Question about 1998 GMC Sonoma
Alternator removed and bench tested ...ok. Terminals are clean no wires appear ballooned (from internal corrosion.
CK SERPINTINE BELT TENSIONER ,IF IT IS NOT MANTAINING CORRECT TENSION ON BELT IT WILL SLIP AT HIGHER RPM, ALSO CK BATTERY ,BAD CELL CAN CAUSE THIS ISSUSE
Posted on Nov 20, 2014
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Posted on Jan 02, 2017
I own a shop, and think this; If you have a Chilton's Repair Manual, you can go to the back of the book, and locate the typical wiring diagram for most all GM vehicles. They are basically the same on all of them. I know the Haynes Manual has these in the back pages, so look there first. I have a feeling you have not got the neutral safety switch wired up. There should be a yellow wire that comes from the ignition switch that goes to this switch. The switch is located under the dash near the clutch linkage on a straight drive, and on the transmission for an automatic. There should be a purple wire that comes from this switch that goes to the starter solenoid. It should have power on it "only" when the ignition switch is turned to the start position, and the neutral safety/clutch start switch is activated. This switch may be out of adjustment, and not sending any power to the starter solenoid. This wire should hook on the terminal that is closest to the engine block. The other wire will have power on it all the time when the ignition switch is in the on position, and should hook to the (hold in winding) on the other side of the solenoid. You may be loosing power, or not have any power on the purple wire that activates the (pull in winding that is closest
Posted on May 18, 2008
check your ignition did one of these before changed 3 starters before finding out it was ignition switch not making connection in switch good luck
Posted on Feb 07, 2010
Go to autozone or whatever auto parts store is close to you and have them check your charging system. Most places do this for free and they can determine exactly what part you need to replace.
Posted on Dec 12, 2010
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