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 91 (ENGINE CONTROLS - REMOVAL & INSTALLATION, OVERHAUL)EMISSION SYSTEMS & SUB-SYSTEMSEGR VALVE PIPEINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic
EGR Valve Pipe: Installation
1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Install the EGR valve inlet pipe assembly. Install the mounting bolt and the stud to the EGR valve inlet pipe bracket. Tighten the bolt and stud to specification. See TORQUE SPECIFICATIONS .
- Install the EGR valve inlet pipe bolt to the exhaust manifold. Tighten the bolt to specification. Install EGR valve outlet pipe. See REMOVAL & INSTALLATION (3.8L - OUTLET PIPE) .
- If applicable, install the AIR pump outlet pipe. See SECONDARY AIR INJECTION PUMP OUTLET PIPE/HOSE . Install the EGR valve. See EGR VALVE .
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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.