Skip the auto shop - Our mechanics make house calls

Q: Is Check Engine on because of the AC? 2003 Chevy Silverado

asked by on

A computer was put on my truck and I was told that the car had no problems that maybe it was the Gas cap, or the reservoir needed fluid, I took care of both of those suggestions and still the check ingine light is on, the truck works great, mobile 1 oil, and chevron 91 oc. Fuel is used on the truck. But. The light is still on. I'm wondering if it has anything to do with the ac. What's your suggestion.

My car has 159865 miles.
My car has an automatic transmission.

A: Hello - it is not likely that the AC is set...

Hello - it is not likely that the AC is setting the Check Engine Light on. The only way to know why the Check Engine is on is to have the problem codes read. Most auto parts stores will read the codes for you for free. If it is not convenient to have the codes read, I would recommend having the codes read by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Check Engine light

The Check Engine Light will come on for a number of reasons. Since the light is on, I would start by scanning the computer for codes. The codes will help to isolate the problem. If the light is flashing, then...

Q: Strange braking issue.

Hello, based off the information (1967) not sure if that is the correct year. For the year of 1967 it would be an air issue and possible brake (pads or shoes) surface (wear or contaminated) such as oil on brake...

Q: Oil filter

Conventional spin on oil filters have a tightening limit, typically no more than one full turn (often less), once the gasket just touches the block mount. If you tighten past that point, the case seal could leak. If after looking...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...