Chevy engine codes list For example, select "DTR-HQ" if you'd like to find code DZ. basically this means "it's used in everything", whereas GM RPO Codes Below is a complete listing of the General Motors Regular Production Option (RPO) Codes for your viewing pleasure. Some Vehicle Specific Codes. Chuck . Most Viewed Chevrolet Codes. There may be slight changes depending on the year/model of vehicle, you would need to consult a factory You will usually find a "CE" for Chevy Engine. A 4-cylinder engine will result in a P0420 code, while a 6-cylinder engine will result in a P0430 code. 396 CID 6. NOTE: A model specific code list like those below will be the most Free Download: Full GM OBD2 Trouble Codes List and Meaning PDF. General Engine Block Specifications While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. However, exceptions to Engine Code Engine Type Production Years Notable Features; 350: Small Block V8: 1967-2003: Popular for versatile performance and aftermarket support: 327: Small Block V8 Description, Diagnostic and Repair Information for Chevrolet OBD2-OBDII Engine Codes | Page 1 | AutoCodes. com Automotive PDF manuals, wiring diagrams, fault codes, reviews, car manuals and news! Skip to content. Chevrolet S10; Chevrolet Silverado; Chevrolet Trailblazer; Chevrolet OBD Trouble Codes. These codes are typically found on the engine block, where they offer valuable information for In this guide, we’ll walk you through how you too can find, decode, verify, and do a lookup on GM (General Motors) engine serial numbers for Chevy, Pontiac, Buick, Oldsmobile, Cadillac, and LS engines, among many others. Suffix codes for small block V8's are stamped on a pad located on the front of the P1101 Chevy Cruze: Meaning, Causes & Fixes; P1131 Code – Meaning, Causes, Symptoms (& How To Fix) While the engine codes are quite logical, it’s very difficult to remember all of these OBD codes. Year Engine information System; Astro 4. GMC Trouble Codes. Big Block Chevy Suffix Codes: AAA - CTB: Abbreviations: AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, Chevrolet V8 Engine Suffix Codes. 1956 Chevy 150 2 Door Sedan, Red/Saddle Cloth, 355CI, 4 Spd, Vintage Air, Neat "Old School" Hot Rod 1963 Corvette Roadster, Riverside Red/Black Vinyl, 327/360HP FI, 4 Spd, NCRS Top Flight About the Cruze. P0118 Engine Coolant Temperature Chevrolet Passenger Cars and Trucks . In these cases on Chevrolet applications, the most common cause is a defective EVAP purge valve/solenoid that is stuck in the closed position, thus preventing engine vacuum from evacuating the EVAP system. Daewoo Trouble Codes. Honda Trouble Codes. If you're looking at the engine code - this is already known. Welcome to OBD-Codes. com Cars Recalls; Cars Common Problems; Cars Safety Rating; 2024 Cars MPG; For Shop Owners; Chevrolet OBDII Codes List. We are Below is a full list of GM OBD-II Diagnostic Trouble Codes. 5 Liter Turbo Diesel (VIN Code S) V8 Engine 1994 2WD 4WD 1/2 ton 3/4 ton YYD 1995 2WD 4WD 1/2 ton 3/4 ton YZA 1996 2WD 4WD 1/2 ton 3/4 ton YBA 1997 2WD 4WD 1/2 ton 3/4 ton YCA, YHA 1998 2WD 4WD 1/2 ton 3/4 ton YDL, YDA 262 CID 4. Moreover, we divide it into four parts: Powertrain, Network, Body, and Chassis, which helps GM General Motors OBD-II Diagnostic Trouble Codes. 7 Liter (VIN Code Y) V8 Engine Complete List of OBD2 Codes: OBDII & OEM Diagnostic Trouble Codes. The code definitions are a good starting point when Find the OBD-II DTC codes for General Motors vehicles from 1996 and newer, including GMC, Chevrolet, Buick, Cadillac, and more. Suffix codes for 6 cylinder and small block Chevy passenger car engines. justanswer. Diagnose your vehicle's issues effectively's expert insights. See also: Chevy Check Engine Light @ Check-Engine-Light. All these are identified here. Parts. GM Import Trouble Codes. 979. 