2018 GMC Sierra 1500 Brake Caliper Torque Specs

The 2018 GMC Sierra 1500 has two different sets of caliper torque specs, depending on which brake package the truck was built with. On the standard JD9 brakes, the front caliper bracket bolts are 170 lb-ft (230 N·m). On trucks with the J95/J96 brake package they're 221 lb-ft (300 N·m). Check the brake code on your truck's option label before you torque anything. Wheel nuts are 140 lb-ft (190 N·m) either way.

Fastener	JD9 brakes	J95/J96 brakes
Front caliper bracket bolt	230 N·m (170 lb-ft)	300 N·m (221 lb-ft)
Front caliper guide pin bolt	100 N·m (74 lb-ft)	105 N·m (77 lb-ft)
Rear caliper bracket bolt	200 N·m (148 lb-ft)*	300 N·m (221 lb-ft)
Rear caliper guide pin bolt	52 N·m (38 lb-ft)*	105 N·m (77 lb-ft)
Wheel nuts	190 N·m (140 lb-ft)	190 N·m (140 lb-ft)

These values match across two published sources for the 2014-2018 GM light-duty truck platform: the TightTorque table for the 2014-2018 Silverado 1500, the Sierra's mechanical twin, and a technician's answer on JustAnswer for the 2016 Yukon, which shares the same brakes. The wheel nut torque is from the 2018 Sierra owner's manual, available in GMC's owner manual library.

*The rear JD9 values appear in only one of those sources. Treat every number here as a published reference and confirm it in GM service information (the factory manual, ACDelco TDS or a service-data subscription) for your VIN before torquing safety-critical fasteners.

Which Brake Package Does Your Truck Have?

GM identifies the brake system with a three-character RPO (Regular Production Option) code. It's printed on the Service Parts Identification label, which is usually in the glovebox. Look for:

• JD9: the standard brake system code, with the lower bracket bolt torque.
• J95 or J96: a different brake system with higher published torque values for the bracket and guide pin bolts.

If the label is missing or unreadable, a GM dealer can look up the RPO codes from the VIN.

Why you'll see 170 and 221 lb-ft quoted for the same truck

Both numbers are correct, just for different brake packages. Earlier versions of this page listed 170 lb-ft with a warning that some sources said 221 lb-ft. The RPO split explains the conflict: 170 lb-ft (230 N·m) is the JD9 front bracket spec, and 221 lb-ft (300 N·m) is the J95/J96 spec. Forum posts often quote 221 lb-ft and 77 lb-ft without saying which brakes the truck has, which is where the confusion comes from.

Be careful with lists for "Silverado brakes" in general. Values for the 2007-2013 trucks and for 2500/3500 HD models are different and turn up in the same search results.

Applying the Correct Torque

1. Confirm the RPO code and use the matching column above.
2. Clean the threads on the bolts and in the knuckle or axle bracket. Rust and old thread locker change how much clamping force a given torque produces.
3. Follow the service information on thread locker. Don't add oil or anti-seize to caliper bolt threads unless it's specified. Lubricated threads reach the torque value with more bolt stretch than GM designed for.
4. Install the caliper bracket first and torque both bracket bolts to spec. The front J95/J96 value of 221 lb-ft needs a torque wrench that reaches at least that high; a longer wrench also makes it easier to control.
5. Install the caliper on the bracket and torque the guide pin bolts. These are far lower than the bracket bolts, so switch to a smaller torque wrench if your large one isn't accurate at the low end of its range.
6. Mount the wheel and tighten the wheel nuts in a crisscross pattern to 140 lb-ft. GM's owner's manuals note that properly torqued wheel nuts help prevent brake pulsation.
7. Pump the brake pedal until it's firm before driving, then road test at low speed.

For the full pad and rotor job on the next-generation truck, see how to change brakes on a 2020 GMC Sierra. Its caliper specs are different from the 2018's.

Common Mistakes to Avoid

• Using the wrong brake-package column. A J95/J96 bracket bolt torqued to the JD9 value is under-tightened by about 50 lb-ft.
• Mixing up bracket bolts and guide pin bolts. Torquing a guide pin bolt to a bracket value can strip its threads or damage the caliper.
• Using an impact gun for final torque. Impacts can badly overshoot on both caliper bolts and wheel nuts. Run the bolts in, then finish with a torque wrench.
• Using a torque wrench outside its accurate range. Most click wrenches are least accurate near the bottom of their scale.
• Reusing damaged hardware. Replace bolts with stretched, rusted or damaged threads, and replace worn pad clips and guide pin boots.
• Letting the caliper hang on the brake hose while the bracket is off. Support it with wire.
• Forgetting the bleed. If you opened a hydraulic line, bleed the brakes before driving. See how to bleed GMC Sierra brakes.

Other Model Years

The same values are published for the whole 2014-2018 Silverado/Sierra 1500 generation, but confirm them for your RPO code. Other generations use different specs:

• 2019 and newer Sierra 1500: new brakes, some bolts use torque plus angle, plus an electric parking brake. See the 2020 Sierra brake guide.
• 2007 GMC Yukon (GMT900): see brake caliper torque specs for the 2007 GMC Yukon.

If you're diagnosing a caliper rather than just re-torquing it, GMC brake calipers: when to replace covers the symptoms.

Frequently Asked Questions

What is the torque for the front caliper bracket bolts on a 2018 Sierra 1500?

170 lb-ft (230 N·m) on trucks with JD9 brakes and 221 lb-ft (300 N·m) on trucks with the J95/J96 brake package. Check the RPO code on the Service Parts Identification label in the glovebox to see which applies.

What is the caliper guide pin (slide bolt) torque on a 2018 Sierra 1500?

Front: 74 lb-ft (100 N·m) with JD9 brakes, 77 lb-ft (105 N·m) with J95/J96. Rear: 38 lb-ft (52 N·m) with JD9, 77 lb-ft (105 N·m) with J95/J96. Confirm the rear JD9 value in service information, since only one published source lists it.

What is the lug nut torque on a 2018 GMC Sierra 1500?

140 lb-ft (190 N·m), according to the 2018 Sierra owner's manual. Tighten in a crisscross pattern with a torque wrench, not an impact gun.

Does a 2018 Sierra 1500 have rear disc brakes?

Yes. Both RPO brake packages above list rear caliper bracket and guide pin bolts, so both have rear discs.

Do I need thread locker on the caliper bolts?

Follow GM service information for your RPO code. Clean the threads and don't add oil or anti-seize unless it's specified, because lubricated threads change how much clamping force the torque value produces.