Warranty: This genuine part is guaranteed by GM's
factory warranty.
Fits the following Vehicles:
2003-2006 Chevrolet Express 1500 | Base, LS, LT | 6 Cyl 4.3 L GAS
Chevrolet Express 1500 Spark Plug
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Chevrolet Express 1500 Spark Plug Parts Questions & Experts Answers
Q: How to replace spark plugs on Chevrolet Express 1500?
A: You must start the Spark Plug replacement process by taking off the Spark Plug Wires followed by loosening each Spark Plug 1 or 2 turns. Dust removal around the spark plugs should be done by brush or compressed air before extracting the plugs one at a time with the cylinders assigned to each Spark Plug clearly marked on a tray. After proper placement of each Spark Plug washer install the plugs while checking the gap between the electrodes for accuracy at 1.524mm (0.060 in). The technicians should perform hand-starter procedures on the spark plugs before tightening them to 15 n.m (11 lb ft) for used heads while applying 20 n.m (15 lb ft) for new aluminum heads and 30 n.m (22 lb ft) for new iron heads. After installing the Spark Plug Wires put an end to the procedure.