Question about GMC C1500
If the test was done fully then you should have had a charge test done to check if the alternator is charging the full output in amps as well as volts they should have also done a "drop test" on the battery to check thats holding its charge if the battery is good and is reciving a good charge then the charging system is working ok,,,to do a quick test on this,,,get a meeter and turn it to "volts DC x 20+" hold it on the battery and start the engine up turn on all head lights, heater, flashers, then rev the engine to a steady 2000rpm and the meeter should read 13.5-14.5 volts DC thats showes its charging ok,,,by volts only! not amps!!
if your having starting up problems like the starter is slow turning the engine over it could be you have a worn out starter,,,
Posted on Jul 31, 2010
With key on,it should read 12 volts,now check the large wire on the back of the alternator with key off,it should read 12 volts,if it does not,then ,it is not getting voltage from the battery,just run a wire,the same size,or larger on the back,along with the other wire,all the way to the battery positive side.This will solve the problem.If the small wire is not getting voltage from the ignition switch,then there is a fuse blown,or the ignition switch is bad.You can run a wire from the fuse box,to the alternator,just make sure it is on a fuse that just has power with key on,not off.If this was at all helpful,please rate,thank you.
Posted on Jul 31, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 02, 2016 | 1989 Oldsmobile Cutlass Ciera
Feb 24, 2015 | Dodge Cars & Trucks
Aug 29, 2012 | 2003 Nissan Maxima
Mar 09, 2011 | 1989 Ford Thunderbird
Nov 19, 2010 | 2002 BMW 3 Series
Sep 27, 2010 | 2002 Toyota Camry
Mar 05, 2010 | 2002 Pontiac Montana
Dec 01, 2009 | 1991 Honda Accord
Jul 30, 2009 | 1989 Chevrolet Camaro
Nov 21, 2008 | 1989 Ford Thunderbird
113 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: