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Will not crank

Tiny
DON JOHNSON2
  • MEMBER
  • 1994 GMC SIERRA
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 190,000 MILES
My truck has power to the dash but will not crank. I have replaced the fusible link, the starter, the ignition switch and the coil, still will not crank. Help me please!
Sunday, April 30th, 2017 AT 12:30 PM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,926 POSTS
Hello,

It sounds like you have a clutch safety switch that has gone bad. Here is a wiring diagram and a guide to help you get the problem fixed.

Check for power through the clutch switch when depressed.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken

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Wednesday, May 3rd, 2017 AT 9:56 AM
Tiny
DON JOHNSON2
  • MEMBER
  • 3 POSTS
The clutch switch is good, still no crank. Am checking all grounds now.
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Wednesday, May 3rd, 2017 AT 9:45 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Just to add here, these older GM products have a fusible link at starter and they go bad not letting vehicles start check for voltage on both sides
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Thursday, May 4th, 2017 AT 6:10 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,926 POSTS
Hey Don,

Use the wiring diagram I have provided above to help with your testing and get back to us.

Best, Ken
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Thursday, May 4th, 2017 AT 9:32 AM

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