98 S10 heater core - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


GMC/Chevrolet Truck/SUV When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-28-2014, 09:51 AM   #1
Retired Administrator

True Car Nut
Thread Starter
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default 98 S10 heater core

Son called from College 800 miles away- S10 is steaming up the windshield, appears to be coolant. Likely culprit- heater core.

Did some research, replacing heater core is a major job. Not all that tough except locating about six hidden screws. Job is super time consuming, and lots of things can go wrong if someone doing the job is sloppy and/ or inexperienced. Called the local Chevy dealer- $1400 for the replacement.

Looking for any suggestions on best way to approach it. I am assuming it is in fact the heater core and not a clogged heater core- I flushed the heater core four years ago when I replaced the LIM gasket, water pump, and radiator. I am speculating after replacing all of that and new DEX, the core should not be clogged.
GunsOfNavarone is offline   Reply With Quote
Old 10-28-2014, 10:12 AM   #2
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,648
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Install a bypass kit. ie, remove the heater core hoses from the fire wall and install a piece of pipe to reroute the coolant. Tell him to dress warm.

Yes, I've heard the S10, Blazers heater core is a PITA to get out. 6-8 hours of labor to pull the whole dash out.
Mike is offline   Reply With Quote
The Following User Says Thank You to Mike For This Useful Post:
GunsOfNavarone (10-28-2014)
Old 10-28-2014, 10:41 AM   #3
Retired Administrator

True Car Nut
Thread Starter
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

I am thinking about driving out to my Son, leaving him my truck, and taking his truck back to PA and do the work myself. If I get his truck to PA, I will likely do a tune up, replace the ball joints, idler arm, and a few other things. Issue comes as at 800+ miles each way, that is 3200+ miles..........
GunsOfNavarone is offline   Reply With Quote
Old 10-28-2014, 12:56 PM   #4
Senior Member
Posts like a Turbo
 
Join Date: Oct 2011
Location: SC
Posts: 247
Thanked 50 Times in 43 Posts
garagerog is a jewel in the roughgaragerog is a jewel in the roughgaragerog is a jewel in the rough
Default

Quote:
Originally Posted by GunsOfNavarone View Post
I am thinking about driving out to my Son, leaving him my truck, and taking his truck back to PA and do the work myself. If I get his truck to PA, I will likely do a tune up, replace the ball joints, idler arm, and a few other things. Issue comes as at 800+ miles each way, that is 3200+ miles..........
Might only be 1600 miles driving for you if your son plans on coming home from college for Thanksgiving vacation. That would give you a few weeks to make needed repairs and he would be doing half the driving after the completed swap. Like Mike says bypassing the heater core is a temporary fix that he could do, but if he goes to school where it gets cold he'll miss the defroster more than the heater.

2004 Bonne SLE
1971 Chevelle SS
garagerog is offline   Reply With Quote
The Following User Says Thank You to garagerog For This Useful Post:
GunsOfNavarone (10-28-2014)
Old 10-28-2014, 03:15 PM   #5
Retired Administrator

True Car Nut
Thread Starter
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

Looks like the plan is to drive out to him on Monday and leave him my truck, and drive his S10 to PA. Work on his S10 and do the following:
* replace heater core
* replace passenger mirror
* upgrade fuel injectors to spider configuration (already have upgrade kit)
* replace front rotors and pads (already have rotors and pads)
* replace idler arm (already have part)
* replace door hinges
* replace lower and upper ball joints- they were good two years ago but truck is at 165k miles- might as well do it while everything else is being done.3
* replace plugs, wires, and distro cap
* flush trans axle
* inspect vacuum hoses
* possibly replace tires (hope not- S10 is a ZR2 and tire is somewhat pricey)
* replace rear end oil

My Son can then pick the truck up at Christmas- I don't have the time to get it all done before Thanksgiving. The other option is for me to fly to Phoenix and pick up the Bonneville, drive it to Illinois and leave it with my Son, and then bring the S10 to PA. The plus with this is the Bonneville is FWD and easier to drive in the winter than the RWD F-350.
GunsOfNavarone is offline   Reply With Quote
Old 10-28-2014, 04:42 PM   #6
Senior Member
Posts like a Turbo
 
Join Date: Oct 2011
Location: SC
Posts: 247
Thanked 50 Times in 43 Posts
garagerog is a jewel in the roughgaragerog is a jewel in the roughgaragerog is a jewel in the rough
Default

Sounds like a plan, you might even get some help out of your son during his Christmas break if you run short on time with that extensive "to do" list!

