For 1990-2009 cars

# HVAC Lack of Performance/Single A/C System Only (Evacuate/Recharge A/C System)

Subject: | HVAC Lack of Performance -- Single A/C System Only (Evacuate & Recharge A/C System)

Models: | 1998-2000 Chevrolet Venture

| 1998-2000 Oldsmobile Silhouette

| 1998-2000 Pontiac Trans Sport

| With C60 Air Conditioner Frt, Manual Controls (Not C34)

| Built from SOP thru VIN Breakpoint YD150489 for 2000 Models Only

### Condition

Some customers may comment on a lack of performance of the air conditioning system in hot, humid weather.

### Cause

This condition may be due to an undercharged air conditioning system during the vehicle assembly process.

### Correction

1. Perform the Cooling Insufficient, A/C System check. Refer to the HVAC Systems-Manual sub-section of the Service Manual. If a condition is identified, make the appropriate repair. If no abnormal condition is identified, proceed to the next step.
2. Evacuate and recharge the A/C system with 1.08 kg (2.375 lbs) of R-134a.
3. Replace the A/C evaporator label with P/N 10443319. This label will allow future service technicians to know how much refrigerant is required by the system.
4. Inspect/test the A/C system for signs of leaks, both visually and with the A/C leak tester.
5. If a leak is found, perform the recommended repair. Refer to the HVAC Systems-Manual sub-section of the Service Manual.
6. If no leaks are found, perform the Cooling Insufficient, A/C System check. Refer to the HVAC Systems-Manual sub-section of the Service Manual. If a condition is identified, make the appropriate repair. If no abnormal condition is identified, return the vehicle to the owner.

### Parts Information

Part Name | Part Number
--- | ---
Label | 10443319

Parts are currently available from GMSPO.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
D4702 | HVAC System Check | 0.6* hr

*The 0.6 hr includes the time required to install the new label.

If an evacuate and recharge was required, add 0.9 hr to the base time for evacuating and recharging the HVAC System.

This is a unique Labor Operation Number for use only with this bulletin. This number will not be published in the Labor Time Guide.