Wrong Wiring Diagram for my chevy 6.2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mr. Winchester · 06-11-2008, 04:14 PM

I bought the 1985 shop manual for my Chevy blazer. When the rewiring started I noticed someting was wrong. My blazer is sold as a 1985, but the VIN says it's a 1984. Sad but true! Now I own a shop manual for a 1985, and that goes a long way, but not for the diesel engine wiring.
Therefore I'm wondering if someone has the 1984 version of the engine wiring diagram?

rcbildr · 06-11-2008, 05:26 PM

What part of the wiring are you working on? There is a good diesel website I know of and I will post the link when I get home.

Mr. Winchester · 06-11-2008, 05:34 PM

Quote:

Originally Posted by rcbildr

What part of the wiring are you working on? There is a good diesel website I know of and I will post the link when I get home.

I'm working on the complete engine wiring, with sensors, solenoids, fuelfilter, glowsystem, ac, etc etc. And I'm also working on the under dash harness. The dash wiring diagrams looks ok, but there are some minor differences.

Looking forward to the link

rcbildr · 06-11-2008, 08:07 PM

Is the wiring all cut up? I don't remember there being many differences (if any) between 84 and 85. The only things I can think of that might be different is the fuel filter on the firewall and the glowplug controller system. The only other catch would be depending on the transmission. If it has a 700R4 there is a throttle position switch and if it has a TH-400 there is a vacuum switch type thingy (not sure what its called) instead.

The Site I went to when I was working on my diesel projects...my 85 Suburban and a friends 83 shortbed truck...was www.dieselplace.com. Pretty soon I will be taking on another Suburban project, I will be acquiring an 86 diesel suburban for my girlfriend to drive... I converted my 85 to a manual transmission and she doesn't like driving it because the clutch hurts her ankle. The 86 is a 3/4ton 4x4 that needs an engine swap. Right now I'm saving the $$$ to buy it and the spare engine from my friend.

Mr. Winchester · 06-11-2008, 08:32 PM

Yes the wiring is all cut up, disconnected, missing and looks more or less like spagetti

And yes, the fuelfilter connections and glow wiring is different on an 84 and an 85. F.ex. on an 85 you got the glow controller and relay in one piece, but on an 84 you got separate controller and relay.

My transmission is a TH400, should be a TH700, but it has been swapped some time before i bought it.
The swap is badly done and I got a lot of wiring and vacuum to figure out.

06-11-2008, 04:14 PM	#1
Mr. Winchester Registered User Join Date: Jun 2008 Location: Hamar, Norway Posts: 11	Wrong Wiring Diagram for my chevy 6.2 I bought the 1985 shop manual for my Chevy blazer. When the rewiring started I noticed someting was wrong. My blazer is sold as a 1985, but the VIN says it's a 1984. Sad but true! Now I own a shop manual for a 1985, and that goes a long way, but not for the diesel engine wiring. Therefore I'm wondering if someone has the 1984 version of the engine wiring diagram?

06-11-2008, 05:26 PM	#2
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Wrong Wiring Diagram for my chevy 6.2 What part of the wiring are you working on? There is a good diesel website I know of and I will post the link when I get home. __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28

06-11-2008, 08:07 PM	#4
rcbildr Registered User Join Date: Sep 2000 Location: Gold Bar, WA Posts: 1,216	Re: Wrong Wiring Diagram for my chevy 6.2 Is the wiring all cut up? I don't remember there being many differences (if any) between 84 and 85. The only things I can think of that might be different is the fuel filter on the firewall and the glowplug controller system. The only other catch would be depending on the transmission. If it has a 700R4 there is a throttle position switch and if it has a TH-400 there is a vacuum switch type thingy (not sure what its called) instead. The Site I went to when I was working on my diesel projects...my 85 Suburban and a friends 83 shortbed truck...was www.dieselplace.com. Pretty soon I will be taking on another Suburban project, I will be acquiring an 86 diesel suburban for my girlfriend to drive... I converted my 85 to a manual transmission and she doesn't like driving it because the clutch hurts her ankle. The 86 is a 3/4ton 4x4 that needs an engine swap. Right now I'm saving the $$$ to buy it and the spare engine from my friend. __________________ My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28

06-11-2008, 08:32 PM	#5
Mr. Winchester Registered User Join Date: Jun 2008 Location: Hamar, Norway Posts: 11	Re: Wrong Wiring Diagram for my chevy 6.2 Yes the wiring is all cut up, disconnected, missing and looks more or less like spagetti And yes, the fuelfilter connections and glow wiring is different on an 84 and an 85. F.ex. on an 85 you got the glow controller and relay in one piece, but on an 84 you got separate controller and relay. My transmission is a TH400, should be a TH700, but it has been swapped some time before i bought it. The swap is badly done and I got a lot of wiring and vacuum to figure out. Last edited by Mr. Winchester; 06-27-2008 at 04:43 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.