Diagnostic Aids

Water or foreign material in the fuel can cause a no-start condition during freezing weather. Engine may start after 5-6 minutes in a heated shop. Problem may not reoccur until vehicle is parked overnight in freezing temperatures. Ensure connections are not contaminated, corroded or damaged.

Fig 1: Chart A-3, Flow Chart, Cranks But Won't Run, W/O ESC

Courtesy of GENERAL MOTORS CORP.

Fig 2: Chart A-3, Schematic, Cranks But Won't Run, W/O ESC

Courtesy of GENERAL MOTORS CORP.