2005 Buick Rendezvous Constant clunking with take-off and s

JVBAKER

MEMBER
2005 BUICK RENDEZVOUS
6 CYL
AWD
AUTOMATIC
124,889 MILES

I have had my car into an authorized GM dealer 3 times in the last 2 weeks, and now they are telling me that they don't know what's wrong with the car after I've spent 1300 dollars for repairs and the car is still doing the same thing. AWD Disabled light on, anti-lock light on, check engine soon light on, when driving, the car makes a clunking noise and then jerks into the next gear, and then will top out at 45-50 mph. I can push the gas pedal to the floor and build up the RPMs, but it won't go faster than 45-50. Originally was told it was the brakes and rotors in the rear. Had the brakes, rotors, tye-rod, and tires all replaced just to cover it. Same problem. Then was told it was a wiring harness, had that replaced. Still have same problem, and dealership says they don't know what to do. Is it my transmission? No codes came up for that. Just the evap sensor.

1 Reply

MERLIN2021

MECHANIC
17,250 POSTS

It's a known water leak problem, find the plug at the rear of the drivers seat, pull it apart and dry out the water, then seal it against water intrusion. Here's the tech bulliten on it from GM:
Hard/No Start, Fuel Gauge Inoperative/Fluctuates, SES/Check Engine Light On, ABS Warning Light On, TCS Warning Light On, TCS Activation, Service Traction System Message Displayed, All-Wheel Drive Disable Message Displayed, DTCs Set (Repair Connector) TECHNICAL SERVICE BULLETIN Reference Number(s): 01-08-45-005E, � Date of Issue: � August 29, 2006 Related Ref Number(s): 01-08-45-005, 01-08-45-005A, 01-08-45-005B, 01-08-45-005C, 01-08-45- 005D, 01-08-45-005E ARTICLE BEGINNING CONDITION Some customers may comment on one or more of the following conditions: � � � Engine is hard to start � � � Engine will not start � � � Engine starts then stalls � � � Fuel gauge is inoperative or fluctuates � � � Service Engine Soon/Check Engine light is illuminated � � � ABS Warning Light is illuminated � � � TCS Warning Light is illuminated � � � TCS activation � � � Service Traction System message displayed � � � All-Wheel Drive Disable message displayed These conditions may be intermittent. Upon investigation, the technician may find various DTCs set. CAUSE This condition may be due to water leaking into the interior of the vehicle, and/or spread terminals, at connector C305 that is located on the floor to the rear of the driver's seat. This connector is not sealed from the inside of the vehicle and water may enter the connector causing the terminals to become corroded. Also, the female terminals of the connector may have become spread apart causing an intermittent poor connection. CORRECTION Affected Model(s): 2002-2006 Buick Rendezvous; 2005-2007 Buick Terraza; 2000-2005 Chevrolet Venture; 2005-2007 Chevrolet Uplander; 2000-2004 Oldsmobile Silhouette; 2000- 2005 Pontiac Montana; 2001-2005 Pontiac Aztek; 2005-2007 Pontiac Montana SV6; 2005-2007 Saturn Relay Supercedes: This bulletin is being revised to add 2007 model year. Also, additional information was added to the Important statement. Please discard Corporate Bulletin Number 01- 08-45-005D (Section 8 - Body and Accessories). Page 1 of 2 Hard/No Start, Fuel Gauge Inoperative/Fluctuates, SES/Check Engine Light On, ABS Wa. 4/16/2009 Repair any corroded and/or spread female terminals in connector C305. Refer to Repairing Connector Terminals in the Wiring Systems sub-section of the appropriate service information. WARRANTY INFORMATION For vehicles repaired under warranty, use: Warranty Information
IMPORTANT: � � � Inspect the terminals at connector C305 for corrosion or spreading before replacing the fuel module or resistor card kit. Terminals can be accessed from underneath the vehicle. � � � Do not attempt to repair any spread female terminals as this will result in a return repair. The female terminal must be replaced. � � � If the terminals show signs of corrosion, determine the source of the water leak first and repair the water leak before repairing the terminals in connector C305. Refer to Corporate Service Bulletin Number 01-01-38-009A to determine a potential source for water in the vehicle interior. Labor Operation Description Labor Time N6606 Wiring and/or Connector - Repair or Replace, Fuel System Use Published Labor Operation Time