Question about 1999 Chevrolet Tahoe
I replaced the engine, it ran fine for a while then threw a bunch of false codes, and will not shift correctly, but the worst of all is that it wont start without me bypassing the relay with a light switch to engage the starter. the tumbler sends voltage, but the relay wont engage. also the neutral safety switch does have continuity when in neutral and park.
Automatic or manual transmission ? tumbler sends voltage ??? What tumbler ? Ignition switch ,when it start position sends B+ voltage to the crank fuse in the insturment panel fuse box ,from there it goes transmission range switch,if in park or neutral it then goes through the relay pin 86 at the relay socket base . With the key in start you should see B+ voltage there . If not ,try moving the gear selector to neutral . if you still don't see B+ voltage , find the trans .range switch an check it.
Posted on Sep 27, 2017
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Posted on Jan 02, 2017
SOURCE: I have a chevy 305
IIf you can unplug the neutral safety switch.Run a jumper wire,from one wire to another in the plug--in,on the wiring harness.Or to the correct wire that feeds the starter solenoid,on the terminal on the solenoid marked s, this engages the solenoid! Make sure that you find the wire that is hot with the key turned as far clockwise as it will go.This would be the starting circuit wire,from the ign switch. The other terminal on the solenoid would be for the ignition on start only,marked i for ignition. If you have Electronic ign. you wont need this hooked up.You will need a test lite or volt meter to find the correct wire with voltage.To power the solenoid.If you can not unplug the wiring you can cut the wires and soldier them together,bypassing the switch.
Posted on Sep 07, 2010
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