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 MANUALSCHEVROLET1998EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACCOMPRESSOR CONTROL VALVE ASSEMBLYSERVICE AND REPAIRCONVENTIONAL MOUNTED
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Conventional Mounted
1998 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Conventional Mounted
Remove or Disconnect
1. Recover refrigerant using J 39500-GM.
2. Remove control valve retaining ring using J 5403 internal snap ring pliers.
3. Remove control valve assembly.
Install or Connect
1. When reassembling control valve, coat O-rings with 525 viscosity refrigeration oil and push in place with thumb pressure.
2. Using J 5403 snap ring pliers, install valve retaining ring with high point of curved sides against valve housing. Be sure retaining ring is properly seated in ring groove.
3. Evacuate and recharge the system.
4. Leak test referring to "Compressor Leak Testing".
RENDER: 1.0x
NO RELATED
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Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.