Micropack

[GoToGuy]

The small block uses the four in square like a pepperbox derringer.

 

[Scooterwrench]

Hey dummy add the photo.

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Kind'a,sort'a but not quite it. Has the one piece green wire seal in the rear and no key slot in the front. The index keys are on the sides and gives it a sort of mushroom shape when viewed from the front. I'm thinking the TB and IAC is '88

 

[Scooterwrench]

The small block uses the four in square like a pepperbox derringer.

Yeah,that's Weather Pack connector and that will get cut off and replaced with the Metri Pack. Trying to keep it nice,neat and factory appearing. You know,that OCD thing!

 

[Scooterwrench]

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This is the aggravating little f#cker. The bottom pic is the tool I made years ago out of a piece of SS wiper blade stiffener. I have removed hundreds of terminals with that tool with no problem until I got to this one.
I did a little research and found out my TB was made in '87.

 

[L31MaxExpress]

IAC connectors are weird, they come out from the front not the rear. Ran across this trying to repin a LS IAC to run a Dodge style Holley IAC. Ended up swapping the connections at the PCM.

 

[GoToGuy]

This is the IAC , original on 95 K2500, 5.7, that I broke the lock tab. And then got a new shell and repin. It's a wetherpack, seals at the back, two lock tabs on pin. Insert the tool in front to collapse tabs and slide wire out of back of shell.

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[Scooterwrench]

IAC connectors are weird, they come out from the front not the rear. Ran across this trying to repin a LS IAC to run a Dodge style Holley IAC. Ended up swapping the connections at the PCM.

And that's what the FSM says too,out the front.

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For some reason I can't get the tab to release. I've pushed,pulled,twisted even bent the tip of my little tool in hopes it would push the tab up. Don't reckon it matters,can't get the terminals anymore. I'll place the order for the connector in the 150.2 version and carry on. Need the weatherpack male terminals for the TPS and a new connector body for the MAP. EFI Connection will be my hero today.

 

[evilunclegrimace]

This is the IAC , original on 95 K2500, 5.7, that I broke the lock tab. And then got a new shell and repin. It's a wetherpack, seals at the back, two lock tabs on pin. Insert the tool in front to collapse tabs and slide wire out of back of shell.

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This the correct IAC connector that is on ALL '88-'95 5.0,5.7 and 4.3 TBI equipped engines in GMT400 trucks.

 

[L31MaxExpress]

This the correct IAC connector that is on ALL '88-'95 TBI equipped engines in GMT400 trucks.

Not correct, the 454 TBIs use a different connector. IAC on those looks like the one in a LT1 or Vortec.

 

[evilunclegrimace]

Not correct, the 454 TBIs use a different connector. IAC on those looks like the one in a LT1 or Vortec.

Learned something new today, I have never owned a 7.4 and only worked on a few 30 odd years ago.