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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 56 (POWER SEAT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2765TEST DESCRIPTION
2009 Chevrolet Tahoe Base, 4.8 C

Test Description

2009 Chevrolet Tahoe Base, 4.8 CSECTION Test Description
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

DTC B2765

Step Action Yes No
Schematic Reference: Driver Seat Schematics 
Connector End View Reference: Power Seat Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, observe the Memory Recall Switches parameter in the DDS Input data list.
Does the scan tool display Idle?		 Go to Step 3  Go to Step 4 
3
  1. Activate the any one of the memory switches.
  2. With a scan tool, observe the Memory Recall Switches parameter.
Did the Memory Recall Switches parameter change state?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 4 
4
  1. Turn OFF the ignition.
  2. Disconnect the memory switch connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Memory Recall Switches parameter.
Does the scan tool display battery voltage?		 Go to Step 7  Go to Step 5 
5 Test the memory switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 6 
6 Inspect for poor connections at the harness connector of the DDS. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 8 
7 Inspect for poor connections at the harness connector of the memory switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 9 
8 Replace the DDS. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 10  -
9 Replace the memory switch. Refer to Driver Seat Adjuster Memory Switch Replacement .
Did you complete the replacement?		 Go to Step 10  -
10
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.