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I have a 1996 S-10 Chevy blazer that needs the heater Core ...


Sent to Car Experts January 11, 2006 7:46 p.m.
I have a 1996 S-10 Chevy blazer that needs the heater Core Replaced. What is the easiest way to remove? Do i have to pull out the whole dash assembly? Plus Do i have to be concerned about an airbag? Please give me detailed instructions.
Thank You

Optional Information:
1996 Chevrolet s-10 Blazer 4.3

Already Tried:
Removed some of the under dash
Customer (name blocked for privacy)
Status: Closed   Value: $5   
Answer
January 11, 2006 8:02 p.m. (16 minutes and 6 seconds later) 		REPLIED Check Mark

Images available only to Customers.


  1. Disconnect the negative battery cable and properly drain the engine cooling system to a level below the heater core.

  2. Disconnect the heater hoses from the core tubes near the cowl.

The instrument panel carrier is designed not only to provide access to parts through removal of the carrier components, but the carrier will also tilt downward as a complete assembly to allow access from the top. If this is desired, remove the retainer screws along the top and bottom of the carrier assembly (refer to the figure). The instrument panel will then tilt as an assembly into the cab. It is necessary to unbolt and lower the steering column from the carrier to allow for maximum movement of the instrument panel.

  1. The instrument panel must be removed or repositioned for access to the heater core case. Unbolt and either tilt the instrument panel forward or disengage the instrument panel components and remove the panel from the vehicle. In most cases, tilting the panel forward should be sufficient for the necessary access . Unfasten the heater core rear case retaining screws, then remove the rear case for access to the heater core.

  2. Loosen the retainers and remove the heater core retaining straps.

  3. Remove the heater core and seals.

To install:

  1. Install the heater core and seals, taking care not to damage the core tubes when inserting them through the cowl.

  2. Install and secure the core retaining straps.

  3. Install the rear case and secure using the screws.

  4. Reposition and secure the instrument panel and components. Tighten the cowl screws to 17 inch lbs. and the lower instrument panel screws to 66 inch lbs.

  5. Connect the heater hoses to the core tubes.

  6. Connect the negative battery cable, then properly refill the engine cooling system.

  7. Run the engine at normal operating temperature, then check for leaks.

If you need to remove the dash follow these instructions:

Images available only to Customers.

Images available only to Customers.

Images available only to Customers.

Images available only to Customers.

Images available only to Customers.

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Images available only to Customers.


< cellSpacing=0 cellPadding=0 wid=310> <> < vAlign=top wid=10 colSpan=2 height=10>
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< vAlign=top wid="100%" height=1>
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< vAlign=top wid=10 colSpan=2 height=10>
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<> < vAlign=top wid=1 bgColor=#8c8c8c height="100%">
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< vAlign=top wid=9>
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< vAlign=top align=middle wid=290> < cellSpacing=0 cellPadding=0 wid=290> <> < align=middle bgColor=#ffcc00 height=15>CAUTION <> < align=middle>
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<> <>When performing service around the air bag system components or wiring, the air bag system MUST be disabled. Failure to do so could result in possible air bag deployment, personal injury or unneeded air bag system repairs. < wid=9 height="100%">
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< wid=1 bgColor=#8c8c8c height="100%">
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<> < vAlign=bottom align=left wid=10 colSpan=2 height=10>
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< vAlign=bottom height=1>
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< vAlign=bottom wid=10 colSpan=2 height=10>
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  1. Disconnect the negative battery cable.

  2. Disable the air bag system. Please refer to Supplemental Inflatable Restraint (SIR) System in Chassis Electrical .

  3. Remove the two screws from the instrument cluster trim plate and remove the cluster trim plate from the instrument panel.

  4. Unplug all electrical connectors, as necessary.

  5. If equipped with a tilt steering column, move it to the down position.

  6. Set the parking brake, block the wheels and place the automatic transmission in low, if equipped.

  7. Remove the left instrument panel sound insulator.

  8. Unplug the DLC connector.

  9. Disengage the RKE/delay module.

  10. Remove the center instrument panel sound insulator.

  11. Disconnect the parking brake release cable by squeezing the retainers.

  12. Disconnect the cable slug from the parking brake mechanism and remove the knee bolster.

  13. Remove the right instrument panel sound insulator.

  14. Remove the lighter and accessory power outlets, if equipped.

  15. Remove the courtesy lamp.

  16. Remove the knee bolster from the vehicle.

  17. Remove the HVAC control assembly and set aside.

  18. Remove the four radio screws, and through the storage compartment, reach behind the radio and unplug the antenna and three electrical connectors.

  19. Using a 15 mm wrench, remove the four steering column screws.

  20. Remove the following four lower instrument panel support bolts screws across the bottom of the instrument panel.

    1. Remove the left and right instrument panel pivot bolts.

    2. Remove the instrument panel lower support to brake pedal bracket.

    3. Remove the instrument panel lower support bolt.

  21. Remove the instrument panel upper support bolts.

  22. Remove both speaker grilles.

  23. Using a flat bladed tool, remove windshield defrost grilles.

  24. Unplug all electrical connectors, as necessary.

  25. Remove the instrument panel from the vehicle.

To install:

  1. Position the instrument panel to the vehicle and rest onto the lower pivot studs.

  2. Engage all electrical connectors, as necessary.

  3. Install the upper instrument panel support screws, but do not tighten.

  4. Install the right, center and left lower instrument panel support screws, but do not tighten.

  5. Align the instrument panel for the lower screws.

  6. Tighten the upper and lower support screws to 66 inch lbs. (7.5 Nm).

  7. Install the steering column nuts and tighten to 22 ft. lbs. (30 Nm).

  8. Install both speaker grilles.

  9. Install the radio and plug the antenna and three electrical connectors.

  10. Install the HVAC control assembly and vacuum and electrical connections.

  11. Install the instrument cluster trim plate and align with the knee bolster.

  12. Instal the knee bolster to the vehicle.

  13. Install the courtesy lamp.

  14. Install the lighter and accessory power outlets, if equipped.

  15. Install the parking brake cable.

  16. Install the center instrument panel sound insulator.

  17. Install the left instrument panel sound insulator.

  18. Engage the RKE/delay module.

  19. Plug in the DLC connector.

  20. Install the nut to the accelerator stud and tighten to 35 inch lbs. (4 Nm).

  21. Install the right instrument panel sound insulator.

  22. Enable the air bag system. Please refer to Chassis Electrical .

  23. Connect the negative battery cable.





Edited by railman on January 11 2006 at 8:07pm

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"It is much wiser and cost efficient to ask a question than to stumble blindly through your auto repairs".Please Click Accept if my answer was helpful.
PictureMichael  -- Auto Service Technician -- 99% Positive Feedback on 597 Car Accepts
21yrs.Foreign and domestic driveability diagnosis and repair/ ASE Cert./Fuel Injection Specialist.
Reply
Sent January 11, 2006 8:16 p.m. (13 minutes and 34 seconds later)
ThankYou I appreciate it.
Customer (name blocked for privacy)
Answer
January 11, 2006 8:16 p.m. (51 seconds later)
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PictureMichael  -- Auto Service Technician -- 99% Positive Feedback on 597 Car Accepts
21yrs.Foreign and domestic driveability diagnosis and repair/ ASE Cert./Fuel Injection Specialist.

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