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Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
Satisfied Customers: 12912
Experience:  Have owned a repair shop for 25 yrs.
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how to changethe evaporator core in a 96 silverado

Resolved Question:

how to changethe evaporator core in a 96 silverado
Submitted: 4 years ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 4 years ago.

hi

this may help you

thanks

 

Evaporator/Heater Core Case

 

 

Remove or Disconnect

 

  1. Negative battery cable.
  2. Engine coolant.
  3. Recover refrigerant.
  4. instrument panel.
  5. Electrical connectors, as necessary.
  6. Center floor air distribution duct.
  7. PCM and mounting tray (diesel engines only).
  8. Hinge pillar trim panels.
  9. Blower motor cover.
  10. Blower motor (60).
  11. Steering column.
  12. tilt back instrument panel assembly.
  13. Coolant recovery reservoir.
  14. Heater hoses.
  15. Evaporator tube.
  16. Accumulator.
  17. Screws (52 and 64).
  18. Nut (50).
  19. Screw (56).
  20. Module assembly (57).
    • May be necessary to have an assistant when removing module assembly.
  1. Evaporator case bottom cover plate (63).
    • Remove the seven screws that hold the cover plate to the module assembly.
  1. Heater core and seal from module assembly.
  2. Evaporator case cover (61).
    • Remove the four screws that hold the case cover to the module assembly.
  1. Evaporator core.

Install or Connect

  1. Evaporator core.
  2. Evaporator case cover (61).
    • Install the four screws that hold the case cover to the module assembly.
  1. Heater core and seal into module assembly.
  2. Evaporator case bottom cover plate (63).
    • Install the seven screws that hold the cover plate to the module assembly.
  1. Module assembly (57).
    • May be necessary to have an assistant when installing module assembly.
  1. Screw (56).
  2. Nut (50).
  3. Screws (52 and 64). Tighten
    • Screw (56) to 11 N.m (97 lb in) .
    • Nut (50) to 2.8 N.m (25 lb in) .
    • Screws (52 and 64) to 1.9 N.m (17 lb in) .
  1. Accumulator.
  2. Evaporator tube.
  3. Heater hoses.
  4. Coolant recovery reservoir.
  5. Instrument panel.
  6. Steering column.
  7. Blower motor (60).
  8. Blower motor cover.
  9. Hinge pillar trim panels.
  10. PCM and mounting tray.
  11. Center floor air distribution duct.
  12. Electrical connectors, as necessary.
  13. Engine coolant.
  14. Negative battery cable.
  15. Charge system.
  16. Check system for leaks.
Customer: replied 4 years ago.

guess i should have been clear, this does help but iam trying to get the dash out to get to it, but on the sides of the dash wont move and i took the 13mm bolts thats on each side off the hole dash will move when i shake it but the botton wont, and i cant figure out how to take the dash out and its killing me lol

Expert:  Tim's Auto Repair replied 4 years ago.

ok

lets try this....

 

 

Instrument Panel Assembly Rotating

INSTRUMENT PANEL ASSEMBLY - ROTATING

REMOVAL PROCEDURE


 

  1. Remove the knee bolster.
  2. Remove the knee bolster reinforcement.
  3. Remove the knee deflector bracket.
  4. Remove the tubular tie bar from under the steering column.
  5. Remove the steering column.
  6. Remove the IP storage compartment door.

 


 

  1. Remove the 2 bolts from the PSIR bracket.

 


 

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

 


 

  1. Remove the center support screw.
  2. Pivot the instrument panel.

INSTALLATION PROCEDURE


 

  1. Pivot the instrument panel forward.
.
  1. Install the 3 upper IP to dash screws. Tighten Tighten the screws to 2 N.m (18 lb in) .
  2. Install the left and the right lower instrument panel pivot bolts. Tighten Tighten the bolts to 20 N.m (15 lb ft) .
  3. Install the two PSIR bracket bolts through the IP storage compartment opening. Tighten Tighten the bolts to 20 N.m (15 lb ft) .

