1995 GMC C1500 engine cuts out then takes a few minutes to start. Pulling my hair out!

[PlayingWithTBI]

make sure to add some dielectric grease to the base.. to insure good heat transfer to the heat sink

It's not dielectric grease, it's thermal paste which you should use. I like this stuff.

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[Teddygraham]

It's not dielectric grease, it's thermal paste which you should use. I like this stuff.

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Should for sure, but I have used dielectric grease for years without issues

 

[PlayingWithTBI]

Should for sure, but I have used dielectric grease for years without issues

Unfortunately dielectric grease is an insulator, thermal paste is a heat conductor. This stuff is used in computers for heat transfer. Dielectric grease is used to prevent electrical conductance to other components, hence the name dielectric.

 

[Dariusz Salomon]

Have you replaced fuel pump pigtail-this things are known to heat and expand losing connection? Also check the relay port for signs of melting and stuff.

 

[1998_K1500_Sub]

Unfortunately dielectric grease is an insulator, thermal paste is a heat conductor. This stuff is used in computers for heat transfer. Dielectric grease is used to prevent electrical conductance to other components, hence the name dielectric.

Reportedly dielectric grease works pretty good as a thermal conductor. A lot of guys use it, probably just because it's handy.

That being said, I would use only heat sink compound unless I was in a bind. A 5oz tube of Wakefield 120 can be found almost anywhere (I think even Amazon) and it should last a quite while in the toolbox... "a little dab will do ya".

Thermal Joint Compound, 120 Series - Wakefield Thermal | DigiKey

Wakefield Thermal's 120 series silicone oil-based thermal joint compound fills the minute air gap between mating surfaces with a grease-like material containing zinc oxide in a silicone oil carrier.

www.digikey.com

 

[Erik the Awful]

Imagine you're trying to epoxy the module in place, but you can't allow any excess to squish out. You'd put a thin layer as evenly as you can across the back. That's how much thermal paste you should use. BTW, don't use epoxy.