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 MANUALSCHEVROLET1999PICKUP C2500, 2D PICKUP, 6.5 F, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 671 (HEATING, VENTILATION AND AIR CONDITIONING)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
1999 Chevrolet Pickup C2500, 2D Pickup, 6.5 F, Standard
Fastener Tightening Specifications
1999 Chevrolet Pickup C2500, 2D Pickup, 6.5 F, StandardSECTION Fastener Tightening Specifications
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| A/C Compressor Lower Bolt - 3.1L | 50 N.m | 37 lb ft |
| A/C Compressor Bracket Lower Bolt - 3.8L | 50 N.m | 37 lb ft |
| A/C Compressor Bracket Upper Bolt - 3.8L | 50 N.m | 37 lb ft |
| A/C Compressor Front Nuts - 3.8L | 100 N.m | 74 lb ft |
| A/C Compressor Hose to A/C Compressor Nut/Bolt | 33 N.m | 24 lb ft |
| A/C Compressor Hose to A/C Condenser Nut | 16 N.m | 12 lb ft |
| A/C Compressor Hose to Accumulator Nut | 16 N.m | 12 lb ft |
| A/C Compressor Pressure Relief Valve | 9 N.m | 80 lb in |
| A/C Refrigerant Pressure Sensor | 4.7 N.m | 41 lb in |
| Accumulator Bracket Bolt | 4 N.m | 36 lb in |
| Air Distributor Case Cover Screws | 1.5 N.m | 13 lb in |
| Air Duct Bolts | 10 N.m | 89 lb in |
| Air Duct Center Screw | 1.8 N.m | 16 lb in |
| Blower Motor Bolts | 1.3 N.m | 12 lb in |
| Blower Motor Resistor Bolts | 1.5 N.m | 13 lb in |
| Evaporator Core Block Fitting Bolt | 16 N.m | 12 lb ft |
| Heater Core Cover Screws | 1.5 N.m | 13 lb in |
| Heater Core Line Clamp Screw | 1.5 N.m | 13 lb in |
| Heater Core Mounting Clip Screw | 1.5 N.m | 13 lb in |
| Heater Core Outlet Cover Screws | 1.5 N.m | 13 lb in |
| Heater Hose Support Bracket Nut - 3.8L | 4.5 N.m | 40 lb in |
| Heater Inlet Pipe Adapter Bolt - 3.8L | 7 N.m | 62 lb in |
| Heater Inlet Pipe Nut-3.1L | 7 N.m | 62 lb in |
| Heater Outlet Pipe Adapter Bolt - 3.8L | 7 N.m | 62 lb in |
| HVAC Module to Dash Bolts/Nuts | 10 N.m | 89 lb in |
| HVAC Module Upper Case Screws | 1.5 N.m | 13 lb in |
| Liquid Line at Block Fitting Bolt | 16 N.m | 12 lb ft |
| Liquid Line Nut at Condenser | 27 N.m | 20 lb ft |
| Liquid Line Nut at Orifice | 27 N.m | 20 lb ft |
| Recirculation Housing Screws | 1.5 N.m | 13 lb in |
| Service Valve | 12 N.m | 106 lb in |
| Suction Hose at Block Fitting Bolt | 16 N.m | 12 lb ft |
| Suction Hose Nut at Accumulator | 47 N.m | 35 lb ft |
| Vacuum Tank Screws | 1.5 N.m | 13 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.