2000 GMC Jimmy No Heat!

LOXLEY_72

MEMBER
2000 GMC JIMMY
6 CYL
4WD
AUTOMATIC
100,000 MILES

Just wondering if you might be able to help me out. Was wondering why the heater in my 2000 Jimmy only blows cold air. What could be the cause. Also I was wondering if I can get your opinion on what you think about a 2004 Chrysler Intrepid ES. Are they good reliable cars when it comes to repairs or are they lemons. Or average as most cars with common problems. Thanks

Friday, January 25th, 2008 AT 8:32 AM

1 Reply

MERLIN2021

MECHANIC
17,250 POSTS

Try warming the Vehicle, then carefully feel the heater hoses, are they both hot? If one is cooler than the other, You need to flush the core, or do a replacement job on the heater core. Also if the system has a heat control valve on the heater hose, make sure it is working! Also check the thermostat, and the temperature blend door, thats under the dash, in the heater plenum. You can flush this yourself, buy the prestone flush kit and install the tee in the heater return line. Disconnect the heater hose at the waterpump, clamp the hose in back of the tee you installed and back flush till it runs clear.20 mins or so.
I never was a Chysler fan.I hear the 2.7 engine is a dog tho.

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Friday, January 25th, 2008 AT 2:33 PM