GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 S10 - Electric 🢒 Body and Accessories 🢒 Cruise Control 🢒 Does Not Resume, Accelerate,or Tap Up or Down

Step

Action

Value(s)

Yes

No

1

Was the Cruise Control System Check performed?

--

Go to Step 2

Go to Cruise Control System Check

2

Inspect the power inverter module for a faulty connection.

Are the connections OK?

--

Go to Step 4

Go to Step 3

3

Repair or clean the connections as necessary.

Is the repair complete?

--

Go to Cruise Control System Check

--

4
  1. Disconnect the power inverter module electrical connector.
  2. Turn the ignition switch to the RUN position.
  3. Move the cruise control switch to the ON position.
  4. Connect a test lamp from cavity 25 of CKT 87 (GRY/BLK) to ground.
  5. Press and hold the RESUME/ACCEL switch.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5

Repair the open in CKT 87 (GRY/BLK) between the power inverter module and the cruise control switch.

Is the repair complete?

--

Go to Cruise Control System Check

--

6
  1. Connect a test lamp from cavity 9 of CKT 84 (DK BLU) to ground.
  2. Press and hold the SET COAST switch.

Does the test lamp light?

--

Go to Step 8

Go to Step 7

7

Locate and repair open in CKT 84 (DK BLU) between the power inverter module and the cruise control switch.

Is the repair complete?

--

Go to Cruise Control System Check

--

8

Replace the power inverter module.

Is the repair complete?

--

Go to Cruise Control System Check

--