GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 Seville 🢒 Body and Accessories 🢒 Keyless Entry 🢒 Diagnostic System Check - Remote Keyless Entry

Step

Action

Value(s)

Yes

No

1
  1. Install a scan tool.
  2. Turn ON the ignition switch.
  3. Attempt to establish communications with the vehicle.

Does the scan tool communicate with the vehicle?

--

Go to Step 2

Go to Data Link Communications System Check

2

Attempt to establish communications with the remote keyless entry module.

Does the scantool communicate with the RKE module?

--

Go to Step 3

Go to Keyless Entry System Inoperative

3

Request the scan tool to display RKE DTC's.

Are any current RKE DTC's present?

--

Go to Diagnostic Trouble Code (DTC) List/Type

Go to Remote Keyless Entry System Check