I assume you refer to the vents at the rear of the van on all models, and
not the vents in the rear windows on '88+.

These vents provide fresh air to the engine, and the right side vent is
connected to the intake tube for air entering the engine, for combustion.

Ryan

don spence said:
> If the description below is accurate, what is the purpose of the rear
> pillar vents?

>> Subject: Re: heater controls
>>
>> If you Google it, you'll find:
>>
>> http://www.gowesty.com/flow-thru_ventilation.html  and
>> maybe others.  M
>