Check engine light on?

Tiny
FREDRICK6021
  • MEMBER
  • 1981 GMC TRUCK
  • 5.7L
  • V8
  • 4WD
  • MANUAL
  • 39,000 MILES
Check engine light still on when truck is running.
Thursday, January 18th, 2024 AT 2:08 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Hi,

Because of the model year, there isn't an easy way to retrieve diagnostic codes. So, I have to ask what is happening when you use the vehicle. For example, is there a misfire? Are there any drivability issues such as stalling, back firing, loss of power, and so on?

Let me know as much as you can.

Take care.

Joe
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Thursday, January 18th, 2024 AT 9:43 PM

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