GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Body and Accessories 🢒 Cruise Control 🢒 Does Not Resume, Accelerate,or Tap Up or Down

Does Not Resume, Accelerate,or Tap Up or Down Gasoline

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the cruise control module.
  2. Connect a test light from the cruise control module connector, cavity C to ground.
  3. Turn the ignition switch to the RUN position.
  4. Press and hold the cruise control switch to the RESUME/ACCEL position.

Did the test light illuminate?

--

Go to Step 2

Go to Step 3

2

Replace the cruise control module.

Is the repair complete?

--

System OK

--

3
  1. Connect a test light from the cruise control switch pigtail connector, cavity C to ground. Refer to Using Connector Test Adapters in Wiring Systems.
  2. Press and hold the cruise control switch to the RESUME/ACCEL position.

Did the test light illuminate?

--

Go to Step 4

Go to Step 5

4

Repair the open in CKT 87 (GRY/BLK) between the cruise control switch pigtail connector, cavity C and the cruise control module connector, cavity C.

Is the repair complete?

--

System OK

--

5

Replace the cruise control switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column-Tilt.

Is the repair complete?

--

System OK

--

Does Not Resume, Accelerate,or Tap Up or Down Diesel

Cruise Control Does Not Resume, Accelerate, Tap-Up, or Tap-Down

Refer to Cruise Control Diagnosis in Engine Controls--6.5L--L65