Question about 1993 GMC Sierra
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Posted on Jan 02, 2017
theres no advance wire on that engine!!! theres a hash mark on the back of the intake and one on the distrbutor shaft you set the distrib with the has mark and yes!! the ecm! will always reset the timing that is what is does but if it's pinging or knocking then change the ignition module cause the dwell side of it is out of range!
Posted on Jan 14, 2010
Sierra 1500 also C/K Series have three engine sizes; check this...
1993 GMC C 1500 P/U 5.0 liter V-8 VIN "H"
1993 GMC C 1500 P/U 4.3 liter V-6 VIN "Z"
1993 GMC C 1500 P/U 5.7 liter V-8 VIN "K"
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Posted on May 03, 2011
Testimonial: "Thank you very much for the info my son took all the wires off without making a diagram now hes stuck but the diagram you sent will solve the problem."
SOURCE: 1994 gmc sierra 1500 timing
The timing may be adjusted only on those that are equipped with a conventional distributor ignition. if equipped with the distributorless Electronic Ignition (EI) system, the control module set timing and makes all necessary spark changes. On these systems, the cranksshaft position sensor is mounted in a fixed position, therefore not allowing for adjustment. The HVS system found on some 1995-97 vehicles is also not adjustable.
Posted on May 22, 2011
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