Dash removal and replacement

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HotWheelsBurban

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I’ve been messing with this plug for weeks because my 98 Chevy starts for a few seconds then shuts off an now I know it goes to nothing
Sounds like the Passlock system on your truck is activated. If it cranks, fires and then shuts off after 2-3 seconds, that's exactly what is happening.
Did you swap dashes and not transfer the Passlock box from the old dashboard?
 

62barsoom

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Continued...

My old dash pretty much fell apart when I pulled it from the truck. What were once small cracks quickly expanded. It's trashed...

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The remaining alldata instructions are for pulling the radio, HVAC, switches, etc. from the dash. You can pretty much wing it from here...

32. Remove the accessory switch(es) as necessary.
33. Remove the instrument cluster bezel. See: Service and Repair
34. Remove the headlamp switch.
35. Remove the HVAC control assembly.
35.1. Disconnect the electrical connectors.

35.2. Disconnect the cables (if equipped).
36. Remove the instrument cluster screws and the cluster.
37. Remove the IP auxiliary storage compartment (if equipped).
38. Remove the IP cupholder.
39. Remove the ashtray assembly.
40. Remove the radio from the carrier.
41. Remove the two air distribution duct screws.

The air duct needs to come out so that you can remove the wiring harness beneath. It's held in place with two screws on the ends and a clip in the radio/hvac cavity. I didn’t get a picture of the clip, but take out the radio and a/c control panel and it’s in there.

One screw is on the passenger side



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and one on the driver side behind the wiring


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42. Remove the air distributor duct from the IP. Squeeze the clips from the front of the IP in order to release the duct.
43. Disconnect the antenna lead-in.


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44. Remove the retaining clips from the inflatable restraint IP module or the IP compartment assembly.
45. Remove the inflatable restraint IP module.
46. Remove the four nuts that retain the IP compartment assembly to the carrier (vehicles over 8,600 GVWR).

Remove passenger airbag. It has four screws, two are captive. I didn't get a picture of the other two, but they go up toward the top of the dash.

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47. Remove the rosebud retainers on the right side of the IP forward harness.

There are several metal clips and plastic christmas tree clips that hold the harness to the dash. Just disconnect all wiring harnesses to the cigarette lighter, 4x4 buttons, airbag switch, cargo light, etc. and remove from dash. I started with the passenger side.

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Be careful with the connector to the instrument cluster. Squeeze the side clips and push the connector forward (toward the steering wheel), turn it and then pull it back through the opening.

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And that's about it. Transfer the wiring harness to the new dash and install the HVAC ductwork onto the new dash. Reinstall the radio, passenger airbag, etc. and go from there. Installation in the truck is the reverse.
Thanks for taking the time to write this up. Very well done, and the support pictures are a great addition. The last dash I did was pre internet and there was a screw on each side only accessible with the windshield out. Glad I started with the bad one.
 

CarbonTL

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Anyone else fighting the alignment of the dash, defrost ducts and the 3-captive nuts on the cab flange where the upper screws go into? It's like hitting a moving target!
 

someotherguy

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The last dash I did was pre internet and there was a screw on each side only accessible with the windshield out. Glad I started with the bad one.
Wait, what? In a GMT400? I've had multiple dashes out of both interior styles and never removed the windshield to do it. Maybe I'm misunderstanding what you're saying. Different vehicle maybe?

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Richard
 

AK49BWL

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Gotta be a different vehicle lol, I swapped a 94 dash into my 97 and even with the steering column support bracket change-out, I still never had to touch the windshield.
 

62barsoom

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Wait, what? In a GMT400? I've had multiple dashes out of both interior styles and never removed the windshield to do it. Maybe I'm misunderstanding what you're saying. Different vehicle maybe?

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Richard
You're right. The dash was in a 1972 BMW 2002.
 

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