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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 547 (ENGINE CONTROLS - 3.4L - INTRODUCTION - SERVICE & REPLACEMENT)DESCRIPTION AND OPERATIONEXHAUST GAS RECIRCULATION (EGR) SYSTEM DESCRIPTIONLINEAR EGR VALVE
1999 GMC Forward Control 5.7 R, Automatic
Linear EGR Valve
1999 GMC Forward Control 5.7 R, AutomaticSECTION Linear EGR Valve
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The linear EGR valve consists of the following:
- The EGR valve position sensor
- The EGR valve position sensor cap
- The bobbin and coil assembly
- The valve pintle
- The primary pole piece
- The armature sleeve
- The armature and base assembly
- The exhaust gas inlet port
- The exhaust gas outlet port
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.