SPONSORED LINKS

4X4 service light on

Tiny
WENDYENGLERT
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 79,000 MILES
I have a 2003 Blazer the encoder motor for the 4x4 is bad. Is there more then one encoder motor for this year and do I have to have it programed by a GM dealership?
Friday, April 1st, 2011 AT 10:03 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
2003 Chevrolet Astro 4x4 service light on

https://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, April 1st, 2011 AT 11:49 PM
Tiny
WENDYENGLERT
  • MEMBER
  • 4 POSTS
Already have the code. P0308 motor A/B Ckt open they ran diagnosis and found encoder motor open
Was this
answer
helpful?
Yes
No
Saturday, April 2nd, 2011 AT 4:59 PM
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
According to my reference, the P0308 code is a short to ground on either A or B motor control circuits. You will need to find where the short is and fix it. Look for frayed wires and missing insulation.
Was this
answer
helpful?
Yes
No
Tuesday, June 14th, 2011 AT 4:39 AM

Please login or register to post a reply.

Related Transfer Case Service Content

Transfer Case Service
GUIDE
Transfer Case Service
We are a group of ASE certified technicians that have created this guide for you to save money when doing the job yourself, or see what you are paying for when taking your...
VIEW MORE

Sponsored links