Check eng. light comes on after being on the highway at cruising speed for about 7 mins.

John Lopez

Asked by Sep 16, 2013 at 08:03 PM about the 1992 GMC Suburban K1500 4WD

Question type: Maintenance & Repair

after reaching highway speeds for a few miles or approx 7mins. check eng. light comes
on.  The next time it is started up there is no light until I get on the freeway.

1 Answer

Tom Demyan

If your asking us to guess why the light is on, we're going to tell you to scan for the codes. No sense in guessing when we can pinpoint the problem with a code. Find a OBD-I scanner or have a mechanic do it for you.

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