Shift Warning Not Operating Properly

WARNING: This page is about a different car, the 1999 GMC Sierra and 1999 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

For test procedures, see Fig 1 .

Fig 1: Shift Warning Not Operating Properly

Courtesy of GENERAL MOTORS CORP.

NOTE: For Powertrain On Board Diagnostic (OBD) System Check, see ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK in SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.