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GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5783
Experience:  GM Grand Master Technician 2007. 14 years experience.
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88 chevy 1 ton 350 engine.....starter good, battery good,

Customer Question

88 chevy 1 ton 350 engine.....starter good, battery good, new cylinder key lock....just get a click when I try to start it
JA: How many miles are on the car? Does the engine turn over at all?
Customer: Engine runs very well, a rebuilt was put in a couple years back.
JA: What is the model/year of your GM?
Customer: 88 1 ton
JA: What year is your GM?
Customer: 1988 Chevy Truck C 3500 Truck 2WD V8-350 5.7L
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: put in a new starter and a new key cylinder lock.
JA: Anything else you think the mechanic should know?
Customer: not sure what that would be
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the GM Mechanic about your situation and then connect you two.
Submitted: 4 months ago.
Category: GM
Expert:  Jared D replied 4 months ago.


Is your truck automatic or manual?

Have you tested for voltage at the starter yet?

Customer: replied 4 months ago.
Truck was working just fine and all of sudden stopped working...nothing.
Customer: replied 4 months ago.
almost a new batter cable going to the starter
Expert:  Jared D replied 4 months ago.

Ok. The click you are hearing- is it a quiet click or a loud clunk?

Customer: replied 4 months ago.
it is more of quiet click
Expert:  Jared D replied 4 months ago.

Do you have a multi-meter to do some testing?

Customer: replied 4 months ago.
I do
Expert:  Jared D replied 4 months ago.

So you will want to test to see what voltage you have at the battery, should be about 12.5 volts or so and then test for 12 volts at the battery cable running to the starter all the way down at the starter.

Next you will need a helper to test the starter solenoid.

Customer: replied 4 months ago.
if the voltage at the starter is good and the solenoid is good....what would be next? just put the starter in a couple days ago.
Customer: replied 4 months ago.
Gonna have to remove the starter to test it....will take some time.
Customer: replied 4 months ago.
am I waiting for a response?
Expert:  Jared D replied 4 months ago.

To test the solenoid you will unplug the solenoid trigger wire and then have someone else turn the key to crank while you watch for 12 volts on the trigger wire.

Expert:  Jared D replied 4 months ago.

If the starter has 12 volts, the solenoid has 12 volts in the crank position, then the starter has to be bad.

Customer: replied 4 months ago.
the only part that has not been replaced in the starting system is the Starter Switch, but it just looks like a plug (for lack of a better word) to me...your thoughts on that?
Expert:  Jared D replied 4 months ago.

If you don't get 12 volts at the trigger wire of the starter then you should suspect the ignition switch. We can do some testing from there if it looks like you aren't getting voltage at the trigger like you should.

I need to step out into the shop for a little bit. Let me know how the voltage testing goes.

Customer: replied 4 months ago.
I will not get to it until later, but you have been a real help. Thank you
Expert:  Jared D replied 4 months ago.

Sounds good. Let me know if you get stuck.

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