2004 Bonne SLE
1971 Chevelle SS
garagerog is offline   Reply With Quote
Old 10-28-2014, 05:58 PM   #7
Senior Member

Posts like a Camaro
 
Join Date: Aug 2013
Location: Northern California
Posts: 1,014
Thanked 164 Times in 130 Posts
75 racer is a splendid one to behold75 racer is a splendid one to behold75 racer is a splendid one to behold75 racer is a splendid one to behold75 racer is a splendid one to behold75 racer is a splendid one to behold75 racer is a splendid one to behold
Default

Yes the S10 heater core is a PITA! You do need to remove the entire dash assy. The book calls for you to evacuate the AC, take out the inner fender and remove the outer AC assembly from the fire wall because there is one bolt under it that holds the inner heater box to the fire wall, I cheat. I remove the dash take all the bolts loose from the heater box except for the hidden one, I take my pencil torch and heat up the plastic and flex the heater box away from the firewall enough to sneak the heater core out.
75 racer is offline   Reply With Quote
The Following User Says Thank You to 75 racer For This Useful Post:
GunsOfNavarone (10-28-2014)
Old 10-28-2014, 09:43 PM   #8
Senior Member
Posts like a Camaro
 
rjblazer's Avatar
 
Join Date: Jan 2010
Location: Elmira, New York
Posts: 853
Thanked 31 Times in 29 Posts
rjblazer has a spectacular aura aboutrjblazer has a spectacular aura about
Default

I did a lot of heater core on the blazers and s10 when I worked at the chevy dealer. I never evacuate the a/c. you can get to the so called hidden bolt. it a pain but manageable. once the inner fender is out.
rjblazer is offline   Reply With Quote
The Following User Says Thank You to rjblazer For This Useful Post:
GunsOfNavarone (10-29-2014)
Old 10-29-2014, 08:14 AM   #9
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

if you dont clean the inside window they fog up like that, i would have him do it and make sure it comes back before you get too far
jwfirebird is offline   Reply With Quote
The Following User Says Thank You to jwfirebird For This Useful Post:
GunsOfNavarone (10-29-2014)
Old 11-04-2014, 06:15 PM   #10
Retired Administrator

True Car Nut
Thread Starter
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

Picked up the S10. 1500 miles round trip in under 26 hours. Drove myself, 3 hours sleep after I picked up the S10 in the Indiana Toll Road service plaza. Sleeping io a 98 S10 standard cab with a floor console is tough; can't lay across the seats at all, and no recline of seat in a S10 standard cab....

Arrived at my Son'* college at 10pm, and he gave me a squeegee to clean the inside of the windshield while driving. For three hours I drove through construction and Chicago traffic, could not see much, but it was late so traffic was not so busy.

After awaking from a 3 hour nap service plaza; it was raining. I had no choice but to turn on the front window defroster. Low and behold- it actually cleared the inside of the windshield after a few moments. No idea why the inside windshield fogs up when the defroster was off, but when it was things worked ok except a bad smell of coolant vapor in the cabin.

Ordered the OEM heater core. Amazon was $10 less than RockAuto, and also had free two day shipping. RockAuto wanted $7 for shipping and it was take 4 days for arrival. Amazon often beats RockAuto on cost and delivery of auto parts.
GunsOfNavarone is offline   Reply With Quote
The Following User Says Thank You to GunsOfNavarone For This Useful Post:
garagerog (11-04-2014)
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
How to replace heater core in a 1998 S10 ZR2 GunsOfNavarone GMC/Chevrolet Truck/SUV 2 11-13-2014 10:40 PM
Heater hose routing for 94 2.2L S10/Sonoma S10guy GMC/Chevrolet Truck/SUV 2 10-23-2013 10:35 PM
Heater core replacement 2x4 1987-1991 7 09-27-2003 06:50 PM
94 SSEi Heater Core Replacement James 1992-1999 4 09-01-2003 01:03 PM
Heater core ( maybe ) turtle_sse 1992-1999 6 02-28-2003 04:05 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:15 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.