Filed Under (GM) by admin on 16-04-2011
Note: Pry the inside door handle to door retaining screw cover (1) using a suitable tool. • Remove the inside door handle to door retaining screw cover (1) from the door trim panel (3). • Remove the inside door handle to door retaining screw (2).• Remove the door trim panel to door retaining screws (1). Note: Firmly pull on the armrest handle to release the door trim panel to door retaining clips. • Remove the door trim panel from the door to allow access to door handle cable, door lock cable and courtesy light electrical connectors (if fitted). Note: The door handle and lock cables slide out and lift up to remove from the door trim panel. • Disconnect the inside door handle cable (1) and door lock cable (2) from the door trim panel. • Disconnect the courtesy light electrical connectors (1) from the door trim panel (2) (if fitted). • Remove the door trim panel (2) from the door. Installation Procedure Note: Green retaining clips are along the front edge and white retaining clips are along the back edge. • Make sure that all of the retaining clips are on the door trim panel and not still attached to the sheetmetal. Note: Do not fully install the door trim panel at this stage. The inside door handle cable, door lock cable and courtesy light electrical connector have to be attached first (if fitted). • Position the door trim panel to the door.
Filed Under (GM) by admin on 11-04-2011
Description The Engine Cranks but Does Not Run diagnostic table assumes that the battery condition and the engine cranking speed are OK. If the battery condition and the cranking speed are not OK, refer to Diagnostic System Check – Engine Electrical in Engine Electrical for diagnosis. Make sure that there is adequate fuel in the fuel tanks. Diagnostic Aids • Check the duct work between the mass air flow (MAF) sensor and the throttle body for air leaks. • A malfunctioning MAF sensor may cause a no start or a stall after start. If you suspect this, disconnect the MAF sensor. The powertrain control module (PCM) will default to the speed density in order to calculate the load and the air flow. If this corrects the condition and the connections are OK, replace the MAF sensor. If the steps above check OK, refer to Symptoms . Test Description The numbers below refer to the step numbers on the diagnostic table. 4. It may be necessary to connect a battery charger to the battery for this step. If the battery state of charge is low, the scan tool may reset during the cranking test. 5. This step tests the ignition relay for proper operation. The ignition relay supplies voltage to the injectors and the ignition coils. When the ignition relay is not operating properly, a no start condition occurs. If the test lamp does not illuminate, this indicates the ignition relay is not suppling a voltage to the fuses. 6. The crankshaft position (CKP) sensor is located above the starter. 7. The camshaft position (CMP) sensor is located at the rear of the engine behind the intake manifold. 8. The ignition feed circuit for the CMP and CKP sensors is internally connected within the PCM. A short to ground on either circuit will cause a no start condition. 10. The fuel cap may need to be removed in order to hear if the fuel pump is operating. 12. At this point the engine should start. Refer to Hard Start for further diagnosis.
Filed Under (GM) by admin on 11-01-2011
Condition Some customers may comment on erratic operation of the speedometer. Others may comment that the speedometer needle shakes above 96 km/h (60 mph). Cause This condition may be caused by a loose or poor connection at Powertrain Control Module/Engine Control Module (PCM/ECM) ground G108. Correction Technicians are to inspect and repair ground G108 as necessary. Refer to callout 1 in the illustration above for the location of G108. Refer to the Testing for Intermittent Conditions and Poor Connections and the Wiring Repair procedures in SI for more information. Warranty Information (excluding Saab U.S. Models)
Filed Under (GM) by admin on 05-11-2010
Opening the Endgate When There Is an Electrical Failure Removal Procedure 1. Lower the end gate window out of the roof rear header seal. 2. Remove the end gate trim panel. 3. Remove the end gate inner reinforcement panel. 4. Locate the manual release lever (1), located on the upper and lower left latches (2). 5. Slide the manual release levers (1) upward to swing open the end gate. 6. Diagnose and repair the end gate latches. Installation Procedure 1. Install the end gate inner reinforcement panel. 2. Install the end gate trim panel. 3. Check for proper operation of the end gate latches and window.
Filed Under (GM) by admin on 04-11-2010
DESCRIPTION The Throttle Position (TP) sensor is a potentiometer. The TP sensor is connected to the throttle shaft on the throttle body. By monitoring the voltage on the signal line, the VCM calculates throttle position. As the throttle valve angle is changed (accelerator pedal moved), the TP sensor signal also changes. At a closed throttle position, the output of the TP sensor is low. As the throttle valve opens, the output increases so that at Wide Open Throttle (WOT,) the output voltage should be above 4.0 volts. PURPOSE The VCM calculates fuel delivery based on throttle valve angle (driver demand). A broken or loose TP sensor may cause intermittent bursts of fuel from an injector. This may cause an unstable idle because the VCM detects the throttle is moving.