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 130 (AUTOMATIC TRANSAXLE SERVICING)REMOVAL & INSTALLATIONCONTROL VALVE BODYINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic
Control Valve Body: Installation
1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Install the ball check valves (372) into the case cover. See Figure . Use the (J-36850) Transjel(tm) to retain the ball check valves in their proper locations. Install the gasket and the spacer plate (370). See Figure .
- Install the ball check valves (372 and 373) into the valve body. See Figure . Use Transjel(tm) to retain the ball check valves in their proper locations.
- Install the gasket (371) and the valve body (300). See Figure . Install the valve body bolts (374-381 and 384). See Figure .
- Tighten the valve body bolts as follows:
- M6 X 1.0 X 20 - 70 INCH lbs. (8 N.m).
- M6 X 1.0 X 30 - 106 INCH lbs. (12 N.m).
- M6 X 1.0 X 45 - 106 INCH lbs. (12 N.m).
- M6 X 1.0 X 55 - 97 INCH lbs. (11 N.m).
- M6 X 1.0 X 60 - 106 INCH lbs. (12 N.m).
- M6 X 1.0 X 65 - 106 INCH lbs. (12 N.m).
- M6 X 1.0 X 85 - 97 INCH lbs. (11 N.m).
- M6 X 1.0 X 90 - 97 INCH lbs. (11 N.m).
- M8 X 1.0 X 90 - 18 ft. lbs. (25 N.m).
- DO NOT use impact type tools on the valve body or on the oil pump. Install the oil pump. See OIL PUMPΒ . Install the case side cover. See CASE SIDE COVERΒ .
NOTE:
Do not use impact type tools on the valve body or on the oil pump.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.