GM Service Manual Online
For 1990-2009 cars only

The air conditioning refrigerant (R-134a) recovery, recycling and recharging system (J 39500-A) completes the following actions with one hookup:

    • Removes Refrigerant-134a from the vehicle A/C system
    • Recycles
    • Recharges

The following actions ensure a constant supply of clean/dry refrigerant for A/C system charging:

    • Single-pass filtering during the recovery cycle
    • Automatic multiple-pass filtering during the evacuation cycle

Important: R-12 and R-134a require separate and non-interchangeable sets of recovery, recycle and recharge equipment. The refrigerants and lubricants are not compatible and cannot be mixed.

Do not attempt to use one set of equipment for both R-12 and R-134a, as all equipment contains residual amounts of refrigerant and/or lubricant. This would contaminate and damage the recover/recycle equipment.

Do not use adapters in order to convert one size fitting to the other. Refrigerant/lubricant contamination will occur and system failure may result.