When i turn the ignition key over the 1994 gmc suburban will not start. then when i turn the ignition key over again the vehicle will start with no problem. i dont do anything between turning the key over. 1. turn key over it dont start 2. turn key over again and the vehicle starts no problem. What is wrong?

SOURCE: 1994 GMC Suburban front hub / bearing removal

Knock the wheel studs through the assy.

SOURCE: 1994 Jeep 4.0 litre.

this one's tricky. you have to drop the fuel tank and clean the grounds for the fuel pump (such a mess to do) and make sure that the ecu and battery are properly grounded, as well as cleaned. if the problem persists, you may have wiring damage to the fuel pump or the ecu could just be freaking out.

SOURCE: keyless remote wont work, vehicle completely shut down

Hi Russell,

Absolutely no power? No dome light? No head lights? Nothing?
When you step on the brake pedal, no brake lights?

If true, start at the source and pop the hood.

This is going to be a bit of back and forth dialogue. I'll ask some questions and you get me the answers. That way we can get to the root of the problem. To save time, I'll ask multiple questions at a time. Here goes.

• Check the battery. Is it still there? (Valid question with no evidence of power)
• Are the terminal clamps tight?
• Are the terminals clean and free of corrosion?
• Are all the belts in place and tight? (pay special attention to alternator)
• If you have a voltmeter. test the voltage at the battery terminals. It should be +12.5VDC.
  

SOURCE: 1999 GMC Suburban Wont Turn Over

It sounds like you have a security problem, I had the same thing it would fire and run for half of a second and then that was it if anything at all. Had the security system rebooted, now it starts and runs fine.

SOURCE: gmc suburban 1500 4 wheel drive 1994 is sending a

code 28 is transmission range pressure switch, check the fluid level and get back to me, hope this helps. Please rate my fix as i strive to be the best Thanks Ray