Which RPO code is for rear differential?

GM RPO Codes – Factory Identification Labels and Interpretation

RPO Code	Description	Ratio
GT8	Axle Rear (Dup of GT5)	4.10
GU1	Axle Rear	2.41
GU2	Axle Rear	2.73
GU3	Axle Rear	2.93

What are GM RPO codes?

A Regular Production Option (RPO) is a General Motors standard coding for vehicle configuration options and began in 1970. These codes are a combination of 3 alphanumeric characters and refer to a specific option or modification to the vehicle including the paint color.

What does RPO code Z88 mean?

Basically RPO Code “Z88” means just what Rammer posted.. That it is a GMC truck,RPO Code “X88” means that its a Chevrolet truck. This is for the guys on the assembly line as the truck is going through and being built,that way they know what emblems,grille,wheel centers and air bags go onto the truck.

What are my RPO codes?

Your vehicle’s RPO codes can be found on a sticker in the vehicle’s glove box or compartment.

How do I identify my GM rear differential?

Information about Differentials in GM vehicles can usually be obtained by looking at the RPO or “Regular Production Option” codes contained in the Service Parts Identification tag in the glovebox. Whenever possible, reference the tag numbers when ordering parts for your Differential.

What rear differential do I have?

Stamped Number on the Axle To figure out exactly what axle you have, you can look for the Dana stamped bill of materials number. This stamped number can usually be found on the righthand side or on the longer axletube on the same side of the tube as the differential cover, facing the rear of the truck.

Where is the RPO code on GMC truck?

The RPO Codes can be found on a placard labeled “Service Parts Identification” in the glove box, on the trunk floor or inside the driver’s door panel.

How do I know if my 2015 Silverado has a tow package?

Look for RPO code NHT inside the glove box. If it’s a new truck, it will have ‘Max Trailering Package’ listed under options on the window sticker.

What does X88 mean?

Yes, X88 = Chevrolet while Z88 = GMC.

What gear ratio does my 2015 Silverado have?

Its 7.0 overall gear ratio spread is wider than GM’s six-speed automatic transmissions. That provides a numerically higher first gear ratio, helping drivers start off more confidently with a heavy load or when trailering.

How do I find my GMC axle ratio?

To find the axle gear ratio of any GM vehicle, locate the RPO sticker (typically located in the glove box) and write down any codes starting with F, G, or H.

What rear diff do I have?

How do you find out what differential I have?

Differential Identification using Tags & Stampings The most accurate differential identification is provided by the bottom line of the tag number or axle tube stamp. Differential tags can easily be used to identify Dana and Ford differentials.

How do I identify my GM differential?

Where is the RPO code on a Chevy engine?

Back in the 1970s when GM first came out with RPO codes for their vehicles, they placed these codes in a laminated packet in the backend of their automobiles. Now, however, you’ll likely find the RPO codes located on a sticker in the glovebox of your donor vehicle.

What’s new in the 2015 GMC Yukon XL?

GM redesigned its family of full-size SUVs for the 2015 model year, giving them a stronger frame, new V-8 engines, boxier exterior styling and richer interiors (to see the 2015 and 2014 Yukon XL compared, click here ).

Why buy a 2015 GMC Sierra 1500?

With its confident stance, big-rig persona and a somewhat pretentious aura inside and out, the 2015 GMC Sierra 1500 perfectly accommodates today’s movers and shakers, with capable moves … and virtually no shaking.

What kind of engine does the 2015 GMC Sierra 2500 have?

Completely redesigned, the 2015 GMC Sierra 2500HD features more rugged styling, an array of ergonomic refinements and three powerful V-8 engine choices. The tough GMC Sierra 2500HD enters 2015 with a wide array of cab and bed options and several engines to choose from, with plenty of upgrades to make even the pickiest of shoppers happy.

Is the 2015 GMC Sierra 1500 Rodeo Drive better than Ford?

Our 2015 GMC Sierra 1500 trim comparison will help you decide. While Chevy and Ford trucks are ubiquitous at any regional rodeo, General Motors’ GMC lineup better recalls Rodeo Drive.