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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15133
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a 1999 gmc suburban 2wd 5.7L. What its doing in

Customer Question

I have a 1999 gmc suburban 2wd 5.7L. What its doing in losing power and running rough half the time and then it starts running ok. I just put the code reader on and this is what i got.. c0236 c0281 p0102 c0226 c0222 and c0237 any help would be cool, im kinda stuck thanks, Lonnie.
Submitted: 3 months ago.
Category: Chevy
Expert:  Jesse Southard replied 3 months ago.

hi I will be glad to help. The code that is causing your rough run is the p102.

Expert:  Jesse Southard replied 3 months ago.

P102 is for the mass air flow low frequency. Basic checks include looking for restrictions in air intake sysem,filter.etc... Look at the wiring connection at mass air flow sensor. Most likely you will replace the sensor to correct, but perform other checks first. The c codes are for the abs and traction system

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