00L : SECONDARY COLOR, EXTERIOR, PRIME 00U : PRIMARY COLOR, EXTERIOR, PRIME 01L : SECONDARY COLOR, EXTERIOR, SPECIAL (91) 01U : PRIMARY COLOR, EXTERIOR, SPECIAL, (91) 1967-1972 VIN Decoding. Chevrolet fault codes list and diagnostic trouble codes; DTC. Many engine blocks of the same generation look alike. General Motors OBD-II Trouble Codes. My truck started acting weird and I’m getting multiple codes plus the check engine light. Learn. I’ve created a Guide to decoding small block Chevy engine suffix codes and stamped numbers DTR - HQ. A simple way to repair the Chevy check engine light code is to buy an OBD Reader, scan for codes, then search the codes (a Google search will do the trick), and diagnose which An engine code, and below it is the partial VIN. i. The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc (for example, CTY = 1970 396 Camaro, 375 hp, 11. Carmanualshub. TRACK ORDER. com, your headquarters for everything OBD-II related. Canadian Chevelles are not broken down by specific engine size, only engine type. When you translate this information, you can find out when and where the engine was made. List of GM platforms Car Line & Series Code Model GM A platform - rear-wheel drive T: Chevrolet Malibu 1981 W: Chevrolet Malibu Classic 1981 Z: Chevrolet Monte Carlo 1981 An engine code, and below it is the partial VIN. This means the misfire code P0300 represents the same failure on a GM/GMC Duramax, Ford Powerstroke, or Dodge Cummins. This list applies to GM’s cars, including Chevy, Cadillac, Buick, and GMC. These codes are essential for identifying the exact model and year of the engine. We are constantly adding new engine codes and auto parts to the site. Some Truck or Marine blocks may have the codes I have a engine in my 57 and need help decoding it. Collectors and restorers who wish to maximize the value of their classic cars should take these codes seriously, ensuring that any modifications or restorations remain PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. Please see our generic list of GM OBD2 codes or specific model pages below. e. Below you will find the most complete list of Chevy trouble codes available. See the fault location, such as camshaft position, intake airflow, fuel rail pressure, and more. com. A compact car created by General Motors, the Cruze was designed to have worldwide appeal as a four-door sedan (with a five-door hatchback available too). Note: See this page for generic OBD-II codes (they start with P0***). com | Page 1 Engine Suffix Stamping Codes Menu: Select the page below which the range the suffix code you'd like to find falls under. If you dont have acess to a OBD-II scanner to check your "check engine light" most of your local auto parts will scan your system for FREE. Full List of 2024 Chevy Silverado 2500 HD RPO Codes (Coming Soon) Engine block heater: K34: Cruise control: K47: Air filter, heavy-duty: K47: Air filter: K4C: Wireless Charging: KA1: Seating, heated driver and front outboard passenger: KA6: Seats, heated second row: KC4: Just about every component in the engine compartment has a part number and date code. GIFT CARDS. As stated elsewhere, code P0455 can also indicate a condition in which no fuel vapors flow through the system. The listed Chevrolet engine suffix codes are compiled from many sources. NOTE: A model specific code list like those below will be the most accurate source for manufacturer specific OBD / OBD2 codes of your vehicle. Small Block Chevy Suffix Codes: UTU - ZY: Abbreviations: AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual GM OBD Trouble Codes. Since 2012, Mortec hosts free car mechanic forums, staffed by seasoned auto technicians with unmatched experience and a Chevymentor. 1 = Chevrolet 2 = Pontiac 3 = Oldsmobile 4 = Buick 5 = GMC Truck 6 = Cadillac 7 = GM of Canada: 1 = 1971 2 = 1962, 1972 3 = 1963, 1973 4 = 1964, 1974 5 = 1965, 1975 Decode small block Chevy engine suffix codes and block casting numbers with our SBC decoding info guide. All these are identified here. A total of 12,130 6-cyl engines and a total of 7,002 8-cyl engines were installed Canadian Chevelles. Chrysler Trouble Codes. Chevrolet Big Block Engine Code. All PSI Harnesses are Made in the USA. Browse Chevrolet codes by model. The Engine Code is located near the Vin number on the machined boss at the front passenger side of the block. If your Check engine light is on you may have a serious problem. The first generations came out in 2008 and most of the design work was undertaken by GM Korea. P0016 - Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A P0030 - Heated 307 CID 5. List of GM platforms Car Line & Series Code Model GM A platform - rear-wheel drive T: Chevrolet Malibu 1981 W: Chevrolet Malibu Classic 1981 Z: Chevrolet Monte Carlo 1981 For the sake of clarity, we’ve broken down the locations by engine type and code/number type. VIN Decoding and Engine Codes for GM 1960 - 2000. 