1998 GMC Safari No heat in Van Back or front

1998 GMC SAFARI
170,000 MILES • 6 CYL • AWD • AUTOMATIC
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RICH2336
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  • 1 POST
I have no heat coming out when engin is warmed up, there is aslo no heat from rear heater. Not sure where to look first.
Oct 29, 2008 at 6:56 AM
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2CARPRO JACK
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  • 11,533 POSTS
Be sure the coolant level is full. If so, check to see if all heater hoses are getting hot, even the rear ones located under the van. You may have some restrictions keeping the hot coolant from getting into the heater cores.If so try having the system backflushed by a radiator shop
Oct 29, 2008 at 8:01 AM