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 MANUALSCHEVROLET1996SPORTVAN VAN PASSENGER EXTENDED, 6.5 YREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 44 (ENGINE CONTROLS - TESTS W/CODES - 6.5L DIESEL)DIAGNOSTIC TROUBLE CODE CHARTSDTC 45, EGR VENT ERRORNOTES
1996 Chevrolet Sportvan Van Passenger Extended, 6.5 Y
DTC 45, EGR Vent Error: Notes
1996 Chevrolet Sportvan Van Passenger Extended, 6.5 YSECTION Notes
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1995 GMC Yukon, 1995 GMC Suburban, 1995 GMC Pickup, 1995 GMC Cab & Chassis, and 1995 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
When PCM recognizes operating range for no EGR, PCM energizes EGR vent solenoid which allows rapid venting of EGR vacuum. This solenoid is normally open. DTC 45 will set when:
- Ignition voltage is present on EGR vent control circuit when EGR vent is commanded on.
Or
- No ignition voltage is present on EGR vent control circuit when EGR vent is commanded off.
PCM will default to shut off EGR system.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- This step determines if DTC 45 is result of a hard failure or an intermittent condition.
- This step checks if PCM and wiring are okay.
- This step checks power and control circuits.
RENDER: 1.0x
NO RELATED
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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.