Cold Advance Relay

WARNING: This page does not describe the selected car, but rather 35 other vehicles, including the 1992 Pontiac Trans Sport, 1992 Oldsmobile Silhouette, 1992 Oldsmobile Bravada, 1992 GMC Yukon, and 1992 GMC Vandura Special. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect harness connector to cold advance relay. Using an ohmmeter, check resistance between relay terminals "D" and "F". See Fig 1. Continuity should be present or a resistance of 20 ohms. If not, replace cold advance relay.
Using an ohmmeter, check continuity between relay terminals "A" and "E". Continuity should not be present. If continuity is present, replace grounded cold advance relay.

Fig 1: Cold Start Advance System Schematic (Typical)

Courtesy of GENERAL MOTORS CORP.