HELP! 2020 Chevy Silverado 5.3 how to remove serpentine belt?

Emmanuel Torres · July 14, 2020

I’m working on a 2020 Silverado 5.3L. Came into the shop needing a higher amp alternator for a ramp being installled in the bed. New vehicle to me and when I went to take off the serpentine belt I see no tensioner......asked around the shop and no one had any answers. Has anyone ran into this at all. If so I would appreciate your help.

Gangly · July 17, 2020

On 7/14/2020 at 4:59 PM, Emmanuel Torres said:

I’m working on a 2020 Silverado 5.3L. Came into the shop needing a higher amp alternator for a ramp being installled in the bed. New vehicle to me and when I went to take off the serpentine belt I see no tensioner......asked around the shop and no one had any answers. Has anyone ran into this at all. If so I would appreciate your help.

There is no tensioner, you need a specially tool ridiculously named a Universal Stretchy Belt Installer (GM EN-51767-2 - Universal Stretchy Belt Installer). Gimme a few minutes and Ill get the write-up for you.

Gangly · July 17, 2020

Hopefully this helps....

Special Tools

EN-51767-2 - Universal Stretchy Belt Installer
EN-51767-5 - Webbing

Equivalent regional tools: Special Tools

Removal Procedure

Underbody Splash Shield » Remove — Underbody Splash Shield Replacement
Insert the EN-51767-5 - Webbing (1) between the pulley (2) and belt (3). (Image 1)
Rotate the crankshaft pulley clockwise to walk the EN-51767-5 - Webbing (1) around the circumference of the pulley.
With the EN-51767-5 - Webbing (1) around the circumference of the crankshaft pulley, pull the loose end of the EN-51767-5 - Webbing (1) outward to remove the belt from the crankshaft pulley.
Remove the belt from the generator pulley.

Installation Procedure

Install EN-51767-2 - Universal Stretchy Belt Installer (1) onto the balancer. (Image 2)
Position the belt (2) on the balancer as shown.
Slowly rotate the crankshaft in a clockwise direction until the belt (2) fully seats on all pulleys.(Image 3)
Inspect the drive belt (1) for proper installation and alignment.
Rotate the balancer (1) and additional 360 degrees to ensure proper belt installation.
Underbody Splash Shield » Install — Underbody Splash Shield Replacement

Image 1. Removal Image with Tool highlighted in Blue

Image 2. Installation with Tool Highlighted in Blue

Image 3. Installation with Tool highlighted in Blue

Gangly · July 17, 2020

Its actually really easy with a Stetchy Belt all purpose tool. Lisle has one and you can see how easy and quick it is to use.

Emmanuel Torres · July 17, 2020

3 hours ago, Gangly said:

Its actually really easy with a Stetchy Belt all purpose tool. Lisle has one and you can see how easy and quick it is to use.

Thank you very much for this information

CrapMechanic · March 14, 2021

I tried the Lisle tool. Does not fit on 2019 Trailboss crank shaft pulley. Called some dealerships - they wont sell me the blue Stretchy Belt Installer pictured above due to patent. Not having a tensioner in there is borderline retarded. Good luck. I'm stuck in my own driveway like a genius.

WhiteLTZ01 · March 14, 2021

Not sure if you have room on the T1, but my l83 K2 truck used a stretch belt for the brake vac pump. I used zip ties as I didn't have access to a stretch belt tool once i was in there. Cut the belt off of course. Worked perfectly.

Sent from my SM-G975U using Tapatalk

gemarsh · March 15, 2021

WTF!

CrapMechanic · March 15, 2021

16 hours ago, WhiteLTZ01 said:

Not sure if you have room on the T1, but my l83 K2 truck used a stretch belt for the brake vac pump. I used zip ties as I didn't have access to a stretch belt tool once i was in there. Cut the belt off of course. Worked perfectly.

Sent from my SM-G975U using Tapatalk

Thankyou for your reply. Good advice. I tried this about 10 times. There is so much pressure that it snaps the zip ties.

16 hours ago, WhiteLTZ01 said:

WhiteLTZ01 · March 15, 2021

Yeah I had to use some pretty large ones, but i bet that serp belt is a lot more to pull over then the small vac pump belt I did. Good luck!

Sent from my SM-G975U using Tapatalk

CrapMechanic · March 16, 2021

Thanks. I've modified the Lisle tool to fit over the lip of the crank shaft pulley. Will give it a go. If it doesn't work I will have to take it into the shop and have them do it. Not a lot of options for me - live alone in remote mountain area at 10k ft, foot of snow on the ground, no garage, below freezing outside - there's only so much of that I can handle when I'm lying on the frozen ground with 20 mph cross winds. it gets old real quick like. Absolutely ridiculous. Had an old Tahoe I drove to 300k miles - so easy to work on....same 5.3L V8.

EXSlider400 · March 19, 2021

On 3/14/2021 at 9:03 PM, gemarsh said:

WTF!

Totally agree...they’re making vehicles now so only the dealerships can work on them!!!

Ryan c · December 26, 2021

On 3/15/2021 at 9:07 AM, CrapMechanic said:

Thankyou for your reply. Good advice. I tried this about 10 times. There is so much pressure that it snaps the zip ties.

Put a bunch of zip ties on it I had 2 of out 7 break but it held and worked great. The guy workin the counter at napa told me that trick and saves me a big tow bill

Ryan c · December 26, 2021

On 3/15/2021 at 9:37 AM, WhiteLTZ01 said:

Yeah I had to use some pretty large ones, but i bet that serp belt is a lot more to pull over then the small vac pump belt I did. Good luck!

Sent from my SM-G975U using Tapatalk

Just did mine last week. 7 normal size zip ties for serpentine belt. 2 broke, first one when it was bout ¾ of the way on and second when it was right at the end but it got it done. I would buy some decent zip ties if u r in colder weather cause I know the cheap ones tend to break very easy when they r cold.