Question about 2000 GMC Sierra

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Put a transmission in a 2000 sierra and it want go in any gear

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What does "it want go" mean? It will not shift into gear, or once in gear it "want" pull? If the latter, do you fill the trans with fluid, let it pump around by shifting through all the gears and then check the fluid level again?

Posted on May 24, 2015


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Posted on Jan 02, 2017

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SOURCE: i put in a used transmission into my 2000 gmc

Hi there,

I would firstly suspect a problem with the Park/Neutral Position Switch, as this switch is connected directly to your dash gear indicator.


1st test: attempt to START the engine in each of the following gears: P, R, N, D, 3, 2, 1 (or L, C etc).

1) Engine should start in P & N ONLY
2) Engine should NOT start in other gears

- If engine does not start in any gear, then ensure switch is connected properly.
- If engine starts in both P & N ONLY, then switch is working OK.
- If engine starts in P, but not in N....then switch requires correct alignment on the transmission.

Should this still not resolve the problem, then you will need to have your local dealership access your vehicle's on-board diagnostics/trouble codes - this will immediately identify where the the fault lies (as all transmission electronics are monitored by the OBDII system).


"If this information has helped you in any way, please rate this solution"

Posted on Jan 27, 2010

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Sounds like your torque converter is going out. If it is that when you go to shift the transmission is not getting enough fluid to keep the parts moving in the transmission. The clunks it the gears freeing up and smashing into the right position. I had a similiar thing happen to me with my old truck. That sounds like the problem you are having, but I could be wrong. I sure way to tell is to check you transmission fluid and see if brown or black. If its one of those the colors the transmission fluid is burnt up. Usually the trans fluid is red. Hope that helps.

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Check the linkage first. I have had the linkage come loose before. If it isn't the linkage you need a good transmisson man.

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