My fuel pump has recently been replaced as well as my battery. But now my radio, AC, lights etc do not come on right away when I start the vehicle. What does this mean?

SOURCE: I Have a 2002 blazer that starts but motor dies, surges when accelerating

If this engine is a VORTEC then you may have a problem with the internal fuel system. Under the top plenum there is a fuel reg and poppet valves that inject fuel into the cylinders. Sometimes the tubes that run fuel from the reg to the valves can leak and cause your problem. This cannot be found with pressure check because this occurrs after the reg. PS fuel mileage will go down. Let me know if this helps.Moe

SOURCE: After main battery replacement, the radio will not power up at al

Hi fasterboatma, Your computer stats are gone, the computer was reset when battery was disconnected, your radio is in theft mode, the radio is waiting on a code to be entered. The reason it does this is so if the radio was stolen it cant be used without the code. Look in your owners manual and see if the code is recorded there, if not call a local dealer and they can look it up, they will usually do it for free, if not you will have to take the front bezel off and see if you can see the code printed on the top of the radio. Let me know if I can assist further and please rate this solution. lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

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SOURCE: 2002 gmc yukon, rich fuel code, low fuel pressure @40

you may have two oxugen sensors on your yukon. if so the oxygen sensor that controls that bank may be bad. from what you mentioned in your complaint, it sounds like it is the oxygen sensor.

SOURCE: 2007 Jeep Wrangler Unlimited Crank-No Start. Replaced FP.

Hey Tim take a look at this, will this help ?
SUBJECT:
No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM
OVERVIEW:
This bulletin involves the replacement of the Wireless Control Module (WCM), and if
equipped, the replacement of the Electric Steering Column Lock (ELV). The WCM is also
referred to as the Sentry Key Remote Entry Module (SKREEM).
MODELS:
2007
SYMPTOM/CONDITION:
The customer will experience a no engine crank AND a no engine start condition. Also, the
remote keyless entry (RKE) system will not operate. This condition may be due to an
electrostatic discharge (ESD) from the ignition key into the Wireless Control Module
(WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is
more easily produced. This condition is corrected by the replacement of the WCM
DIAGNOSIS:
1. With the condition present (i.e. the vehicle in the no crank / no start condition), connect
the StarSCAN® scan tool to the vehicle.
2. Turn the ignition switch to the “ON” position, and power up the StarSCAN®.
3. If the WCM is electronically locked up, the StarSCAN® will display the WCM as being
“off bus”.
4. If the no crank / no start condition is present, and the WCM is “off bus”, then reset the
WCM by temporarily removing the IOD fuse (with the key out of the ignition switch),
wait for 10 seconds and then reinstall the IOD fuse.
5. With the IOD fuse reset having been performed, verify that the vehicle will now crank,
start, and run.
6. If the condition is temporarily corrected by performing the above steps, and if the part
number of the WCM is earlier than the part number of the WCM listed in the part
reference table in the Service Bulletin Parts Required Section below, then perform the
Repair Procedure.

SOURCE: 96 Grand Am SE2 2.4L starts and dies immediately

I had the SAME thing with my car!! Remove your air bag module its a grayish looking box that deploys your air bags, my air bag light was on but it was on and off. I pumped gas in my car one night and when i went to crank it my car cut right off after a split second. My mechanic took time on it but discover that it was a secrity issue. He removed the air bag module and presto it fired right up. I thought it was a fuel filter or fuel pump. It was just the air bag module, people freaked out about it once i told them what it was....it should be under the passenger seat, i believe u may have to take out the seat to get to it.