Diesel Turbocharger and related emissions system components. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Additional diagnosis may reveal that the MIL is due to Diagnostic Trouble Code (DTC): P2262 – Turbocharger Boost Pressure Not Detected – Mechanical. DIAGNOSIS: 1. Connect the StarSCAN® to the Diagnostic Link Connector (DLC). 2. Set the parking brake. Start the vehicle engine. 3. From the “Home” screen on the StarSCAN® select: a. “ECU View” button. b. “PCM Powertrain Control Module” button. c. “View DTC’s” button. 4. Record all Diagnostic Trouble Codes (DTC’s) that are present in the PCM. NOTE: It is IMPORTANT to record (capture) all DTC’s present in the PCM prior to proceeding further with this diagnosis. Procedures later may cause all DTC’s to be erased. 5. Is DTC P1451, P2463, or P242F present in the PCM? a. If YES >>> STOP. Refer to Service Bulletin (SB) 11-002-07 (or later bulletin) to address this concern and before proceeding further with this Service Bulletin. In addition to other repairs, SB 11-002-07 may direct the technician to perform a thorough cleaning of Engine and Exhaust Aftertreatment System components. Contact STAR if additional assistance is required. Proceed to the next step ONLY after SB 11-002-07 has been reviewed and/or performed. b. If NO >>> then proceed to the next step. 6. Verify that the PCM is at the latest application software level. 7. Is the PCM at the latest application software level? a. If YES >>> then proceed to the next step. b. If NO >>> then reprogram the PCM to the latest software level. Refer to SB 18-013-08 (or later bulletin). Proceed to the next step ONLY after the PCM has been reprogrammed to the latest software level. 8. Was DTC P2262 present in the PCM?
Filed Under (GM) by admin on 12-06-2010
Test Description The numbers below refer to the step numbers on the diagnostic table. 2. Allow the engine to cool before performing this test. If the sensor is at the operating temperature, the HO2S voltage will stay high or low. If the HO2S voltage stays between 300-700 mV this indicates the HO2S heater is inoperative. 3. If more than one HO2S DTC is set, this is a good indication that the HO2S fuse is open. Test all the related circuits going to all the heated oxygen sensors for a short to ground. If you cannot locate a shorted circuit, it may be necessary to disconnect each HO2S one at a time to locate a shorted sensor. 4. This step determines if an ignition positive voltage supply is available at the sensor.
Filed Under (Ford) by admin on 07-05-2011
Removal NOTE: Removal of the vertical EGR cooler is not required to service the thermostats. 1. Remove the upper cooling fan shroud. For additional information, refer to Cooling Fan Shroud — 6.4L Diesel, Upper in this section. 2. Remove the degas bottle. For additional information, refer to Degas Bottle — 6.4L Diesel in this section. 3. Using a mirror, find the end of the upper radiator hose spring clip. Remove the spring clip, disconnect the upper radiator hose from the thermostat housing and position the upper radiator hose aside. 4. Remove and discard the nut and the vertical EGR cooler lower clamp. 5. Remove the bolt and the vertical EGR cooler lower bracket. 6. NOTE: Vertical EGR cooler removed from art for clarity. Disconnect the wiring from the heater return tube. 7. Remove the 2 bolts and position out the LH heater return tube. • Remove and discard the O-ring seal. 8. NOTE: The 6.4L diesel engine uses 2 thermostats. Remove the 4 bolts, the collar and the thermostat housing. • Lift the bottom of the collar up and rotate toward the engine to remove. 9. NOTICE: If the thermostats are contaminated with engine oil, new thermostats must be installed. Reusing a thermostat that has been exposed to engine oil may result in engine overheating. Remove the thermostats and the gasket from the thermostat housing. • Discard the gasket. Installation 1. Install a new gasket and the thermostats into the thermostat housing. 2. Install the thermostat housing, the collar and the 4 bolts. • Tighten to 13 Nm (115 lb-in). 3. NOTE: Vertical EGR cooler removed from art for clarity. NOTE: Install a new O-ring seal. Install the LH heater return tube and the 2 bolts. • Tighten to 13 Nm (115 lb-in). 4. Connect the wiring to the heater return tube. 5. Position the lower vertical EGR cooler bracket and loosely install the bolt. 6. Install a new vertical EGR cooler lower clamp. Tighten the clamp nut in 3 stages. • Stage 1: Tighten the nut to 10 Nm (89 lb-in). • Stage 2: Loosen the nut 720 degrees (2 complete turns). • Stage 3: Tighten the nut to 8 Nm (71 lb-in). 7. Tighten the lower EGR cooler bracket bolt. • Tighten to 62 Nm (46 lb-ft). 8. Connect the upper radiator hose to the thermostat housing. Install the spring clip. • Verify the spring clip is correctly seated. 9. Install the degas bottle. For additional information, refer to Degas Bottle — 6.4L Diesel in this section. 10. Install the upper cooling fan shroud. For additional information, refer to Cooling Fan Shroud — 6.4L Diesel, Upper in this section.