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 599 (HEATING, VENTILATION AND AIR CONDITIONING)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
1999 GMC Forward Control 5.7 R, Automatic
Fastener Tightening Specifications
1999 GMC Forward Control 5.7 R, AutomaticSECTION Fastener Tightening Specifications
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.
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| A/C Refrigerant Filter Flare Nut | 15 N.m | 11 lb ft |
| A/C Refrigerant Pressure Sensor | 5 N.m | 44 lb in |
| Actuator Screws, All | 0.9 N.m | 8 lb in |
| Air Baffle Bolts | 20 N.m | 15 lb ft |
| Air Distributor Cover Screws | 0.9 N.m | 8 lb in |
| Air Inlet Housing Screws | 0.9 N.m | 8 lb in |
| Blower Motor Mounting Screws | 1.8 N.m | 16 lb in |
| Blower Motor Resistor Mounting Screws | 1.8 N.m | 16 lb in |
| Center Air Distribution Duct Retaining Nut | 10 N.m | 89 lb in |
| Compressor Mounting Bolts | 50 N.m | 37 lb ft |
| Condenser Mounting Bolts | 6 N.m | 53 lb in |
| Condenser Tube Clip Bolt | 2.5 N.m | 22 lb in |
| Cruise Control Module Mounting Bracket Bolts | 6 N.m | 53 lb in |
| Discharge Hose to Compressor Nut | 16 N.m | 12 lb ft |
| Discharge Hose to Condenser Nut | 16 N.m | 12 lb ft |
| Evaporator Inlet Tube to Condenser Bolt | 16 N.m | 12 lb ft |
| Evaporator Inlet Tube Clamp Nut | 3.3 N.m | 89 lb in |
| Evaporator Outlet Tube Bracket Bolt | 5.5 N.m | 49 lb in |
| Evaporator Outlet Tube to Thermal Expansion Valve Nut | 16 N.m | 12 lb ft |
| Floor Duct Retaining Nuts | 10 N.m | 89 lb in |
| Heater Core Cover Screws | 0.9 N.m | 8 lb in |
| Heads Up Display Module Bolts | 2 N.m | 18 lb in |
| Heater Core Pipe Retaining Screw | 0.9 N.m | 8 lb in |
| Heater Inlet Pipe Bracket Nut | 7 N.m | 62 lb in |
| Heater Outlet Duct Screws | 0.9 N.m | 8 lb in |
| Heater Pipe Bolts - LY7 Engine | 10 N.m | 89 lb in |
| HVAC Module Mounting Screws | 0.9 N.m | 8 lb in |
| HVAC Module to Dash Panel Sound Barrier Nuts | 10 N.m | 89 lb in |
| HVAC Mounting Bracket Screws | 1.8 N.m | 16 lb in |
| Instrument Panel Compartment Hinge Screws | 4 N.m | 35 lb in |
| Knee Bolster Screws | 2.2 N.m | 22 lb in |
| Mode Actuator Mounting Bracket Screws | 0.9 N.m | 8 lb in |
| Receiver Dehydrator Lower Mounting Bolts | 6 N.m | 53 lb in |
| Receiver Dehydrator Upper Bracket Bolt | 6 N.m | 53 lb in |
| Right Hand Temperature Actuator Mounting Bracket Screws | 0.9 N.m | 8 lb in |
| Service Port | 11 N.m | 98 lb in |
| Suction Hose to Compressor Nut | 16 N.m | 12 lb ft |
| Suction Hose to Evaporator Outlet Tube Bolt | 16 N.m | 12 lb ft |
| Temperature Door Lever Bolt | 0.9 N.m | 8 lb in |
| Thermal Expansion Valve to Evaporator Core Mounting Bolts | 3.2 N.m | 28 lb in |
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.