Heating - Lack of Heat to the Driver's Floor Area
90chevy19Number: 90-231-1A
Section: 1A
Date: April 1990
Corp. Bulletin No.: 061101
Subject: LACK OF HEAT TO DRIVER'S FEET
Model and Year: 1989 M VAN 1990 M/L VAN
Some drivers of later 1989 and early 1990 M/L vans may report "cold feet" or a lack of heat to the driver's floor area. This can be caused by an insufficient airflow distribution from the floor outlet assembly to the driver's feet.
A revised floor air outlet assembly has been released for production. Vehicle Identification Number breakpoint is:
1GNDM15Z9LB152071
To correct this condition at the dealership, it is necessary to cut out a small portion of the existing floor air outlet assembly.
Figure No. 1:
INSTRUCTIONS: (Refer to Fig. 1.)
1. Remove engine cover.
2. Detach the floor air outlet assembly (P/N 15601727), located near the gas pedal and engine cover, from the air distributor assembly by removing two screws (P/N 11508917) and two washers (P/N 2077521). Slide the floor air outlet assembly to the right, being careful not to break off the guide retainers molded into the top of the air outlet assembly.
3. Use a hacksaw or other appropriate cutting tool to remove a small four-sided section of the floor air outlet assembly as shown in Figure 1. Cut along the top and the left side of the cut-out area only. A smaller, almost triangular area located between the existing open area and the cut-out area should remain intact.
4. Reinstall the floor air outlet assembly onto the air distributor assembly using the two previously removed screws and washers. Torque the screws to 1.2 to 1.6 N-m (11 to 14 In.Lbs.).
PARTS INFORMATION:
New parts are not necessary unless the existing parts are lost or damaged during removal and replacement. The part numbers listed below are for information purposes only:
PART NUMBER DESCRIPTION OTY/VEHICLE
11508917 Screw 2
2077521 Washer 2
15601727 Floor Air Outlet Asm. 1
Parts are currently available from GMSPO.
LABOR OPERATION INFORMATION:
For vehicles repaired under warranty use:
Labor Operation Number: T8140
Labor Time: 0.5 hr.
*Labor operation is coded to base vehicle coverage in the warranty system.