erratic speedometer on buick rendezvous
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Filed Under (Buick) by admin on 15-05-2010
2004-2007 Buick Rainier 2002-2008 Chevrolet TrailBlazer Models 2002-2008 GMC Envoy Models 2002-2004 Oldsmobile Bravada 2005-2008 Saab 9-7X 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.
Filed Under (Ford) by admin on 26-01-2011
Some 2005-2007 F-Super Duty vehicles may exhibit a speedometer and/or tachometer indicator issue. Symptoms may include intermittent, large inaccuracies, or jumping/bouncing/erratic pointers. ACTION Refer to the Service Procedure. SERVICE PROCEDURE 1. Verify there are no diagnostic trouble codes (DTCs). If there are DTCs present, follow the appropriate procedure in the Workshop Manual to clear the DTC and resolve the concern. 2. Confirm that the axle ratio and tire size are properly configured in the ABS module. 3. For a speedometer related concern, If no DTCs are present, the issue may be with any of the following components: • Cluster • ABS Module • ABS Speed Sensor • Vehicle Wiring • If the symptom is a continuous (non-intermittent) large inaccuracy, ensure that the axle ratio and tire size are properly configured in the ABS module. To identify the cluster as the root cause: 1. Monitor the vehicle speed sensor (VSS) PID in the powertrain control module (PCM), and the speedometer needle position while stopped. 2. If the speedometer displays 5 MPH (8 Km/h) or more, and the VSS PID indicates zero, replace the instrument cluster. 3. With an assistant observing the diagnostic tool, drive the vehicle at 20, 40, and 60 MPH (32, 64, and 97 Km/h) as indicated on the diagnostic tool, and record the value indicated by the speedometer. 4. If the speed indicated on the diagnostic tool versus speedometer readings vary by more than ± 5 MPH, (8 Km/h) replace the instrument cluster. ABS Module Concern To identify if the ABS Module is the root cause, refer to diagnostic procedures in the Workshop Manual. For any customer complaints of jumping/bouncing/erratic speedometers, a wiring concern may exist which is severe enough to interrupt the signal, but not severe enough to totally open/short the circuit.
Filed Under (Buick) by admin on 28-06-2010
Subject: Boom or Drone Noise at 2100 rpm or About 120 km/h (75 mph) (Inspect and Clean Torque Tube Mount or Install Dampener/Mount Kit) Models: 2002-2004 Buick Rendezvous AWD 2005 Buick Rendezvous AWD (w/LA1 Only) 2002-2005 Chevrolet Venture AWD 2002-2003 Oldsmobile Silhouette AWD 2002-2005 Pontiac Aztek AWD, Montana AWD Supercede: This bulletin is being revised to add a corrective action, one illustration and warranty information. Please discard Corporate Bulletin Number 04-04-17-001A. (Section 04 – Driveline/Axle). Condition Some customers may comment on a noise or vibration that can be heard centered at or around 2100 RPM. This usually occurs at about 120 km/h (75 mph) in 4th gear, but the sound may be audible in all gears when at 2100 RPM. Cause
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 (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.
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