engine light comes on while going at an uphill pull and loses power

Asked by Jan 25, 2014 at 06:12 AM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

I have a 2002 Chevy Silverado 1500 pick up and the engine light comes on while driving uphill and loses power , have changed senors and wiring and spark plugs, any solutions on what else could be wrong. Stumped

1 Answer

10,035

The check engine light only comes on while going up hills? This could be any number of things. Either a sensor or component is failing only under those conditions or something else is effecting the PCM like a slightly plugged exhaust, bad injectors, etc. For issues like this it is cheaper to get a scanner that can read you PCM codes and live data during the issue then you have an idea where to start.

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