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 for GMC Truck GMC P42 Commercial Chassis 1999

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