2002 Pontiac Grand Am Heater Core

Tiny
MONGOOSE25
  • MEMBER
  • 2002 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 71,000 MILES
Facing the firewall, which line from the heater core is the inlet side? [ Left or right ]
Thursday, October 22nd, 2009 AT 5:17 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Left.

If you have no heat, then with engine at temp, quickley touch both lines, if one is hot and the other is cool, then the core is blocked, if both are cool, then thermostat is bad.
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Saturday, October 24th, 2009 AT 10:23 AM

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