gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Reference Signal <--> [Cranking Signal]|Description and Operation|Page 2450 > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 2446
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Reference Signal: Description and Operation

 Crank Signal

The ECM/PCM uses this signal to tell when the vehicle is in the STARTING mode.  This information is used to allow enrichment and cancel diagnostics
while engine is cranking.

Reference Signal <--> [Cranking Signal]|Description and Operation|Page 2450 > < Coolant Temperature Sensor/Switch (For Computer)|Specifications|Page 2446