Misfire, won't start but turns over

30

Asked by Jun 17, 2016 at 09:27 PM about the 1999 GMC Suburban C1500

Question type: Maintenance & Repair

Hi, I have a 1999 GMC Suburban 5.7 L engine
c1500. My trucks just shut off on me in a drive-
thru. My husband thought it was out of gas. We put
gas in and it crunk up ( after we did the three prime
crank method). We drove 1/4 of a mile and then it
just cut off again. We put more gas in and it still
wouldn't crank. The fuel pump turns on and the
wires and spark plugs have been replaced. We
have replaced the ignition control module, the
crank shaft sensor and the coil and it still won't
crank. Gas is getting to the right areas like they are
supposed to. Someone told us that the trucks
computer is gone bad. We have already spent
about $195.00, can anyone save us some money,
please? Should we let this man replace the
computer or is it something else?

7 Answers

30

OK my husband said we didn't replace the coil

1 people found this helpful.
75

If it is turning over freely may be timing chain or belt

1 people found this helpful.
75

did you replace both fuel filters. there is one in the tank and an inline as well.

1 people found this helpful.
Best Answer Mark helpful
30

Have not changed the fuel filters yet. And the guy said he was setting something after he put the crank sensor on. He disconnected a cable from the air filter box and asked me what time it was. Then put it back together like 5 minutes later. I will be sure to tell my husband about the TWO filters and the timing chain or belt. Thank you. I will let you know what we find.

75

PLease drop me a line and let me know if the problem was fixed. If not we will try something different. I am not talking about all mechanics but mamms there are some shisty folks out there who will do things to your vehicle it may run for a few then there they are again trying something else. They are not there to help you, they are there to take your money and thats all they want. What ever happened to the good ole boys!!!!!!!

I had the same problem but I've replaced the fuel pump the ignition coil and distributor cap and rotor and fuel pump relay it still won't start any advice

75

When you turn the key to start the motor, does it sound like the engine is trying to start, or is it just turning freely. If it is turning freely could be it jumped timing,or timing belt or chain no good. Thats what it sounds like to me.

1 people found this helpful.

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