Conditions for Enabling Cruise Control
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
- The vehicle speed is greater than 40 km/h (25 mph).
- The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
- The system voltage is between 12 volts and 16 volts.
Cruise Control Inoperative/Malfunctioning (4.2L)
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference : Cruise Control Schematics Connector End View Reference: Powertrain Control Module (PCM) Connector End Views in Engine Controls - 4.2L |
|||
| 1 | Did you perform the Cruise Control Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Cruise Control |
| 2 |
|
Go to Step 3 | Go to Step 6 |
| 3 |
|
Go to Step 4 | Go to Step 7 |
| 4 |
|
Go to Step 5 | Go to Step 13 |
| 5 |
|
Go to Diagnostic Aids | Go to Step 14 |
| 6 |
|
Go to Step 8 | Go to Step 16 |
| 7 |
|
Go to Step 12 | Go to Step 9 |
| 8 | Test the cruise control on switch signal circuit for a short to voltage. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 17 |
| 9 | Test the cruise control on switch signal circuit for a short to ground. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 10 |
| 10 | Test the cruise control set/coast switch signal circuit for a short to ground. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 11 |
| 11 | Test the cruise control resume/accelerate switch signal circuit for a short to ground. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 15 |
| 12 | Test the cruise control on switch signal circuit for an open or for a high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 16 |
| 13 | Test the cruise control Set/Coast signal circuit for an open or for a high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 16 |
| 14 | Test the cruise control Resume/Accelerate signal circuit for an open or for a high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 16 |
| 15 | Repair the open, the high resistance, or the short to ground in the ignition 3 voltage circuit. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 20 | - |
| 16 | Inspect for poor connections at the harness connector of the multifunction turn signal lever. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 18 |
| 17 | Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections
and toConnector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 19 |
| 18 | Replace the multifunction turn signal lever. Refer to Multifunction, Turn Signal Switch Replacement
in Steering Wheel and Column. Did you complete the replacement? |
Go to Step 20 | - |
| 19 |
IMPORTANT:
Program the replacement PCM. Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement
in Engine Controls-4.2LDid you complete the replacement? |
Go to Step 20 | - |
| 20 | Operate the vehicle within the conditions for cruise control operation. Does the cruise control system operate properly? |
System OK | Go to Step 2 |