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Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 16099
Experience:  15 years GM master tech
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HAVE CODE P1626 SECURITY LIGHTS ON, ENGINE TEMPT TO START

Customer Question

HAVE CODE P1626 SECURITY LIGHTS ON
JA: Tell me a bit more about what's going on so he can help you best.
Customer: ENGINE TEMPT TO START THEN DIES LIKE NO FUEL COMING
JA: Are you hoping to fix this yourself?
Customer: YES
JA: Great! What have you tried so far?
Customer: NOTHING
JA: Is there anything else the Chevy Mechanic should be aware of about your Chevy?
Customer: CHANGED FUEL PUMP
JA: Our top Chevy Mechanic is ready to take your case. Just pay the $5 fully refundable deposit and I'll fill the Chevy Mechanic in on everything we've discussed. You can go back and forth with the Chevy Mechanic until you're 100% satisfied. We guarantee it.
Submitted: 11 months ago.
Category: Chevy
Expert:  Gary replied 11 months ago.

can you tell me the year and model this is ?

Customer: replied 11 months ago.
1999 Chevy 2500 express
Expert:  Gary replied 11 months ago.

if you follow this here will it start ?

  1. Insure the ignition key is in the ON position.
  2. Insure all passlock TM module and VCM/PCM DTCs have been cleared.
  3. Momentarily rotate the ignition key to the CRANK position (Do NOT start the vehicle), then release it to the RUN position (Do NOT key OFF in the process).
  4. Wait 10 minutes . Observe the SECURITY indicator. Refer to the following list for the appropriate responses:
    • If the passlock TM sensor was replaced the SECURITY indicator will flash for the 10 minutes duration.
    • If the passlock TM module was replaced, the SECURITY indicator will flash for a few seconds and then remain ON for the remainder of the 10 minutes duration.
    • If the VCM/PCM was replaced with a new programmed VCM/PCM and connected to the vehicle for the first time, the vehicle will Start and this procedure may not be necessary.
    • If the replacement VCM/PCM was connected to any vehicle at any other time, even momentarily, the SECURITY indicator will flash for a few seconds and then remain ON for the 10 minutesduration.
  1. The SECURITY indicator will transition from flashing to ON briefly to OFF after 10 minutes if remaining in the ignition ON position.
  2. Turn the ignition switch to the OFF position and wait for 10 seconds .
  3. Repeat steps 3-6 two more times. The new security code is ready to be communicated among the Passlock sensor, Passlock module and VCM/PCM. The new password ***** ***** on the next ignition lock cylinder cycle from OFF to CRANK to ON (start attempt).
Expert:  Gary replied 11 months ago.

did that work at all ?