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 231 (ENGINE CONTROLS - REMOVAL & INSTALLATION)EMISSION SYSTEMS & SUB-SYSTEMSEGR VALVE PIPEREMOVAL
1999 GMC Forward Control 5.7 R, Automatic
EGR Valve Pipe: Removal
1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition off. Apply the parking brake. Raise the front of the vehicle approximately 4" (100 mm) with a floor jack. Remove the two front frame bolts. Do not lower the frame and powertrain more than 4" (100 mm) Slowly lower the frame and powertrain approximately 4" (100 mm) from the underbody rails in order to gain access to the EGR pipe.
- Place two jack stands beneath the frame to prevent any movement of the frame and powertrain assembly. Remove the EGR pipe bolt and the EGR pipe from the EGR valve. See Fig 1 . Loosen the EGR pipe nut in order to remove the EGR pipe from the exhaust manifold. Remove the EGR pipe.
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.