A/C - No Difference Between Low/Medium BLower Speed

90pontiac15
Bulletin Number: 90-8-24
Reference Number: 078106R
Publish Date: 6/90
Subject: NO BLOWER SPEED CHANGE LOW TO MEDIUM (CORRECT WIRING)

Models ALL 89-90 SUNBIRD AND 1988-89 GRAND AM
Affected: MODELS 2.0L TURBO, ALL W/C41


CONDITION:

There have been some customer comments of no medium blower speed on standard heater (C-41) equipped vehicles. The blower functions normally on high speed but there is no apparent difference in air flow between low and medium speed.

CAUSE:

The 51 circuit and the 52 circuit wires at the blower motor resistor, cavities D and B, are reversed.

CORRECTION:

Refer to service manual 8A-60-0 for proper wiring procedure.

WARRANTY INFORMATION:

Labor Operation Number: N6310
Labor Time : 0.5 Hour
Trouble Code : 92