Scan Tool Data List

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Powertrain Control Module (PCM) Scan Tool Data List

Scan Tool Parameter	Data List	Units Displayed	Typical Data Value
Ignition ON/Engine OFF
Ignition 1 Signal	Engine 1,2 Data	Volts	9-14v
GEN L-Terminal Signal Command	Engine 2 Data	OK/No Output	OK
GEN F-Terminal Signal	Engine 2 Data	%	10-90%