DIY: Disable 2013 HSA (Hill Start Assist) - Page 12 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

el ess A · 11-21-2025, 08:49 AM

Part number updates:

I know this is an old thread, but it's still potentially useful for anyone needing to get rid of the HSA if someone hadn't done it already. I got to thinking about this the other day when HSA got me on a hill in the ZL1. I have never got used to that thing, and ended up leaving a bit of tire marks behind.

There's been reports that a few cars wacked out with traction control, etc., lighting up the dash with all sorts of warnings. 95% of transitioners have reported no issues. Also some said that the ZL1 and LTs/SS's don't use the same sensor. Which apparently nobody told GM. They even list the MT version as fitting Z/28 as well.

As usual, verify with your dealership that you're getting the right part.

GM parts websites lists the following: The ORIGINAL version part number is listed in bold.

Auto Transmissions (this one should get rid of the HSA in your MT car)

13514502
Replaces: 12784982, 13504156, 13505725, 13575612, 13578326

Manual Transmissions (for reference. You should have one of these part numbers already installed.)

13514501
Replaces: 12784983, 13505726, 13575610, 13575611, 13581120

I purchased the 13578326 years ago, but never got a round tuit to getting it done.

IMO, if you need one, perhaps you could find one in a junkyard or ebay with the p/n's above, etc., fairly cheap, as I doubt these ever go bad. Maybe they do? I dunno. They now list for a pretty penny at list price from GM, but normally can still be found for around less than 100 bucks new. Rockauto.com has them as well. Look under Electrical/Yaw Sensor.

Apparently, they used the MT versions in Lacrosse, Terrain, and Regals, and they used the automatic trans version in the 2010-16 Cruze as well, among others. Have no idea where they're located in the car, but under the console is likely a good spot to check.

Joe.G · 11-21-2025, 09:30 AM

I did this when I first got my car and have had zero issues, I hated the Hill start feature.

camguynj · 11-21-2025, 12:46 PM

Ditto here! I wouldn’t have minded it so much if they put a red light in between the tach & speedo that lit up when HSA was engaged and stayed on until it was disengaged instead a brief msg on the DIC that left you guessing if the HSA was on if you missed seeing the msg.

11-21-2025, 08:49 AM	#155
el ess A Older Than Dirt Drives: 2010 & 2013 Camaros Join Date: Apr 2010 Location: Aiken, SC Posts: 4,686	Part number updates: I know this is an old thread, but it's still potentially useful for anyone needing to get rid of the HSA if someone hadn't done it already. I got to thinking about this the other day when HSA got me on a hill in the ZL1. I have never got used to that thing, and ended up leaving a bit of tire marks behind. There's been reports that a few cars wacked out with traction control, etc., lighting up the dash with all sorts of warnings. 95% of transitioners have reported no issues. Also some said that the ZL1 and LTs/SS's don't use the same sensor. Which apparently nobody told GM. They even list the MT version as fitting Z/28 as well. As usual, verify with your dealership that you're getting the right part. GM parts websites lists the following: The ORIGINAL version part number is listed in bold. Auto Transmissions (this one should get rid of the HSA in your MT car) 13514502 Replaces: 12784982, 13504156, 13505725, 13575612, 13578326 Manual Transmissions (for reference. You should have one of these part numbers already installed.) 13514501 Replaces: 12784983, 13505726, 13575610, 13575611, 13581120 I purchased the 13578326 years ago, but never got a round tuit to getting it done. IMO, if you need one, perhaps you could find one in a junkyard or ebay with the p/n's above, etc., fairly cheap, as I doubt these ever go bad. Maybe they do? I dunno. They now list for a pretty penny at list price from GM, but normally can still be found for around less than 100 bucks new. Rockauto.com has them as well. Look under Electrical/Yaw Sensor. Apparently, they used the MT versions in Lacrosse, Terrain, and Regals, and they used the automatic trans version in the 2010-16 Cruze as well, among others. Have no idea where they're located in the car, but under the console is likely a good spot to check. __________________ 2010 2SS TE, 1 of 822/2013 Camaro ZL1 vert, 1 of 54

11-21-2025, 09:30 AM	#156
Joe.G Drives: 2014 2SS/RS 6SP Ashen Grey Join Date: Aug 2021 Location: NY Posts: 1,775	I did this when I first got my car and have had zero issues, I hated the Hill start feature. __________________ GM 3.91/TrueTrac OEM ZL1 Rims, 6 Piston Brakes & Side Skirts.ACST4 Splitter/Deflectors NPP M2W,GM Short Throw,GPI Ported Rod Mod,BO White PTB,CAI/JRE Scoop, GC Aluminum DS,Stainless Works Ceramic LTH/HiFlo Cats, Hotckis 1" Springs & Chassis Max Brace BMR Adjustable Swaybars,Trailing Arms, Adjustable Toe Rod, LCA & Z28 UCA Bushings Hendrix Solid Cradle Bushings Pedders Radius Rod Inserts Strut tower brace, Moroso Catch Can,SCT X4 Dynosteve,Remote Clutch reservoir,Hero Smoked Tail and 3rd Brake Light, Diode Dynamic SL1 Fog Lights AeroForce Dual gauge/Autometer pillar mount.

11-21-2025, 12:46 PM	#157
camguynj Drives: '13 SS/RS LS3 BRM Cammed NPP Join Date: Jan 2013 Location: NJ Posts: 3,858 View My Garage	Ditto here! I wouldn’t have minded it so much if they put a red light in between the tach & speedo that lit up when HSA was engaged and stayed on until it was disengaged instead a brief msg on the DIC that left you guessing if the HSA was on if you missed seeing the msg.