Info - Diagnosing Poor A/C Performance - A/C Stops Blowing Cold, A/C Cycles On and Off
| Subject: | Diagnosing Poor A/C Performance -- A/C Stops Blowing Cold, A/C Cycles On and Off |
| Models: | 2002-2003 Chevrolet TrailBlazer EXT |
| 2002-2003 GMC Envoy XL |
| with Automatic or Manual HVAC Auxiliary Temperature Control (RPOs CJ2 or CJ3) |
This bulletin is being revised to include the underhood label part number. Please discard Corporate Bulletin Number 02-01-39-006 (Section 01 -- HVAC).
Some of the above listed vehicles may exhibit poor A/C performance due to an overcharged system. If the A/C system is overcharged, it may cause the A/C to stop blowing cold after extended idle or while driving in slow traffic at high ambient temperatures.
It has been found that the underhood label containing the A/C charge specification is incorrect. The correct specification should read System Charge with Front and Rear - 1.20 kg (2.65 lbs). Use this new charge specification whenever the A/C system is serviced. Install new label, P/N 15103173.
Parts Information
Part Number | Description |
|---|---|
15103173 | Label -- Infl. Rt. & M/Func. |
Parts are currently available from GMSPO.