 


 

  1. Install the center support screw.
  2. Install the steering column.
  3. Install the tubular tie bar under steering column.
  4. Install the knee deflector bracket. Tighten Tighten the knee deflector bracket bolts to 3 N.m (27 lb in) .
  5. Install the knee bolster reinforcement. Tighten Tighten the bolts to 7 N.m (62 lb in) .
  6. Install the knee bolster.

 


 

  1. Install the IP storage compartment door.
Instrument Panel Carrier Replacement

INSTRUMENT PANEL REPLACEMENT

REMOVAL PROCEDURE

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices .

  1. Disconnect the negative battery cable(s).
  2. Disable the SIR system.
  3. Remove the three relay center bolts from the underside of the wheel opening.
  4. Remove the bulkhead connector.
  5. Remove the following components from the bulkhead connector:
    • The screws from the convenience center to the cowl
    • The cruise control harness (if equipped)
    • The forward lamp harness
    • The SIR system harness
    • The relay center
  1. Remove the coolant reservoir.
  2. Disconnect the antenna lead-in and the grommet.
  3. Remove the knee bolster.
  4. Remove the steering shaft pinch bolt.
  5. Remove the left and the right sill plate front screw.
  6. Remove the left and the right hinge pillar trim panels.
  7. Remove the brake release handle from the cable. The clip releases the handle from the cable.
  8. Remove the reaction plate assembly.
  9. Remove the tie bar.
  10. Remove the knee deflector bracket.
  11. Disconnect the 8-way column connector.
  12. Disconnect the 48-way connector retainer in order to access the two lower column nuts.
  13. Disconnect the shift cable (Automatic transmission).
  14. Remove the steering column from the vehicle.
  15. Remove the shift levers.
    • Remove the transfer case knob by pulling the knob straight up. S4WD models must be in the 4-LO range.
    • Remove the manual transmission shift lever (if equipped).

 


 

  1. Remove the front floor console, if necessary.

 


 

  1. Remove the left and the right lower IP pivot bolts.
  2. Remove the IP storage compartment door.
  3. Remove the IP storage compartment. Squeeze the compartment in order to release the compartment.
  4. Remove the two IP attaching bolts through the storage compartment door.

 


 

  1. Remove the center support screw.
  2. Remove the three IP upper support screws.
  3. Remove the IP from the front of the dash.
  4. Disconnect the park brake lever.
  5. Disconnect the following electrical connectors as necessary:
    • The sensing and diagnostic module (SDM)
    • The Heating, Ventilation and Air Conditioning module (HVACM)
    • The 22-way engine harness
    • The stoplamp switch
    • The vehicle speed sensor (VSS) calibrator module
    • The clutch or brake release switches
    • The electronic accelerator (Diesel)
    • The HVAC control cables (if equipped)
  1. Remove the IP from the vehicle.

To this point, the IP removal is complete. If the IP is being replaced or refinished.


 

  1. Remove the accessory switch(es) as necessary.
  2. Remove the instrument cluster bezel.
  3. Remove the headlamp switch.
  4. Remove the HVAC control assembly.
4.1.Disconnect the electrical connectors.
4.2.Disconnect the cables (if equipped).
  1. Remove the instrument cluster screws and the cluster.

 


 

  1. Remove the IP auxiliary storage compartment (if equipped).
  2. Remove the IP cupholder.
  3. Remove the ashtray assembly.
  4. Remove the radio from the carrier.
  5. Remove the two air distribution duct screws.
  6. Remove the air distributor duct from the IP. Squeeze the clips from the front of the IP in order to release the duct.
  7. Disconnect the antenna lead-in.
  8. Remove the retaining clips from the inflatable restraint IP module or the IP compartment assembly.
  9. Remove the inflatable restraint IP module.

 


 

  1. Remove the four nuts that retain the IP compartment assembly to the carrier (vehicles over 8,600 GVWR).
  2. Remove the rosebud retainers on the right side of the IP forward harness.

