2: Sample Diagram: How to Read and Interpret Wiring Diagrams.


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Its a computer swap! The stock black box PCM that was found in 1996 to 2000 GMT400 trucks has a few shortcomings if you are using your truck in a high perfor.

If you just replaced your distributor and you’re still getting the P1345 code, your distributor positioning is likely off.

The ignition control module (ICM) and ignition coil tests in this article assume that your vehicle is cranking but not starting. . .

Oct 2, 2022 · The most common problem on the 7.

I'm actually in the process of trying to find somewhere that has the rocker arms oil. . Because of the spinning rotor arm inside, the distributor needs to be properly aligned where the rotor points directly at the first cylinder’s respective coil in the timing sequence.

Simply remove the old manifold, drop the new one in. I've read about this and I'm a bit confused.


Mar 1, 2018 · Yeah, no need to spend big bucks on a Vortec replacement distributor.

(70 degrees C. I did find a complete new replacement distributor on evilbay for my 94.

Anyhow no change. Fig.

Reg price was like $72 , On sale for 40% off.
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Jan 31, 2022 · Additionally, a Chevy GMT400 V6 engine tune-up should involve cleaning or replacing the spark plugs, as well as the distributor cap and rotor. . Excessive Oil Consumption.

5. you can NOT run timing advance at the distributor on a computer controlled L31 engine, like you could in older engines. . 4. . 00 $ 145.


the timing advance is completely computer. These GM wiring diagrams provide schematics for vehicle model years 1988 through 1998.


Replacing it solved my two year quest to find an intermittent no start issue with the truck.


The lesser quality Vortec caps are bad about developing internal crossfires that will drive you nuts trying to troubleshoot.

Jul 29, 2019 · The intake manifold gaskets in 1988-1998 GM pickup trucks also often develop external engine oil or coolant leaks.