Engine will not start and run?

Tiny
SATURNTECH9
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With the key in the run position is the security light on solid or flashing?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOE1953
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No I did not see any light flashing I will check again.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Please see if it's flashing or on solid that's means the security system is active keeping it from starting
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Also any codes in the computer?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOE1953
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The battry cable been disconnect will it still have any codes in the computer? I will scan for codes.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Sometimes you can read them with a basic code reader when that happens and sometimes you cannot. If there were codes you would need a more advanced scan tool.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOE1953
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What is a advance scan tool?Can you send me pictures of the test port at the fuel rail? I look for it but could not find it. Does the throttle body have to be open to spray choke cleaner into it? Where do I spray it in at? I tried to open the throttle body when press on the gas pedal it did not open. How do I check for a blocked line?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Let's start with what I asked is the security light on solid or flashing with the key in the run position?You could have the correct fuel pressure but If the security system is keeping it from starting by disabling the fuel injector pulse then it won't start.A advance scan tool is one the professionals used and can read all the computers in the car plus do special tests etc.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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The security light on solid so what I do now?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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The codes in the computer is P2101, P1516 will these codes cause no start?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Try relearning the pass lock sensor like hmac300 suggested in a previous post look back on this question there are instructions.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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Those look like throttle body codes like throttle position sensor etc. As far as the security light those would have codes in the body control module which a basic diyer code reader can't read. Those codes would start with a B try relearning the pass lock sensor.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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I tried to relearning the pass lock sensor when I turn switch to run position, the security light turn off in about 3 to 5 seconds.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
SATURNTECH9
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You said it was on solid now it's not?Iam confused.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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When I turn the key to run position the security light is on solid for about 3 to 5 second.
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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I relearning the pass lock sensor the engine still want start I check for spark I don't see no spark when cranking what could be the cause for no spark?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JOERUSS1953
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I relearning the pass lock sensor the engine still want start I check for spark there is no spark when cranking what cause no spark?
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
CYNTHEA CRUZ
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Ck sparks. May have gap, not sparking.I personally hate GMC, ready to junk mine @ 145000 miles
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
KEN L
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Great addition to this thread! Please feel free to help out whenever you are on the site :)

Cheers, Ken
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Wednesday, October 28th, 2020 AT 11:12 AM (Merged)
Tiny
JESSE GESSLER
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  • 2004 GMC ENVOY
  • 6 CYL
  • 4WD
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I have installed an identical 2003 envoy engine. It is said to have had 9k miles on it. The install went well. However, it is acting like it is not getting fuel to the fuel injectors. There was no flashing security light. There is fuel to the engine when the key "is turned on". The engine will start turn over if starter fluid is used. I preformed the 30 min security relearn process with the correct key type/process. But could not tell is "it took" due to the fact that no flashing light was there. No other codes are being thrown. Thank you for any help.
Jesse
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Thursday, October 29th, 2020 AT 9:40 AM (Merged)

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