☰
Login
Join
×
Ask a Question
Questions by Vehicle
Repair Topics
Testing / Diagnostics
Repair & Service Guides
Symptoms
Warning Lights
Trouble Codes
How It Works
Videos
Login
Become a Member
Home
Pontiac
Grand Prix
Engine
Serpentine Belt
Serpentine belt replacement?
2008 PONTIAC GRAND PRIX
127,500 MILES • AUTOMATIC
BTSATTEL
MEMBER
1 POST
Which pulley is the tensioner
Images (Click to enlarge)
May 23, 2026 at 4:05 PM
STRAILER
✓
Experienced Mechanic
55,549 POSTS
I assume you need the belt diagrams for the 3.8 correct? Here is a diagram which I marked the tensioner pulley for you and a guide to help you do the job as well.
https://www.2carpros.com/articles/replace-serpentine-belt/
Check out the images (below). Let me know if you need anything else.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
May 23, 2026 at 7:54 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Add image or video
Ask a new question
Frequently Asked Problems for This Vehicle
Engine won't start
→
Engine stalls while driving
→