NHTSA ID Number: 10115093
Manufacturer Communication Number: PIP5339
Summary
This Preliminary Information communication provides information to the technician about a customer?s request to remove or disable the Bi-Fuel Compressed Natural Gas system. General Motors
does not condone the removal of the original equipped Compressed Natural Gas systems.
Condition/Concern
A dealer may receive a customer request to remove or disable the Bi-Fuel CNG (Compressed Natural Gas) system.
Recommendation/Instructions
General Motors does not condone the removal of the original equipped CNG systems.
The New Vehicle Limited Warranty does not cover damage caused as the result of any of the following:
Damage Due to Accidents, Misuse, or Alterations: Alteration, modification or tampering to the vehicle including, but not limited to the body, chassis, powertrain, driveline, or components – after final assembly by GM. Service Agents modifying new vehicles and installing equipment, parts, and accessories obtained from sources not authorized by GM are responsible for complying with the regulations set forth by the National Highway Traffic Safety Administration and the US Federal Motor Vehicle Safety Standards.
GMTAC (GM Technical Assistance) will not have or supply information on how to remove or disable a CNG system.
GMTAC does not have specifications or information on how the vehicle will perform when the CNG fuel system is removed.
GM Technical Assistance will continue to supply information on how to diagnose and repair a properly installed original equipment system.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
85 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | CAVALIER | 1998-2004 |
| CHEVROLET | EXPRESS | 1998-2005 |
| CHEVROLET | G SERIES | 2000 |
| CHEVROLET | IMPALA | 2015-2016 |
| CHEVROLET | P | 1998-1999 |
| CHEVROLET | SILVERADO 1500 | 2006-2007, 2009-2011, 2014 |
| CHEVROLET | SILVERADO 1500 HD | 2002-2005 |
| CHEVROLET | SILVERADO 2500 | 2006-2007, 2009-2016 |
| CHEVROLET | SILVERADO 2500 HD | 2001-2004 |
| CHEVROLET | SILVERADO 3500 | 2013 |
| CHEVROLET | SILVERADO 3500 HD | 2001 |
| GMC | G SERIES | 2003 |
| GMC | G VAN BUS | 2000, 2004-2006 |
| GMC | GM | 2001-2002 |
| GMC | P | 1998-1999 |
| GMC | SAVANA | 1998-2005 |
| GMC | SIERRA 1500 | 2014 |
| GMC | SIERRA 2500 | 2007-2016 |
| GMC | SIERRA 2500 HD | 2004-2005 |
| GMC | SIERRA DENALI | 2007-2013, 2015-2016 |
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5339
Date: Nov-2015
- FORKLIFT READY: This tank features a LIQUID DRAW design for use in forklift applications; it can be mounted horizontally or vertically and comes with a built-in gauge so you never run out of propane!
- RUGGED-DESIGNED to withstand the rigors of warehouse transportation and constructed from high-grade welded steel and powder coated for long-lasting durability; arrives in a shiny and smooth finish, making it rust-free and corrosion-resistant
- EMPTY TANK: This propane tank is EMPTY and comes pre-purged and ready to be filled with gas
- SAFETY FIRST - Flame King tanks are pre-purged, vacuum-ready for filling with Propane/LP gas; they are x-ray and hydrostatic tested and Department of Transportation (DOT) and Transport Canada (TC) certified
- LEADING THE INDUSTRY - Flame King, a leader in propane storage solutions, prides itself in making the highest quality, premium, refillable propane tanks in the market; from 0.25LB up to 420LB tanks, we've got you covered!
- Universal Compatilbility: Standard CGA 600 RH connection fits most portable torches, camping stoves, and heaters. Perfect for quick swaps in the field, on the job site, or at home.
- Portable & Lightweight: The slim 14 oz design is ideal for tight crawlspaces or packing for camping. Delivers pro-grade heat performance without the heavy bulk of larger propane tanks.
- Rugged Durability: Impact-resistant steel construction ensures secure, leak-free operation. Built to survive the job site and the outdoors so your fuel is ready whenever you are.
- Clean-Burning Performance: Optimized for high-heat tasks like soldering, brazing, and cooking. The preferred choice for contractors, DIYers, and outdoor enthusiasts needing reliable fuel.
