Diagnostic System Check - Cruise Control. Chevrolet Tahoe

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Tahoe - 2WD 🢒 Body and Accessories 🢒 Cruise Control 🢒 Diagnostic System Check - Cruise Control

Description

The Cruise Control Diagnostic System Check is an organized approach to identifying a condition created by an electronic control system failure. The Diagnostic System Check directs the service technician to the next logical step in diagnosing the concern. Understanding the system, the table, and using it correctly reduces diagnostic time and prevents misdiagnosis. For a review of the cruise control system, refer to Cruise Control Description and Operation .

Test Description

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

Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.

Step	Action	Yes	No
1	Install a scan tool. Does the scan tool power up?	Go to Step 2	Go to Scan Tool Does Not Power Up in Data Link Communications
2	Turn ON the ignition, with the engine OFF. Attempt to establish communication with the body control module (BCM) and powertrain control module (PCM). Does the scan tool communicate with the powertrain control module?	Go to Step 3	Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications
3	Select the BCM and PCM display DTCs function on the scan tool. Does the scan tool display any DTCs?	Go to Step 4	Go to Symptoms - Cruise Control
4	Does the scan tool display any DTCs which begin with a "U"?	Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications	Go to Step 5
5	Does the scan tool display DTC B1000?	Go to Diagnostic Trouble Code (DTC) List in Body Control System	Go to Step 6
6	Does the scan tool display any DTCs that begin with a "C"?	Go to Diagnostic Trouble Code (DTC) List in Antilock Brake System	Go to Step 7
7	Does the scan tool display DTC P0567, P0568, P0571?	Go to Diagnostic Trouble Code (DTC) List	Go to Step 8
8	Does the scan tool display any DTCs which begin with a "P"?	Go to Diagnostic Trouble Code (DTC) List in Engine Controls-4.3 L, Diagnostic Trouble Code (DTC) List in Engine Controls-4.8,5.4,6.0 L, Diagnostic Trouble Code (DTC) List in Engine Controls-6.6 L or Diagnostic Trouble Code (DTC) List in Engine Controls-8.1 L	Go to Symptoms - Cruise Control