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70BLAZERX2 · 12-17-2011, 06:47 PM

do you have a check engine lite on ,with key on engine off?

also check both ground wires from back of motor to firewall..for good clean contact...It may be something simple...

try turning the dist...a little and see if it will hit..They have to be set right on (0) or will not run...I had the same problem not to long ago...

12-17-2011, 06:47 PM	#7
70BLAZERX2 Registered User Join Date: Jan 2010 Location: GREENEVILLE TENNESSEE Posts: 1,311	Re: Help before I go crazy. 99 suburban 5.7 vortec wont start. do you have a check engine lite on ,with key on engine off? also check both ground wires from back of motor to firewall..for good clean contact...It may be something simple... try turning the dist...a little and see if it will hit..They have to be set right on (0) or will not run...I had the same problem not to long ago...