Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999CUTAWAY 7.4 JREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - TESTS W/CODES - DTC P0352-P0452DTC P0372DTC P0372: IGNITION CONTROL (IC) MODULE 24X REFERENCE CIRCUIT-MISSING PULSES (4.0L "G" BODY & 4.6L "E" & "K" BODIES)CIRCUIT DESCRIPTION
1999 Chevrolet Cutaway 7.4 J
Circuit Description
1999 Chevrolet Cutaway 7.4 JSECTION Circuit Description
This test checks for less than 48 pulses between CAM pulses. If pulses vary between too few or too many of the allowed range between CAM events, DTC will set. Conditions for setting DTC:
- DTC P1376 not set.
- At least one CAM pulse received in the last 0.25 second.
- Engine speed 496-3500 RPM.
- Number of CAM edges since key on is 7 or greater.
- Eight 24X pulses seen between cam pulses.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.