Sm465 Squeek

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Jarrett Melvin

Full Access Member
Joined
Oct 17, 2020
Posts
78
Reaction score
29
Location
Newfoundland
First Name
Jarrett
Truck Year
1983
Truck Model
C20
Engine Size
350
This week I undertook the task of changing headers on my 1 ton and installing new rad.

In the process of installing the headers, I discovered they interfered with my PTO on my gearbox.

So naturally I had to drain the gearbox, remove, cover, refill.

Ever since, there seems to be a squeeking in the gear box whenever moving forward.

I bought a five gallon pale of 80w-90 for it and didnt realize u til I got home it was GL5 and I've read that you should only use GL4. But I used it anyway.

When idling the truck sounds fine. Reverse fine. In forward gear and as speed increases, the squeeking increases.

Any input greatly appreciated guys.
 

PrairieDrifter

Full Access Member
Joined
Dec 28, 2014
Posts
3,422
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Location
North Dakota
First Name
Mason
Truck Year
84,79,77,70,48
Truck Model
Suburban k10, bonanza k10, c30 C&C, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350
Check U-joints first.
 

Jarrett Melvin

Full Access Member
Joined
Oct 17, 2020
Posts
78
Reaction score
29
Location
Newfoundland
First Name
Jarrett
Truck Year
1983
Truck Model
C20
Engine Size
350
This Squeek wasn't in the truck yesterday when I pulled her in the garage, all unchanged was headers, gear oil, and rad. And the squeek is right under the hump
 

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