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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Cruise Control Indicator Inoperative

Cruise Control Indicator Inoperative Without Throttle Actuator Control

Step

Action

Values

Yes

No

Schematic Reference: Cruise Control Schematics

Connector End View Reference: Cruise Control Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

--

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn the ignition OFF.
  2. Install a scan tool.
  3. Turn the ignition ON, with the engine OFF.
  4. With the scan tool, Command the Cruise Control Lamp Test parameter ON, in the instrument panel cluster (IPC) Special Functions.

Does the Cruise indicator illuminate in the IPC?

--

Go to Step 3

Go to Step 8

3
  1. Turn the ignition OFF.
  2. Disconnect the cruise control module.
  3. Turn the ignition ON, with the engine OFF.
  4. With a DMM, measure the voltage of the cruise control engaged signal circuit.

Does the voltage measure at approximately the specified voltage?

B+

Go to Step 4

Go to Step 5

4

Test the cruise control engaged signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs .

Did you find and correct the condition?

--

Go to Step 10

Go to Step 7

5

Test the cruise control engaged signal circuit for an open or for a high resistance. Refer to Circuit Testing and to 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 PCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs .

Did you find and correct the condition?

--

Go to Step 10

Go to Step 9

7

Replace the cruise control module. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

--

Go to Step 10

--

8

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

--

Go to Step 10

--

9

Replace the PCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

--

Go to Step 10

--

10

Operate the system in order to verify the repair.

Does the system operate properly?

--

System OK

Go to Step 2

Cruise Control Indicator Inoperative With Throttle Actuator Control

Step

Action

Yes

No

Schematic Reference: Cruise Control Schematics

Connector End View Reference: Cruise Control Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn the ignition OFF.
  2. Install a scan tool.
  3. Turn the ignition ON, with the engine OFF.
  4. With the scan tool, command the Cruise Control Lamp Test parameter On, in the instrument panel cluster (IPC) Special Functions.

Does the Cruise indicator illuminate in the IPC?

Go to Step 4

Go to Step 3

3

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

4

Replace the PCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 5

--

5

Operate the system in order to verify the repair.

Does the system operate properly?

System OK

Go to Step 2