Question about 1999 GMC Jimmy
AC 41803 Drivetrain:Four Wheel Drive;
@Gap .045" This is a Platinum High Performance Spark PLug
Option : ASP AR25
@Gap .045"@ High Performance
Stay away from those Gimmick Spark Plugs , they are just more money for nothing. A good platinum spark plug is all you need, the key is to gap it correctly to your application...
On GM products Vin # W it is .045 plug gap
On Gm products Vin # Z it is .035 plug gap
You will not have huge gains in fuel mileage from replacing spark plugs except to say that if your old ones are just extremely bad, there is no magical spark plug with extra mileage manufactured into it.... Hope this helps...
Posted on Aug 24, 2009
Testimonial: "Thanks for the reply. Spark plugs are pretty basic, but I would have fallen for the higher end. Assume I have VIN W as there is no Z in the vin number"
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