Speedometer and/or Odometer Inaccurate or Inoperative. GMC Truck Canyon Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2007 🢒 Canyon Pickup - 4WD 🢒 Driver Information and Entertainment 🢒 Displays and Gages 🢒 Speedometer and/or Odometer Inaccurate or Inoperative

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

The instrument panel cluster (IPC) displays the vehicle speed based on the information from the powertrain control module (PCM). The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The PCM sends the vehicle speed information via class 2 serial data circuit to the IPC in order to display the vehicle speed and miles traveled.

Diagnostic Aids

Check for the following DTCs:

•	DTC B1000 , DTC B1007 , and DTC B1009

•	DTC U1000 and U1255 and DTC U1001-U1254

Reference Information

Schematic Reference

Instrument Cluster Schematics

Connector End View Reference

Displays and Gages Connector End Views

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Scan Tool Data List

Circuit/System Testing

Ignition OFF, raise the vehicles drive wheels.
Engine ON, transmission in drive, verify the scan tool Vehicle Speed Sensor parameter matches the speedometer display.

⇒	If the Vehicle Speed Sensor parameter does not match the speedometer display, replace the IPC.

Verify that the odometer is operating properly.

⇒	If the odometer is not operating properly, replace the IPC.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for IPC replacement, setup, and programming