Loading...

Pontiac Bonneville A/C Suction and Liquid Line Hose Assemblys

Pontiac Bonneville A/c suction and liquid line hose assemblys

Starting at $125.95, AutoBuffy stocks 3 A/C suction and liquid line hose assemblies from UAC and GPD. This assembly carries refrigerant between the compressor, condenser, and evaporator — the suction line moves low-pressure vapor back to the compressor while the liquid line carries high-pressure liquid refrigerant. A cracked or leaking hose causes refrigerant loss, compressor damage, and a completely inoperative A/C system.

Signs your Pontiac Bonneville needs a new A/C suction and liquid line hose assembly

  • A/C blows warm or ambient-temperature air even after the system is given time to cool down
  • Visible oily residue or staining along the hose routing, fittings, or at connection points — refrigerant oil leaks with the refrigerant and leaves a greasy film
  • A/C system repeatedly loses its charge shortly after a professional recharge, indicating an active leak rather than normal slow depletion
  • Audible hissing near the firewall, engine bay, or along the hose run when the A/C is running
  • Frost or ice buildup on the suction line itself, which can signal a restriction inside the hose or a pressure imbalance caused by a partial blockage
  • Compressor cycling on and off rapidly or not engaging at all, triggered by the low-pressure safety switch detecting insufficient refrigerant pressure

Which A/C suction and liquid line hose assembly should you buy for your Pontiac Bonneville?

For this part, the primary decision is whether to buy a complete pre-formed assembly or individual hose sections, and whether OE-spec or upgraded barrier-lined construction matters for your climate and usage. Because these hoses are routed to fit a specific engine bay layout, vehicle fitment is the most critical filter — confirm the assembly covers the correct line (suction, liquid, or combined), connection type, and fitting orientation for your Pontiac Bonneville before purchasing.

OE-Replacement Complete Assembly
Best for
Straightforward like-for-like swap with correct pre-formed bends and factory-matched fittings
What you get
Drop-in fit, correct routing, seals and O-rings often included; quickest installation with no fabrication
Barrier-Lined Hose Assembly
Best for
Vehicles in hot climates or high-mileage use where standard rubber hoses degrade faster
What you get
Multi-layer construction with a nylon inner barrier that reduces refrigerant permeation and extends service life over basic rubber
Suction Line Only
Best for
Situations where only the large-diameter low-pressure hose has failed and the liquid line is still in good condition
What you get
Lower upfront cost; targets the line most prone to cracking from heat cycling and vibration
Liquid Line Only
Best for
Cases where the smaller high-pressure line is kinked, corroded at the fittings, or leaking at the condenser connection
What you get
Addresses the high-pressure side without replacing serviceable suction-side components; often a shorter, simpler hose

A/c suction and liquid line hose assemblys brands we stock for your Pontiac Bonneville

UAC
2 options · from $125.95
GPD
1 option · from $134.95

Replacing the A/C suction and liquid line hose assembly on a Pontiac Bonneville

Advanced⏱ 1.5–3 hoursA/C line disconnect tool set (spring-lock or quick-connect style, matched to fitting size)Combination wrench or flare-nut crow's foot set for threaded fittingsO-ring pick and replacement O-ring kit compatible with R-134a or R-1234yf refrigerantManifold gauge set (if verifying pressure after recharge)Safety glasses and nitrile gloves

Before any work begins, have the refrigerant professionally recovered — opening the system with refrigerant present is illegal and dangerous. Once the system is depressurized, disconnect the hose at both ends using the appropriate line disconnect tool, taking care not to damage the sealing surfaces, then route the new assembly following the original path and secure any factory brackets or clamps. Install new O-rings lubricated with refrigerant-compatible oil at every fitting, then have the system evacuated to remove moisture and air before it is recharged to the manufacturer-specified capacity.

Frequently asked questions

How much does it cost to replace A/C suction and liquid line hose assemblies on a Pontiac Bonneville?
Parts start at $125.95 for a Pontiac Bonneville hose assembly at AutoBuffy. Add professional labor — typically one to two hours at a shop's hourly rate — plus the cost of evacuating and recharging the A/C system with refrigerant, which is required any time the system is opened. Total repair costs vary significantly by region and shop.
Can I drive my Pontiac Bonneville with a leaking A/C hose assembly?
You can drive short distances, but it is not advisable for long. Once refrigerant escapes, the compressor runs without adequate lubrication because refrigerant oil circulates with the refrigerant. Continued operation risks scoring or seizing the compressor — a far more expensive repair than replacing the hose assembly promptly.
Do I need to replace both the suction and liquid lines at the same time on a Pontiac Bonneville?
Not always, but it is worth inspecting both when the system is open. If one hose has deteriorated from age, heat, or vibration, the other is often in similar condition. Replacing both at the same time avoids paying twice for the refrigerant evacuation and recharge, which is required each time the system is opened.
Can I replace an A/C hose assembly myself on a Pontiac Bonneville?
The mechanical removal and installation is within reach for an experienced DIYer, but legally the refrigerant must be recovered by a certified technician using EPA-approved equipment before you open the system. Most DIYers handle the hose swap themselves and have a shop perform the evacuation, recovery, and recharge at the start and end of the job.
What causes A/C hose assemblies to fail on a Pontiac Bonneville?
The most common causes are age-related rubber hardening and cracking, heat cycling from the engine bay, vibration that fatigues the hose where it meets rigid fittings, and corrosion at aluminum or steel end fittings. Contaminated refrigerant or moisture in the system can also degrade the hose interior and accelerate failure.
Will any A/C hose assembly fit my Pontiac Bonneville, or does it have to be vehicle-specific?
It must be vehicle-specific. The suction and liquid line assembly is pre-formed to match the exact routing, length, bend angles, and fitting sizes of your Pontiac Bonneville's engine bay. A universal hose cut to length can work as a repair in some cases, but a direct-fit assembly is strongly preferred for reliability and a leak-free seal at both connection points.

Shop a/c suction and liquid line hose assemblys by year for the Pontiac Bonneville

200520042003200220012000

More parts for your Pontiac Bonneville

Keyless Entry TransmitterFuel Injection Throttle Body Mounting GasketRadiatorMass Air Flow Sensor ConnectorA/C Compressor Control RelayA/C Evaporator Core Repair KitEngine Crankshaft Position Sensor ConnectorOxygen Sensor Set

A/c suction and liquid line hose assemblys for other Pontiac models

Pontiac Wave5Pontiac Grand PrixPontiac G3Pontiac G3 WavePontiac Wave