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No spark?

Tiny
KAYLA SAMMS
  • MEMBER
  • 1992 GMC SIERRA
  • 340,000 MILES
I just did a bunch of work on it like changed the starter and other stuff but now I'm not getting spark.
Sunday, December 29th, 2024 AT 9:03 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,687 POSTS
The first thing I would do is check the fuses with the key on.

Here is a guide to help and the fuse locations as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

I would also check for 12 volts at the coil with the key on. Check out the images (below). Let us know how it goes.
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Monday, December 30th, 2024 AT 10:36 AM
Tiny
KAYLA SAMMS
  • MEMBER
  • 3 POSTS
Well, it has hardly any fuses at all and its throttle body.
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Monday, December 30th, 2024 AT 11:08 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,687 POSTS
Okay did you find any bad ones? Also is there power to the ignition coil?
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Tuesday, December 31st, 2024 AT 10:59 AM
Tiny
KAYLA SAMMS
  • MEMBER
  • 3 POSTS
Yes there is power to it.
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Wednesday, January 1st, 2025 AT 2:56 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,687 POSTS
Okay, not let's remove the distributor cap and crank the engine over to see if the rotor spins? If so, I would replace the ignition module which fail on these trucks, here is how, let me know.
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Thursday, January 2nd, 2025 AT 10:14 AM

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