Question about GMC C1500
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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Posted on Jan 02, 2017
The timing (base), is 0 degrees before tdc. Keep in mind the timing connector must be unplugged. usually a brown wire with a black tracer, has a single connector, located under glove box, or by distributor. Thanks...
Posted on Sep 22, 2010
That's a posibility!
Test fuel pump pressure, if it is low or doesn't hold up, change it before quits.
Also, check the fuel pump relay, it could be stucked.
Posted on Mar 07, 2010
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