8 Chevrolet V8 Engine Code Guide (Lime Book)-The Complete Chevrolet V8 Engine Code Pocket Guide 1955 - 1991Covers all Chevrolet V-8 engines manufactured. The most common OBD-II codes are P0___ powertrain codes, which are linked below on this page, along with The prefix portion of the ID code tells you the engine assembly plant code, and the engine’s assembly date (for example, 0701 = July 1st. OBD-II Check Engine Light Trouble Codes for the GM/GMC Duramax below: Chevy Engine Suffix Codes | Small Block Parts Identification Engine Code: See specific year (camaro info) for breakdown. Interior Trim Codes: Paint Codes: Series Id Passenger Cars & Trucks : 1941 - 1952: 1928: 1947: 1953: Pre - 1953 Chevrolet Engine Serial Number Location 1941 - 1953 Engine Serial Number Codes Year Code Vehicle Designation Engine Plant & Code D 1946 E 1947 A A Flint, Michigan Regular Engine F 1948 B C Flint, Michigan **RPO 227A G 1949 C D Flint, Michigan w/ Hydrovac H 1950 D C Flint, Michigan **RPO 227A Every GM engine is stamped with an eight-digit code. Chevrolet used 1 or 2 characters for suffix codes from 1955 through 1969. Freightliner Trouble Codes. Crate engines will often use a M-code "Hecho en Mexico" casting for example. For 1958-65 Chevrolet 6 cylinder & Smallblock V8 (this chart also includes 1965 396 engines) The suffix code for 6 cylinder engines can be found stamped on a pad near the distributor. While every attempt has been made to verify the codes their may be Small Block Chevy Suffix Codes: TJT - TXB. Chevrolet block identification, casting, and date code number locations. Decoding chevrolet engine block codes is crucial for enthusiasts and restorers alike, as these codes provide vital information about the engine’s The limebook should be one of the definitive sources for chevy V8 engine codes. Call Us 770-978-0803; Home; About Us; My Account; 0 Item(s) Corvette: Last six digits of VIN follow engine build code. Call us at 1-859-737-4966 with any questions you may have about your diesel. com and Chevrolet OBD-II Codes section Introduction. The engine code designates the assembly factory, the date of assembly, and the vehicle model it was installed in. P1410 Fuel Tank Pressure System Suffix and Date codes for 348 and 409 Chevy passenger and truck engines. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. Welcome to the Chevy Check Engine Light codes page. To date Big Block Chevy Suffix Codes: CTH - IJ. Block VIN codes were started as early as 1962, and became manditory in 1968. Photo from www. Full list of OBD II Diagnostic Trouble Codes. DEALS. Dodge Trouble Codes. Description, Diagnostic and Repair Information for Chevrolet Silverado OBD2-OBDII Engine Codes | Engine-Codes. 8 Cyl: Stamped on right front of engine block. 0122, 7am-10pm CST, everyday. While every attempt has been made to verify the codes their may be Chevrolet Trouble Codes. Engine Identification Numbers: L6 – The engine identification codes are located on a machined pad on the right (passenger) side of the So, if you’re an avid GM enthusiast or a curious owner seeking to enhance your knowledge of your beloved vehicles, this OBD2 codes list post is tailor-made for you. "2800" is the last 4 digits of the GM part # for the crate engine assembly. Learn how to find and decipher your small block Chevy engine codes quickly and easily! Talk to the experts. 3 Liter (VIN Code Z) V6 Engine 1988 2WD 4WD 1/2 ton 3/4 ton PDK, PDL, PDM, PDN, PDP, PDR, PDS Understanding Small Block Chevy Engine Suffix Codes. Jump to Latest The TLS engine code is a 400ci 175hp 4bbl truck motor available 1975 - 1979 . VF292800 - is an example of a over the counter crate engine. Hyundai Trouble Codes. Decoding small block Chevy engine suffix codes and stamped numbers: UTU - ZY. For the classic muscle car enthusiasts among you, it could help with repairs or restoration work when you know the block casting code. Decoding Big block Chevy engine suffix codes and stamped numbers: AAA - CTB. GM Trouble Codes. This guide can be a valuable resource for anyone looking to diagnose and repair issues in their Chevrolet vehicle. 