Non starting 1999 tahoe 2 door 4wd
- Thread starter Terry Deason
- Start date
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Terry Deason
TYF Newbie
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- Apr 18, 2021
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What? That light is not on! I know you are trying to help but it is not anti-theft.
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Last edited:
east302
Full Access Member
Security light should come on and then go off after five seconds or so.
If it does that, best guess would be to see if you have power to each injector at the injector harness on the intake (ignition on, each of the pink wires)
…and then a noid light to see if the VCM is grounding each injector when cranking.
If you have a scanner, see what the engine rpm is while cranking (from the CKP sensor). You’ll need a couple hundred or the VCM will not activate the injectors.
If it does that, best guess would be to see if you have power to each injector at the injector harness on the intake (ignition on, each of the pink wires)
…and then a noid light to see if the VCM is grounding each injector when cranking.
If you have a scanner, see what the engine rpm is while cranking (from the CKP sensor). You’ll need a couple hundred or the VCM will not activate the injectors.
Last edited:
Terry Deason
TYF Newbie
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- Apr 18, 2021
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Found problem. Went to check the voltage at the plug at injectors and that plug had double gaskets on it. That caused it not to be plugged in all the way. Now for the a/c.