- Allows removal of the empty cylinder for refill without interrupting propane supply; includes 2 of the 18-inch pigtails to connect the regulator to the propane tank or propane supply
- For RVs with dual propane tanks; it automatically switches from primary to reserve tank when the primary tank is empty
- UL Listed Regulator, inlets are 1/4" SAE inverted flare and the outlet is 3/8" NPT female pipe thread; rated for 345,200 BTU
- Pairs well with our 48-inch thermoplastic hose; regulator is factory set at 11WC (water column)
- Double-stage design maintains constant gas pressure under changing demand and conditions
- ACME nut x 1/4" male NPT
- Rated for 200, 000 BTU/hr
- Connect a 20lb or 30lb propane tank to your regulator/hose assembly
- Excess flow protection
- Thermal shut-off protection
- High Grade Material: This car propane tank gauge is crafted from brass, ensuring robust construction and high pressure resistance. It effortlessly withstands various external impacts during daily use and is highly durable. It also offers excellent corrosion and rust resistance, maintaining stable performance across different operating conditions to extend product lifespan and provide reliable support for propane tank pressure monitoring.
- Vast Compatibility: This car propane tank pressure gauge is compatible with 5-40 psi propane tanks featuring QCC1/Type 1 connectors, fitting most RVs, campers, etc. Besides, it can be used with common automotive travel equipment like BBQ grills, camping stoves, heaters, and fire pit tables. Whether for long-distance travel or outdoor camping, it meets propane tank pressure monitoring needs, providing convenient assurance for automotive outdoor living.
- Smooth Installation: This car propane tank pressure gauge features simple, tool-free installation requiring no complex steps. Secure it by hand-tightening clockwise until firmly locked. Once installed, monitor propane supply status instantly without removing the tank—pressure readings display immediately. User-friendly operation requires no expertise for effortless daily use.
- Night Visible Gauge: This car propane tank pressure gauge features a luminous pressure indicator, enabling clear observation of propane flow even in low-light nighttime conditions. It provides instant visibility of the tank's operational status during nighttime use, preventing inaccurate pressure readings due to impaired night vision. This offers clear monitoring support for propane usage in nighttime outdoor camping, RV parking, and similar scenarios.
- Color-Coded Dial: Featuring a color-coded dial design, this car propane tank pressure gauge allows real-time fuel level monitoring without removing the tank. Propane status—full, low, or needing refill—is instantly visible. Quickly assess remaining propane without complex interpretation, helping you plan refueling times and meet diverse outdoor automotive needs.
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SEOCONTENT-START
Bulletin No.: PIP5339
Date: Nov-2015
Subject: Disabling Or Removing CNG (Compressed Natural Gas) Fuel Systems Models: 1998-2004 Chevrolet Cavalier
1998-2005 Chevrolet Express
1998-2005 GMC Savana
1998-2016 Chevrolet Silverado
1998-2016 GMC Sierra
2015-2016 Chevrolet Impala Equipped with Bi-Fuel CNG System
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
A dealer may receive a customer request to remove or disable the Bi-Fuel CNG (Compressed Natural Gas) system. Recommendation/Instructions
General Motors does not condone the removal of the original equipped CNG systems.
The New Vehicle Limited Warranty does not cover damage caused as the result of any of the following:
Damage Due to Accidents, Misuse, or Alterations: Alteration, modification or tampering to the vehicle including, but not limited to the body, chassis, powertrain, driveline, or components – after final assembly by GM. Service Agents modifying new vehicles and installing equipment, parts, and accessories obtained from sources not authorized by GM are responsible for complying with the regulations set forth by the National Highway Traffic Safety Administration and the US Federal Motor Vehicle Safety Standards.
GMTAC (GM Technical Assistance) will not have or supply information on how to remove or disable a CNG system. GMTAC does not have specifications or information on how the vehicle will perform when the CNG fuel system is removed.
GM Technical Assistance will continue to supply information on how to diagnose and repair a properly installed original equipment system.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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SEOCONTENT-END
I am looking to remove the cng tank located in the box of the Silverado 2500 we have purchased to make room for a slat spreader to go in the box for plowing when I try to disconnect everything it throws check engine light and I was wondering what if any steps are there to removing the system
I’m not sure what’s involved in removing CNG System. As far as I know it uses a different PCM. You can try a PCM from a none CGN Truck, maybe that will work.