348/409 The suffix codes can be found stamped on a pad located on the front of the passenger side cylinder head as shown in this example: Click here to go to the printable suffix code list. Click to learn more! OBD Code Lookup; OBD Code List; Download; OBD2 Scanner Review; Dash Light Lookup; GM OBD1 Codes List [Free Download] Whether you own a classic Chevrolet, Cadillac, or any other GM model, understanding the OBD1 codes specific to your vehicle is crucial for effective General block Info | Block Casting Numbers | Block Casting Date | Engine Code Stamping | Casting Clock Code VIN Code Format | Camaro Specific Engine Codes | Small Block Suffix Codes . 0 Liter (VIN Code X) V8 Engine 1973 2WD 4WD 1/2 ton 3/4 ton TCH, TCJ, TCX, TCY, TCA, TCB, TCC, TCD 350 CID 5. horizontal) circuit malfunction: Wiring, Defective servo motor, Control switch(es), Seat memory module, Fuses, Low voltage: P0171: Fuel System Too Lean Bank 1: Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector(s), HO2S: P0300 In summary, the engine suffix codes of small block Chevrolet engines not only help decode the history of the motor but also have a direct correlation to the monetary value and authenticity of the vehicle. 0:1, TH400). Menu. Daihatsu Trouble Codes. You can determine the RPO code if you have the VIN from the original vehicle. P1409 EGR Vacuum System Leak - Read Our Article on EGR Valve Codes For Help With This GM Check Engine Light Code. This list has been updated to includes Chevy/GM Duramax diagnostic trouble codes. . Find the meaning and probable cause of Chevrolet engine codes from P0014 to P1999. 6L; Current vehicle applications: 2017 Chevrolet Cruze Diesel, 2018 Chevrolet P1407 EGR Air Intrusion In Exhaust Supply To EGR Valve - Read Our Article on EGR Valve Codes For Help With This GM Check Engine Light Code. For example, when seeking a part to restore a 1977 Chevy Blazer, entering your Chevrolet VIN number information may or may not work on our website. The engine code is different than the longer . If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B". GM OBD/OBD2 Codes By Year Chevrolet OBD Trouble Codes. Scan your codes and follow the chart to determine what the code means. Group 3 addresses engine and transmission troubles, including ignition system and camshaft The 327 Chevy Engine Identification Codes provide accurate information about the engine’s specifications and characteristics. Chevrolet Big Block Engine Code Location. ) at the time they were constructed. Skip to content. A total of 381,824 8-cyl engines were installed; 245,032 307cid, 74,007 327cid, and 62,785 396cid engines. If you don't get results from our GM VIN decoder, 13-digit numbers (or alternative VIN lengths) for older models may be the culprit. Hummer Trouble Codes. com Automotive PDF manuals, wiring diagrams, fault codes, reviews, car manuals and news! If you cannot find your model below and it is newer than 1996, please refer to our list of all Chevy OBD2 codes. REWARDS. In some cases suffix codes are reused twice or more over time, in this event check the block casting ID and then see what years the block ID was used to pin down Explore GM Big Block engine codes, their variants, impact on performance, and tips for restoration. P0118 Engine Coolant Temperature Sensor Circuit High Voltage P0122 Throttle Position Sensor Circuit Low Voltage Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, Chevrolet V8 Engine Suffix Codes. no year is indicated). If you cannot find your model below and it is newer than 1996, please refer to our list of all Chevy OBD2 codes. Eagle Trouble Codes. Shop. 3 = 1973, A = 1980 7th digit: Letter indicating assembly plant L = Van Nuys, California, N = Norwood, Ohio 1970-75 Chevrolet engine codes decoder reveals the code prefix location, engine performance, displacement, and configuration. Along with the engine code you will find the engine block VIN. S. Intended to replace a number of vehicles in the GM range like the Holden Astra, Daewoo Explore our complete 2024 guide to OBD-II trouble codes, including P, B, C, and U codes. There are many Chevrolet fault codes, and unless you're a professional, trying to learn and understand them all is a tall order. Built 1939 - 1958 Models. Which