Product ReviewsACDelco 12574976 Engine Control Module

Well worth the money. Eazy fix

This was purchased for a 2004 Trailblazer. 4.2L I6 Atlas engine. 174,000 miles. The OEM computer 5v reference failed. I installed this and received the security light. Followed the instructions enclosed and the light went out. Vehicle started and ran well. I did not have to do a crankshaft relearn. Read full review...

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

fit as described.

Well, The part fit. It works and really quite simple to get up and running. Great product so far.

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

ECU

The ECU performed well and it comes with instructions to program key.

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

Great product

Worked perfectly no issues

Works as expected

Works great.

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

It needs to be returned and reprogram

It want work. It must have not been programmed right. I've had it to two mechanics.
And it still won't work

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

Would definitely use again

Exactly as represented at a very fair price.

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

Easy and fast

Easy to install directions

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters

Trailblazer computer

Works as it should, would buy from again.

Verified purchase:  Yes | Condition: pre-owned | Sold by: flashmasters