Cooling fans troubleshooting help, please! - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

acutron42 · 01-02-2026, 11:49 AM

Here is the K20 X2.

kpeters59 · 01-02-2026, 02:48 PM

Well, dang...

My docs say that X1 Pin 7 is Low Speed fand and 58 is High Speed, so that's another discrepancy.

I've got AllData info coming soon, so maybe another?

How do I take the Fuse Box apart? I'd like to do a visual inspection of the underside wiring.

The 2 plugs next to the fuse box on the passenger fender side, what are those plugs called?

Thanks!

-KP

kpeters59 · 01-02-2026, 03:20 PM

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kpeters59 · 01-02-2026, 03:30 PM

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acutron42 · 01-02-2026, 04:47 PM

If I am not mistaken, all 5th gen V8's have the E38 ecm with X1 & X2 plugs. The V6 cars have the E69 unit with the blue plug. I could be wrong though. I will dig through Alldata some more.

kpeters59 · 01-02-2026, 07:27 PM

Thanks!

I did acquire the SERVICE WORKSHOP MANUAL and I still have access to AllData coming up.

-KP

kpeters59 · 01-02-2026, 07:32 PM

I guess the X1 on the E38 goes to the X1 on the underside of the Fuse Box and likewise for the X2 connector?

I'd still like to know how to split the fuse box open so I can see inside. Maybe it's in the Manual somewhere but it's 11000 pages.

-KP

acutron42 · 01-02-2026, 08:18 PM

Your X1 & X2 are the plugs in your post#5

kpeters59 · 01-03-2026, 01:01 AM

Quote:

Originally Posted by kpeters59

Thanks for replying!

I seem to have wiring diagrams, but it's unclear which plug on the PCM and Fuse Block is which.

Attachment 1171067

Attachment 1171068

Attachment 1171069

Attachment 1171070

I was having trouble getting photos inserted.

So which harness at the PCM would have the fan wires?

And which one at the fuse block?

Thanks!

-KP

I would still like to know what the plugs next to the passenger side of the fuse box are?

-KP

kpeters59 · 01-03-2026, 01:17 AM

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TL;DR

Open the lid, remove the 3 screws, take it apart.
-KP

01-02-2026, 11:49 AM	#15
acutron42 Drives: 2013 Camaro 2SS AGM Join Date: Apr 2020 Location: WNY Posts: 957	Here is the K20 X2. Attached Images __________________ 2013 2SS GPI built & tuned 415, spec'd by Andrew Cammer. GPI ported intake/tb/heads, Tooley springs, CHE trunnions, Callies rotating assembly, Diamond pistons, GPI SS3 VVT, ATI 10% ud damper, Circle D 3800, Kooks ceramic coated lt's with green cats, Mishimoto rad & oil cooler, Derale trans cooler, Holley efi rails. DSS driveshaft, trutrac with 3.91's, G-Force renegades, Hendrix solid cradle bushings Bmr: poly diff bushings, Strange adjustable coilovers, sub frame connectors, ZL1 npps, controlled with a vac pump & mac boost control solenoid.

01-02-2026, 03:20 PM	#17
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56	Fig. 3: X50A Fuse Block - Underhood Bottom View

01-02-2026, 04:47 PM	#19
acutron42 Drives: 2013 Camaro 2SS AGM Join Date: Apr 2020 Location: WNY Posts: 957	If I am not mistaken, all 5th gen V8's have the E38 ecm with X1 & X2 plugs. The V6 cars have the E69 unit with the blue plug. I could be wrong though. I will dig through Alldata some more. __________________ 2013 2SS GPI built & tuned 415, spec'd by Andrew Cammer. GPI ported intake/tb/heads, Tooley springs, CHE trunnions, Callies rotating assembly, Diamond pistons, GPI SS3 VVT, ATI 10% ud damper, Circle D 3800, Kooks ceramic coated lt's with green cats, Mishimoto rad & oil cooler, Derale trans cooler, Holley efi rails. DSS driveshaft, trutrac with 3.91's, G-Force renegades, Hendrix solid cradle bushings Bmr: poly diff bushings, Strange adjustable coilovers, sub frame connectors, ZL1 npps, controlled with a vac pump & mac boost control solenoid.

01-02-2026, 07:32 PM	#21
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56	I guess the X1 on the E38 goes to the X1 on the underside of the Fuse Box and likewise for the X2 connector? I'd still like to know how to split the fuse box open so I can see inside. Maybe it's in the Manual somewhere but it's 11000 pages. -KP Last edited by kpeters59; 01-03-2026 at 01:23 AM.

01-02-2026, 08:18 PM	#22
acutron42 Drives: 2013 Camaro 2SS AGM Join Date: Apr 2020 Location: WNY Posts: 957	Your X1 & X2 are the plugs in your post#5 __________________ 2013 2SS GPI built & tuned 415, spec'd by Andrew Cammer. GPI ported intake/tb/heads, Tooley springs, CHE trunnions, Callies rotating assembly, Diamond pistons, GPI SS3 VVT, ATI 10% ud damper, Circle D 3800, Kooks ceramic coated lt's with green cats, Mishimoto rad & oil cooler, Derale trans cooler, Holley efi rails. DSS driveshaft, trutrac with 3.91's, G-Force renegades, Hendrix solid cradle bushings Bmr: poly diff bushings, Strange adjustable coilovers, sub frame connectors, ZL1 npps, controlled with a vac pump & mac boost control solenoid.

01-02-2026, 02:48 PM	#16
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56	Well, dang... My docs say that X1 Pin 7 is Low Speed fand and 58 is High Speed, so that's another discrepancy. I've got AllData info coming soon, so maybe another? How do I take the Fuse Box apart? I'd like to do a visual inspection of the underside wiring. The 2 plugs next to the fuse box on the passenger fender side, what are those plugs called? Thanks! -KP

01-02-2026, 03:30 PM	#18
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56

01-02-2026, 07:27 PM	#20
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56	Thanks! I did acquire the SERVICE WORKSHOP MANUAL and I still have access to AllData coming up. -KP

01-03-2026, 01:17 AM	#24
kpeters59 Drives: Black 2012 SS Convertible Join Date: Jul 2018 Location: Houston Posts: 56	TL;DR Open the lid, remove the 3 screws, take it apart. -KP Last edited by kpeters59; 01-03-2026 at 02:34 PM.