Spark plug removal

**BADASS2000SS** · 06-17-2009, 12:45 AM

Originally Posted by rbob93

You must be referring to this:

Information on New Spark Plugs and Gapping #03-06-04-060 - (10/24/2003)
Information on New Spark Plugs and Gapping
2004 Buick Ranier

2002-2004 Cadillac Escalade, Escalade EXT

2003-2004 Cadillac Escalade ESV

2004 Cadillac CTS-V

1997-2004 Chevrolet Corvette

1998-2002 Chevrolet Camaro

1999-2004 Chevrolet Silverado

2000-2004 Chevrolet Suburban, Tahoe

2002-2004 Chevrolet Avalanche

2003-2004 Chevrolet Express, TrailBlazer

1999-2004 GMC Sierra

2000-2004 GMC Yukon, Yukon XL

2001-2004 GMC Yukon Denali, Yukon XL Denali

2002-2004 GMC Sierra Denali

2003-2004 GMC Envoy XL

1998-2002 Pontiac Firebird

2004 Pontiac GTO

2003-2004 Hummer H2

with 4.8L, 5.3L, 5.7L or 6.0L V-8 Engine (VINs V, P, T, Z, G, S, N, U -- RPOs LR4, LM4, LM7, L59, LS1, LS6, LQ9, LQ4)

A new spark plug has been released for use in the above vehicles. The new spark plug has an Iridium tip instead of the current Platinum tip. Due to the different tip design, the gap of the spark plug has also changed. The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing and should not be changed or damage to the spark plug may result. Any new spark plug found to not be properly gapped should not be used.

Document ID# 1396703

So if you're not running the iridium tip plug noted, you should be fine with stock gap.

That sucks...I bought those plugs that came gapped at .040. I changed them to 0.55. They still seem to run fine so far! And for the record, 45 minutes is just about right, it would take less time if I didnt have to keep replacing the bottles of budlight! Usually one bottle per plug, by the time I get to #8, I am so buzzed I dont feel the coil pack digging into my forearm.