My 2000 gmc sierra won't start. changed the battery all lights including the instrument lights come on but it won't crank. i've seen on other forums that this has happened alot to other gmc's not just the 2000, i've seen solutions to using another key to wiggling the ground cable to changing the starter and fuses. what can i do.
Well stop looking on forums , most of those people don't have a clue ! Looking at a wiring diagram of the starting electrical circuit for your vehicle ,then testing for B+ voltage an good grounds where they should be is how to find and fix the problem , not guessing an listing to other people on forums . Something that fixes there problem was just lucky guess. By you saying it won't crank i take that to mean that when you turn the key to the start position nothing happens ? Is this correct ? A lot of people get that mixed up with the vehicle won't start a run . Do you know what a wiring diagram is ? What a DVOM -digital volt ohmmeter is ? How to use them for testing a electrical circuit .
What size engine does it have ? Is it a 4X4 ? Manual or automatic transmission ?
Free wiring diagrams here http://www.bbbind.com/free_tsb.html
Enter your vehicle info. year , make , model and engine size. Under system click on engine ,then under subsystem click starting Click the search button then the blue link. Look at the wiring diagram , a lot of thing's involved . Ignition switch ,park neutral safety switch if it has a automatic transmission , clutch pedal position switch for manual trans , plus the starter motor relay ,starter motor . This is how professional automotive tech's find and fix electrical problems , it takes year's of training to get good . Plus thing's change all the time .
Electric Testing Techniques You Need to Know
SOURCE: my 2000 gmc sierra won't start. changed the
Just maybe it's mechanical.Internal to the steering column is an activator rod that manually makes the contact in the ignition switch.It's the cast piece that is molded to the activator rod that breaks.Two things you can do;tilt the steering wheel all the way up and try again to start(the cast piece spreads before it breaks,by tilting you gain a little extra throw on the switch).This will only work a couple times before complete failure of the casting.The other is to move the cover that's just below the tilt lever enough to get to the rod and move it with a pliers to start.If it's mechanical these things do work,I ran my truck with a vice grip for a couple weeks until I could get the parts for the repair,but replacing the broken part is smarter and won't scratch up your column like mine.
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