Find Your Transmission
Search by VIN, year, make, and model — our team confirms bellhousing and ECU compatibility.

Loading…

Remanufactured engines & transmissions, tested to a stated standard.

Shop & catalog

Shop catalog
Contact Us
About Us
Careers at Peak Powertrain
Warranty — Peak Powertrain
Customer Reviews

Company

About Us
Contact Us
Tech PitStop
Warranty

Support & Policies

Help Center
Assistant
Shipping
Store Policies
Return Policy
Terms & Conditions
Security & Privacy
Security Policies

My Account

Track Order
Forgot Password
Core Return
Warranty Claim

Contact Us

Monday – Friday

9:00 AM – 7:00 PM EST

Saturday

11:00 AM – 4:00 PM EST

socials@peakpowertrain.com Contact page Support

Powered by Creytix

The platform behind the tooling, design pipeline, and control panel that power Peak Powertrain.

See how Creytix powers this site →

Peak Powertrain sells automotive remanufactured parts and drivetrain components. Official checkout and support are only on our listed domains.

Report suspicious email or fake sites impersonating us: socials@peakpowertrain.com · Contact us

EarnedStar · Company reviewed TrueStar · Item reviews

Expedia Parts
EP Transmissions
EP Engines
Ironclad Auto Parts
Peak Powertrain

©2025 Peak Powertrain. All rights reserved.

Speak to a Specialist Now (844) 846-7325 · 1-844-846-7325 · English · EspañolEN · ES

Call now — specialists available in English and Español

Peak Powertrain

Engines Transmissions Warranty Core Return Reman vs Used Reviews Contact

Loading part details…

2004 GMC PICKUP SIERRA 1500 (99-CURRENT) AT 4.8L 4X2

Back to product

Customer Reviews

2004 GMC PICKUP SIERRA 1500 (99-CURRENT) AT 4.8L 4X2

No reviews yet for this part — be the first to share your experience.

Write a Review

2004 GMC PICKUP SIERRA 1500 (99-CURRENT) AT 4.8L 4X2

* Required question

Order NumberAdd your order number to link this review to your purchase. Leave blank only if you need help from our team first.Product / Part Name

Your Rating *

Review Headline *Comments *Service/Delivery Comments

Bottom Line

Select one

Yes, I would recommend this to a friendNo, I would not recommend this to a friend

Pros

Cons

Nickname *Location *

Photos & Video

Optional — up to 3 photos (5MB each) and 1 video (50MB)

Add an ImageAdd a Video

Email *Phone

By submitting, you represent that you have read and agree to our Terms of Submission and our Privacy Policy.

Reviews for 2004 GMC PICKUP SIERRA 1500 (99-CURRENT) AT 4.8L 4X2 | Peak Powertrain