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95 S_Trucker · 09-13-2017, 07:20 PM

Can you take a pic of the engine? There are major differences in the pre 96 engines(tbi or CPI) and the 96 and later engines. The cylinder heads are not interchangeable between the 2. The intake manifolds have different bolt patterns.

The 96 and newer call for platinum or iridium plugs. Never gap an iridium plug. It will chip and ruin it. Just make sure the plug wasn't dropped or damaged.

09-13-2017, 07:20 PM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,178	Re: 1996 GMC Jimmy SLT 4×4 Can you take a pic of the engine? There are major differences in the pre 96 engines(tbi or CPI) and the 96 and later engines. The cylinder heads are not interchangeable between the 2. The intake manifolds have different bolt patterns. The 96 and newer call for platinum or iridium plugs. Never gap an iridium plug. It will chip and ruin it. Just make sure the plug wasn't dropped or damaged.