 


 

  1. Remove the IP storage compartment. Squeeze the compartment in order to release the compartment.
  2. Remove the IP storage compartment lamp. Slide the compartment in order to release the compartment.
  3. Remove the low coolant module (Diesel only).
  4. Remove the data link connector (DLC).
20.1.Remove the one screw.
20.2.Slide the DLC out.
  1. Remove the harness retainer to accessory switches.
  2. Remove the fuse panel and the courtesy lamp switch.
  3. Remove the ground screw.
  4. Remove the harness from the IP.
  5. Remove the jumper harness to the remote playback device (if equipped).
  6. Remove the courtesy lamp switches.
  7. Remove the side window defogger outlets.
  8. Remove the park brake cable clips.
  9. Remove both of the air outlet deflectors.

 


 

  1. Remove the inflatable restraint IP module mounting bracket.
  2. Remove the IP storage compartment door check strap.
  3. Remove the IP storage compartment door striker.

INSTALLATION PROCEDURE


 

  1. Install the IP storage compartment door striker.
  2. Install the IP storage compartment door check strap to the tubular steel tie bar..
NOTE : Refer to Fastener Notice in Cautions and Notices.
  1. Install the inflatable restraint IP module mounting bracket. Tighten Tighten the bolts to 20 N.m (15 lb ft) .
  2. Install both of the air outlet deflectors.
  3. Connect the parking brake lever.
  4. Install the side window defogger outlets.
  5. Install the courtesy lamp switch. Connect the electrical connector.
  6. Install the jumper harness to the remote playback device (if equipped).
  7. Install the harness to the IP.
  8. Install the ground screw.
  9. Install the fuse panel and the courtesy lamp switch.
  10. Install the harness retainer to accessory switches.
  11. Install the data link connector (DLC).
13.1.Slide the DLC in.
13.2.Install the one screw.
  1. Install the low coolant module (Diesel only).
  2. Install the IP storage compartment lamp.
  3. Install the rosebud retainers for the harness on the right side of the IP.
  4. Install the retaining clips to the inflatable restraint IP module or the IP compartment assembly.

 


 

  1. Install the inflatable restraint IP module (vehicles with 8,600 GVWR).
  2. Connect the antenna lead-in.
  3. Install the air distributor duct to the IP.
  4. Install the two air distributor duct screws.
  5. Install the radio into the carrier.
  6. Install the ashtray assembly.
  7. Install the IP cupholder.

 


 

  1. Install the IP auxiliary storage compartment (it equipped).
  2. Install the instrument cluster with the tour screws.
  3. Install the HVAC control assembly.
  4. Install the headlamp switch.
  5. Install the instrument cluster bezel.

 


 

  1. Install the accessory switch(es) as necessary.
  2. Install the IP to the vehicle. Rest the IP on the lower pivot studs.
  3. Connect the electrical connectors as necessary.
  4. Connect the park brake release cable.
  5. Install the P to the cowl.
  6. Install the three IP upper support screws.

 


 

  1. Install the center support screw.
  2. Install the IP attaching bolts through the storage compartment door.
  3. Install the IP storage compartment.

 


 

  1. Install the left and the right IP pivot bolts.
  2. Install the shift levers (if equipped).
    • Manual transmission
    • Transfer case
  1. Install the steering column to the vehicle.
  2. Connect the shift cable (Automatic transmission). Refer to Shift Cable Replacement in Transmission.
  3. Install the 48-way connector and screw built into the steering column.
  4. Install the 8-way column connector.
  5. Install the tie bar and the four nuts.
  6. Install the knee deflector bracket.
  7. Install the reaction plate assembly.
  8. Connect the brake release handle to the cable.
  9. Install the left and the right hinge pillar trim panels.
  10. Install the left and the right sill plate front screws.
  11. Install the steering shaft and the bolt.
  12. Install the knee bolster.
  13. Install the coolant reservoir tank.
  14. Install the bulkhead connector.
  15. Install the three relay center bolts to the underside of the wheel opening.
  16. Enable the SIR system. Refer to Enabling the SIR System in Restraints.
  17. Connect the negative battery cable.
Customer: replied 4 years ago.
ok thats seems a little to much for me,, do you have to take the dash all the way out to change the evaporator core.
Expert:  Tim's Auto Repair replied 4 years ago.

hi

yes..you will need to do this to remove the hvac unit to get to the evaporator

thanks

Tim's Auto Repair, mechanic
Category: Chevy
Satisfied Customers: 12912
Experience: Have owned a repair shop for 25 yrs.
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