Question about 1989 GMC Sierra

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Hello! i have a 1989 GMC sierra 1500 2 wheel drive 350 engine, and i would like to know what size transmission does it take? the one i have in the truck now it will go into reverse but not drive, it leaks no oil or anything do i need another one or what?

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I belive the truck you have comes with a 700r4

Posted on May 13, 2010

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I would try replacing the transmission filter and fluid. There 2 different transmissions that came in the truck, a THM 400 3 speed, 13 bolt fluid pan, and a THM 700-R4 4 speed, 16 bolt fluid pan.

Posted on May 13, 2010

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Firing order diagram and timing degrees 1989 gmc 1500 series 350 engine


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Jan 06, 2016 | GMC Cars & Trucks

1 Answer

I need an Illustrated Parts Break down for a 1989 GMC Sierra 1500. 350 w/ PS/PB loaded. Steering column Removal Repair or Replace


Hi.

Below you get all the parts breakdown for GMC Sierra 1500, including steering column assembly:

1500 SIERRA

Here diagrams for all 1989 GMC trucks.

If you need to take apart the steering column you will also need wiring. below the color codes and wiring tips:

GMC SIERRA 1988-2005 VEHICLE WIRING

Regards.

Ginko

Aug 31, 2011 | GMC C1500 Cars & Trucks

1 Answer

What year/model transmissions will fit a 1989 GMC sierra, 2500, 350 engine, 2-wheel drive? Thanks


A.T., VIN model "C" (4x2), TH400, 6 cyl
A.T., VIN model "C" (4x2), TH400, 8 cyl, 8-305 (5.0L)
}A}}400}466495" type="radio" name="userInterchange" />A.T., VIN model "C" (4x2), TH400, 8 cyl, 8-350 (5.7L)
}A}}400}466496" type="radio" name="userInterchange" />A.T., VIN model "C" (4x2), TH400, 8 cyl, 8-379 (6.2L, diesel)
E>}B}}400}466497" type="radio" name="userInterchange" />A.T., VIN model "C" (4x2), TH700, diesel
A.T., VIN model "K" (4x4), TH400, 6 cyl
B@}}}400}466499" type="radio" name="userInterchange" />A.T., VIN model "K" (4x4), TH400, 8 cyl, diesel
A.T., VIN model "K" (4x4), TH400, 8 cyl, gasoline
A.T., VIN model "K" (4x4), TH700, diesel
FFC}B}}400}466502" type="radio" name="userInterchange" />M.T., 4 spd, 4x2, VIN model "C"
FFC}A}}400}466503" type="radio" name="userInterchange" />M.T., 4 spd, 4x2, VIN model "R"
ECB}B}}400}466504" type="radio" name="userInterchange" />M.T., 4 spd, 4x4, (VIN model "K")
M.T., 5 spd, 4x2
M.T., 5 spd, 4x4
A.T., VIN model "C" (4x2), TH700, gasoline
F=A}B}}400}466508" type="radio" name="userInterchange" />A.T., VIN model "K" (4x4), TH700, gasoline
}B}}400}466509" type="radio" name="userInterchange" />A.T., VIN model "R" (4x2)

Jan 14, 2011 | 1989 GMC Sierra

1 Answer

What size engine goes into a 1991 gmc sierra 2300


2300????? Huh. I though they were 1500, 2500. i could be wrong. ususaly in the 3/4 tonne vehciles, they have a small block V8. I hae seen quite often a 350 cubic inch...but, depending on your transmission and engine braket mounts, not to mention mechanic skills and fabrication abilities, you could put whatever you want in it...As i said, probably a 350 small block is what was in there...probably

May 30, 2010 | 1991 GMC Sierra

2 Answers

01 GMC Sierra - Loud tapping noise upon startup


Sounds to me like your mechanic has it under control

Feb 20, 2010 | 2001 GMC Sierra 1500HD

2 Answers

Where are the fuse boxes located on a 1989 gmc sierra 1500 full size pick up?


there is one under the hood the other is tucked up under the dash or behined a panel on the side of the dash with door open.

Aug 16, 2009 | 1989 GMC Sierra

1 Answer

I want to switch transmissions


If they are both 4L60Es' then yes. I know the 96 1500 does but you didn't state what size the 97 is. And are they both 4X4?

May 03, 2009 | 1997 GMC Sierra

3 Answers

What transmission will fit in an 89 gmc sierra?


if it has a 4.3 liter motor a 86 to a 97 if it has a 350 motor a 81 to a 96 will work hope this helps

Nov 20, 2008 | 1989 GMC Sierra

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