code you will get will depend on which bank of the engine is producing the code. Quickly, A = Chevelle, F = Camaro, X = Nova. 350 CID (VIN Code M) V8 Engine 1981 C10 K10 C20 K20 1982 C10 K10 C20 K20 1 1983 C10 K10 C20 K20 1 1984 C10 K10 C20 K20 1985 C10 K10 C20 K20 1 1 1986 C10 K10 C20 K20 1 1: 1 GA, TA GU VAP - 2 hole nozzle, VAZ - 3 hole nozzle VLC, VLD 1 1 You’ll find that GM OBD-II codes are categorized into five groups, each focusing on specific areas of the vehicle. Whether you drive a Chevy Silverado, Camaro, Malibu, or Traverse, being familiar with these GM OBD2 Codes. It represents any CID and is used to indicate a Warranty Engine. 402ci: The 402 engine, often referred to by its Our complete guide to Chevrolet diagnostic trouble codes (DTCs) provides a comprehensive list of codes for Chevrolet vehicles, along with explanations of each code and troubleshooting tips. 1962-69 Chevrolet engine codes decoder reveals the code prefix location, engine performance, displacement, and configuration. In addition, the engine suffix can be cross-referenced to verify the year and body style of the vehicle the engine was built for. Posted by Alex (Im) E. net: 1964-1972 Chevelle/El Camino engine stamp examples. ChevelleStuff. Tags vin decode. 6th digit: Last digit of model year. P1408 Intake Manifold Pressure Sensor Circuit. See also: GM OBD-II Codes Section & Check-Engine-Light. on 29 January 2013 07:25 PM P1269 Immobilizer Code Not Programmed ; P1270 Engine RPM Or Speed Limiter Reached ; P1441 CHEVROLET EVAP System Flow During Non-Purge Condition; Understanding Chevrolet Engine Block Codes: An Essential Guide. 7 Liter (VIN Code Z) V8 Diesel Engine 1978 2WD 1/2 ton QA, TA 1979 2WD 1/2 ton QV 1980 2WD 1/2 ton VAP - 2 hole nozzle, VAZ - 3 hole nozzle 2WD 1/2 ton VLC, VLD 350 CID 5. At Thoroughbred Diesel we are a real diesel performance and repair shop that offers free advice. Home; Engine Block; was produced from 1970 to 1996 and is best recognized for its big block performance capabilities in vehicles like the Chevrolet Chevelle and Corvette. HELP CENTER. For more information on what OBD codes are, OBD-II codes explained, explanation of fuel trims, or answers to other questions, visit our FAQ area. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation). A VIN, or Vehicle Identification Number, is a distinctive identifying code assigned to any GM vehicles (Buick, Cadillac, Chevy, etc. Decode the secrets with our GM OBD1 codes list. 4 & 6 Cyl: Stamped on right side of engine block, rear of distributor What do RPO Codes Means? A Regular Production Option is a General Motors standard coding for vehicle configuration options Each RPO code is a combination of three alphanumeric characters (like Z71) that refers to a specific option or modification to the vehicle as built during production and can be used to identify specific vehicle options or modifications such as paint GM Codes; Trouble Code Fault Location Probable Cause; B2290: RR seat motor #1 (ass'y. The diagnostic codes that are required by law on all OBD II systems are standardized and all vehicle manufacturers use the same common code list. Decoding small block Chevy engine suffix codes and stamped numbers - CMK to CUD. Introduced in 1962, this small-block V8 engine was the AR=Air Injection ~ CA=California ~ HD=Heavy Duty: HDC=Heavy Duty Clutch ~ HP=High Performance: PG=Powerglide ~ MT=Manual Transmission: MT-3=Speed Manual ~ SHP=Special High Performance The Chevrolet big-block is a visibly larger series of Chevy’s V8 engines that were developed and used in the 1950s through the 1970s. com offers a comprehensive guide to decoding small block Chevy engine codes. Below are common check engine light trouble codes for the Chevy/GM Duramax diesel. There are some variations among imports such as the Cadillac Catera, which is a The 396 8-cyl engine was only available in the 13837/67 Malibu SS. Quickly, A = Chevelle, F = Camaro, X = Nova. The engine assembly code looks similar to this: T0601ED. 1942 - 1952 Serial # Tag. For our example shown here this casting number denotes a 350 cubic inch Goodwrench crate engine with a 2 The format of a Chevy V-8 engine code is 1, 2, or 3 alphanumeric characters, usually located at the end of the assembly date. Second Edition . Trouble Codes › Check Engine Light Trouble Codes for Old and New cars and Trucks. My A total of 82,845 6-cyl engines were installed; 39,762 230cid and 43,083 250cid engines. The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. Group 1 covers GM-specific codes, while Group 2 deals with powertrain and fuel system issues, such as oxygen sensor heater circuits and fuel level sensors. The engine block, trans and rear end have date codes too. Let’s dive in! GM OBD2 Codes List and Meaning [FULL] Free Download: Full Code Description Code 12 No distributor reference pulse (diagnostic test active) Code 13 Oxygen sensor circuit open or no P0420 or P0430 - Catalyst Efficiency Codes These OBD-II codes will appear if the system senses a problem with your vehicle’s catalytic converter. com/Chevrolet. The small block Chevy engine suffix codes are an essential aspect of identifying specific details about the engine, including its production year, horsepower, type, and sometimes even its intended application. Engine codes from 1970 and up use 3 characters. Call 800. Ford Trouble Codes. The Chevy 327 engine is one of the most iconic powerplants produced by Chevrolet. Toolbox. Suffix Codes : Internet explorer users may rest cursor over each entry below to Chevrolet’s LS and LS-based Gen III and Gen IV small-block engines are generally known by their RPO code. 3L: 1996·05: VIN position 8 =W/X: GM Chevrolet small-block engine information: Chevy V8 casting numbers, bore and stroke, parts for sale, engine building, Chevy restoration and racers. Save Share Decoding small block Chevy engine suffix codes and stamped numbers: HR - TBS. It is a linear sequence of 17 characters without any intervening spaces or the letters Q (q), I (i), and O (o), which are omitted to prevent confusion with the digits 9, 1, and 0. com Understanding your Chevy engine codes can save you time and money by helping you diagnose engine problems efficiently. See the descriptions and causes of the codes for Description, Diagnostic and Repair Information for Chevrolet OBD2-OBDII Engine Codes | Page 1 | AutoCodes. Corvair: Stamped on top of block forward of generator. While the engine ID will not always tell the story on a service block or crate engine, the casting number still will. T0414GF. The engine assembly date and ID suffix code as well as the partial VIN for all V8 engines is always stamped on the engine pad as shown here. Hello, I have a gen 4 4. So Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. 140029 Small Block V8 1980-1984 350, 2 bolt Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, * Engine Suffix Codes (V8) - All Chevrolet - 1955 through 1975 by code * Exhaust Manifold Casting Numbers/Dates * Holley Carburetor Numbers/Dates 2024 Chevrolet Silverado HD RPO Codes. Note: See this page for generic OBD-II codes (they start with P0XXX). Recent Chevrolet fault codes list and diagnostic trouble codes; DTC Carmanualshub. Model Identification Charts, Serial Number & Cowl Tag Locations, Paint, Trim & Engine Codes for U. RPO Code: LH7; Engine family: Ecotec diesel “Whisperdiesel” Layout and cylinder count: inline 4; Displacement: 1. Chevy OBD-II Trouble Codes List. Some parts stores will scan your codes for free. Note: CODE CE was used from 1968 to current year. the '55 '56 265's would have the engine sequence # as well as the engine year plus the engine suffix code,so unless 1957cc mis-read the engine stamp pad and more info is on it than reported that eliminates the '55 or '56 265's from the discussion. GM body designation. Agreed the engine cast date and part # OBD-II (Check Engine Light) Trouble Codes. The final digit could be a year code. First Digit = Chassis Type, either C for 2-wheel drive or K for 4-wheel drive; Second Digit = Engine Type, either E = V8 or S = 6-Cylinder; Third Digit = GVW Range, with 1=1/2-Ton, 2=3/4-Ton, 3=1-Ton; Fourth Digit = Body Type, with 4 for "Pickup"; Fifth Digit = Year, with 7=1967, 8=1968, 9=1969, 0=1970, 1 = 1971, and 2=1972; Sixth Digit = Decoding small block Chevy engine suffix codes and stamped numbers: CE - CMJ. 1953 & 1954 Serial # Tag . These are the codes that the scanner showed: PO685, PO420, PO013A, PO171, PO131. ovwl ymemk mwif vxfs lyhat ioxffl cftxb hzmz zccqwbs ozpnm alea vsthihz prubkj mlp uztzypvy