Hummer H1 Service Manual page 1078

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Engine Cranks But Will Not Start
Step
15 1. Turn the ignition "ON," engine "OFF."
2. Verify the fuel solenoid is still disconnected.
3. Probe ignition feed circuit (terminal D) at the fuel sole-
noid harness connector with a test light connected to
ground.
Is test light "ON"?
16 Replace fuel injection pump.
Is the action complete?
17 Injection system OK,
18 Check the fuel inject control circuit for an open or ground
between the fuel solenoid driver and the PCM.
Was a problem found?
19 Check the closure ground circuit for an open between the
fuel solenoid driver and the PCM.
Was a problem found?
20 Inspect the fuel solenoid driver connector and PCM con-
nector for proper connection.
Was a problem found?
21 Repair the open in the ignition feed circuit.
Is action complete?
22 Repair the circuit as necessary.
Is the action complete?
23 Make appropriate repairs.
Is action complete?
24 Replace the faulty PCM.
NOTE: If the PCM is faulty, the new PCM must be
programmed. Go to PCM replacement and pro-
gramming procedures.
Is the action complete?
25 1. Using the Scan Tool, select "DTC," "Clear Info."
2. Attempt to start engine.
Does the engine start and continue to run?
26 1. Allow engine to idle until normal operating tempera-
ture is reached.
2. Select "DCT," "Fail this Ign."
Are any DTCs displayed?
27 Using the scan tool, select "Capture Info," Review Info."
Are any DTCs displayed that have not been diagnosed?
05745159
Action
PCM/Tech 1 Scan Tool 13
Value(s) Yes
— Go to Step 16
— Go to Step 25
— —
— Go to Step 22
— Go to Step 22
— Go to Step 22
— Go to Step 25
— Go to Step 25
— Go to Step 25
— Go to Step 25
— Go to Step 26
— Go to Step 27
— Go to the applica-
ble DTC table
No
Go to Step 21
—
—
Go to Step 20
Go to Step 20
Go to Step 24
—
—
—
—
Go to Step 2
—
System OK