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2004 Chevrolet Trailblazer Repair Question


Topics covered: Engine, Spark.
Mileage: No information provided.

Asked on January 29, 2013

Chevrolet Trailblazer Engine Problem

I need help locating my ecm
Avatar Asked by schrockem

Answer

Replied on January 29, 2013

on the side of the motor??

it would help if we had an engine size

why are you replacing it, very uncommon failure

Roy

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided
Replied on January 29, 2013

it is a 4.2 L6
sorry i am kinda new at this my husband works nights so i am trying to fix it!!! i am trying to fnd it so we can have it tested autozone told my husband to bring it in!!! at irst we thought it was the icm and then icalled autozone and they said it didnt have one. the 3rd cyl. was misfiring so we changed the 3rd coil and thespark plug but now it is still misfioringso they said it could be an icm or ecm poblem!!!!

Tiny Response from schrockem
1 question asked
Replied on January 29, 2013

my husband will be home at 5 am cst maybe then i can get him to help me record what is doing and post it !!

Tiny Response from schrockem
1 question asked

Replied on January 29, 2013

first of all, autozone is a parts store with parts salesman, not technicians. you need a shop that has technicians that will pinpoint your failure and repair it correctly.

autozone cannot test a pcm off the car.

Tiny Answered by ASEMaster6371 (expert)
24,836 answers provided