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2003 Chevy Silverado check engine light?

Tiny
CATREASM
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 60,000 MILES
Sometimes when I'm pulling my 2 horse trailer with horses in it. My check engine light will come on. My temp. Gauge and oil gauges look good. When I unhook the trailer it will go off and be fine. This has happend 2 times now. What does this mean?
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Wednesday, June 18th, 2008 AT 1:31 PM

5 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
First thing you need to do is have the codes read, Autozone does it free, Post the results with the code number(s). Even if the service engine light is not on, there should be freeze frame data stored.
If it won't make it to Autozone, buy a cheap scanner, they can be had for 30-40 dollars, a good investment, since they cover all cars sold in the USA from 96 on.
If the light is blinking, it means possible damage to the converter. Service it right away!
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Wednesday, April 14th, 2021 AT 6:48 PM
Tiny
CATREASM
  • MEMBER
  • 4 POSTS
The light is not blinking. The code is P0101 mass or volume air flow. What does this mean? Thanks
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+1
Wednesday, April 14th, 2021 AT 6:48 PM
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Check your air filter and maf sensor for blockage of dirt, leaves, ect. You may have to replace the sensor.
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Wednesday, April 14th, 2021 AT 6:48 PM
Tiny
CATREASM
  • MEMBER
  • 4 POSTS
Thank you so much. You guys are awsome.
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Wednesday, April 14th, 2021 AT 6:48 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Glad we could help.
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Wednesday, April 14th, 2021 AT 6:48 PM

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