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 & INSTALLATIONTHERMO ELEMENTINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic
THERMO Element: 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.
- Use the Thermo Element Height Gage (J-34094-A) to set the middle thermo pin (123). See Fig 1 . Install the new thermo element plate (122). Install the pin and washer (120).
- Use the thermo element height gage to set the height of the pin and washer (120) furthest from the accumulator. Use the thermo element height gage to set the height of the second pin and washer (120).
- Carefully install the thermo element (121) between the 2 pin and washers (120). The "V" in the thermo element (121) must contact the thermo element plate (122). Install the oil pan. See DRAINING & REFILLING under LUBRICATION. Fill transaxle with appropriate fluid to proper level. See LUBRICATION .
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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.