Question about 1998 GMC Jimmy

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Need to replace heater core in my 98' GMC Jimmy

It is too expensive to get this done in the shop due to the intensive labor...they said it is listed as a 8-9 hour job ...is this true? And exactly how difficult is it too remove the entire dashboard?

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  • toboyekest Feb 14, 2009

    I have the same problem with my 1998 Jimmy. The anti-freeze is leaking into the vehicle. Can a radiator stop leak help? Or do I need to have it replaced? It there somewhere I can get a manual online, for free, on a step-by-step on how to take the dash off? Any suggestions other than replacing the heater core?

  • unlucky98 Mar 30, 2009

    I had mine replaced about 2 1/2 yrs ago by the dealership. It lasted one winter. At some point in time it seems that someone bypassed it so they wouldn't have to fix a new issue. Idk when it was bypassed or why, but could this be why my check engine light won't go off? Since they replaced the heater core the interior has never been right again. My ashtray hangs and I always hear interior parts rubbing and popping while driving.

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Pretty difficult. With a manual and good weekend you can do this job yourself. I recommend having it done somewhere. Although expensive, its well worth it to have it done. 8-9 hours is about right. You need to remove things like the steering column and entire dash board, heater box and A/C components going into the box. Save yourself the hassle and bite the bullet on this one. You'll be glad you did. Thanks for using Fix Ya!

Sincerely,

JC

Posted on Jan 03, 2009

  • jimmy97 Jan 14, 2011

    not an east job i did mine there were about 100 screws and bolts to remove and 4 or five wire bundles that are almost impossible to reach u need need to also lower the steering colum which requires removing some really big bolts DEX COOL IS GREAT COOLANT BUT U HAVE TO FLUSH AND FILL EVERY YEAR!!!

  • I FORGOT Sep 01, 2011

    THE GASKET ON THE HEATER CORE ARMS WERE OUT , IT ONLY LAST ABOUT 2 YEARS CAN I PUT A COPPER ONE IN WITH SOLID ARMS.

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