71 Relay? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**uncle** · 05-09-2005, 05:28 PM

The relays are located under the hood on the driver's side near the top of the cowl. I've been told several different things,but I figured someone on the board knew for sure. Thanks in advance and are the relays neccessary?

JimKshortstep4x4 · 05-09-2005, 08:24 PM

The relays are part of the TCS system, (Transmission Controlled Spark) and presumably by now everything has been jumpered out. If you remove them I would suggest pulling the harness as it is completely separate from the main harness. The engine will run just fine without the relays as they controlled when the vacuum advance would work.

Jim

**uncle** · 05-09-2005, 10:03 PM

Thanks!

05-09-2005, 05:28 PM	#1
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	71 Relay? The relays are located under the hood on the driver's side near the top of the cowl. I've been told several different things,but I figured someone on the board knew for sure. Thanks in advance and are the relays neccessary?

05-09-2005, 10:03 PM	#3
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Relay Thanks!

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05-09-2005, 08:24 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The relays are part of the TCS system, (Transmission Controlled Spark) and presumably by now everything has been jumpered out. If you remove them I would suggest pulling the harness as it is completely separate from the main harness. The engine will run just fine without the relays as they controlled when the vacuum advance would work. Jim



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