Question about 1989 GMC Sierra

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Terminals on GMC 1989 replacement starter

Am replacing the starter on my old 1989 GMC sierra truck. The old starter had only one little terminal screw .This new replacement starter has two small terminal screws a "S" and an "I" which terminal do I use to reattach the wire.

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Your new starter should have a S and a R terminal and also a large terminal thats for your main power . funny thing is im having starter problems with same truck man.

Posted on Mar 29, 2009

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Hi there,

Well you can please follow the below steps -
1. Park your GMC Sierra on a level surface, activate the emergency brake and place blocks behind the back tires for safety. Disconnect the negative battery cable with a terminal puller. Raise the front end of the truck with a jack for easier access to the starter.
2. Remove the right front wheel, right front fender splash shield and turbocharger exhaust pipe from your GMC Sierra.
3. Unscrew the starter mounting bolts and place them in the jar to prevent loss, because you will need them later. Remove the malfunctioning starter from its position next to the engine.
4. Disconnect solenoid terminal wires and electrical connections from the starter. Remove the heat shield and bracket from the starter to use on the new one, placing bolts in the jar. Your malfunctioning starter should now be clear of the vehicle.
5. Take your malfunctioning starter to the parts store with you. After-market distributors re-manufacture most of the starters they sell, so you can likely obtain a partial credit toward your new starter by exchanging your old one. Be sure that you take care not to damage the starter in transit, because the better condition it is in, the more you can get for it.
6. Purchase a replacement starter that has the same or higher cranking capacity (power rating) as the original starter in your GMC Sierra. Also, match the bolt patterns, drive gears and electrical connections. Your owner's manual may list specifications or the auto parts technician will help you determine them. Please post comments for further help or information.......

Good Luck!!

Thanks

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