gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Heating - Lack of Heat to Driver's Floor Area|Page 5766 > < A/C - Insufficient Heating and Cooling|Page 5760
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Air Duct: All Technical Service Bulletins
Heating - Lack of Heat to Driver's Floor Area

GMC NUMBER:

90-1A-52

GROUP:

1A Heating and Ventilation

DATE:

April, 1990

CORPORATE
NUMBER:

061101

SUBJECT:

LACK OF HEAT TO DRIVER'S FLOOR AREA/COLD FEET

MODELS:

1989-1990 M/L VANS

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 breakpoints are:
GMC

1GKDM15ZOLB517220

Chevrolet     

1GNDM15Z9LB152071

To correct this condition at the dealership, it is necessary to cut out a small portion of the existing floor air outlet assembly.

Heating - Lack of Heat to Driver's Floor Area|Page 5766 > < A/C - Insufficient Heating and Cooling|Page 5760