My 99 Jimmy GMC wont start and I have check the fuel pump, altanator, battery,

[Debra G]

fuses, spark what next?
I tested the alt at autozone, purchased new battery, did fuel pressure tester with tester (58 pounds) did the spark test with the plug and wire, visually checked fuses.
What else could I look for?

 

[pedro7of9]

i assUme battery is good,,not setting off security system/light
inwws info on symtoms...why check alternator if cranking ok??
again I assUme is turning over fast enough..you say has spark..answer?? no fuel..checked fuel pump u say..how? with pressure gage [gauge]?
My 99 s 10 needed new "spider" fuel regulator last yr

 

[Molson02536]

fuses, spark what next?
I tested the alt at autozone, purchased new battery, did fuel pressure tester with tester (58 pounds) did the spark test with the plug and wire, visually checked fuses.
What else could I look for?

You need 62-65 PSI of fuel to get the engine started. Try using some starter fluid at the air intake where the air cleaner is. See if the engine will start, if it does. Then you have a fuel fuel pressure issue from a bad fuel sending unit or a bad ground wire to your fuel sending unit.

Good luck and keep us posted.

 

[GrantG82]

Just an idea for ya, i had the same problem with my 99 jimmy and it was just a bad coil. it just had a small crack in it.