Question about 1991 GMC Sierra
When it won't start does it have spark? Sounds like it might be the ignition module.
Posted on Jul 31, 2010
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Posted on Jan 02, 2017
A bad ignition module can give you fits!!!! Replace it even if it doesnt fix it! You will be glad you did! Most likely that is the problem ,however!
Posted on Mar 21, 2010
If you are at or near the 100,000 mile mark then your fuel pump may have failed. If you remove the fuel filler cap and listen carefully at the filler neck while someone turns the ignition key to "run" [don't actually crank the engine] you should be able to hear the fuel pump buzz for about a second and a half as the key is turned On. If you don't hear the pump buzz then odds are your pump is dead. Your pump may have actually failed making it appear as though you ran out of fuel. Not to uncommon. Hope this helps and good luck!
Posted on Nov 03, 2011
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