2005 gmc issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rollo McFlurry · 05-07-2013, 08:45 AM

I need a little advice. I recently picked up a 2005 GMC sierra 1500 with a 4.3 and a bad transmission. While I had the transmission out I pulled the engine and replaced the pan gasket and rear main seal (it has 214000 miles). It drives really well except when the RPMs rise abouve 3000. At that point it develops a miss and the tach jumps around and I here a clicking or ticking noise. It sounds similar to pre-ignition, but I don't think it is. Possibly electrical? I haven't changed the fuel filter yet, but I think my problem is electrical. Ignition module possibly?

Any suggestions?

05-07-2013, 08:45 AM	#1
Rollo McFlurry Registered User Join Date: Dec 2012 Location: Hanston, KS Posts: 94	2005 gmc issues I need a little advice. I recently picked up a 2005 GMC sierra 1500 with a 4.3 and a bad transmission. While I had the transmission out I pulled the engine and replaced the pan gasket and rear main seal (it has 214000 miles). It drives really well except when the RPMs rise abouve 3000. At that point it develops a miss and the tach jumps around and I here a clicking or ticking noise. It sounds similar to pre-ignition, but I don't think it is. Possibly electrical? I haven't changed the fuel filter yet, but I think my problem is electrical. Ignition module possibly? Any suggestions?



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