Sun West Transmissions (623) 473-9800
Sun West Transmissions (623) 473-9800

This option usually costs an additional $300, especially if you're considering services from Sun Transmission or Sunwest Transmission for your transmission repair in Glendale, AZ. It's advisable to check with a transmission shop in Glendale, AZ for the most accurate estimates.

Many builders, including those at Sun West Transmission, will skip replacing or sending out your Pump/Bell housing assembly simply for cost reasons. However, at Sunwest Transmission, we always start off with a newly machined Pump/Bell housing assembly, ensuring quality in every transmission repair in Glendale, AZ. When you choose our transmission repair Glendale AZ you can trust that you're getting the best service possible.

At Sunwest Transmission, we send our cores to a local transmission machinist who specializes in transmission repair in Glendale, AZ. He resurfaces the areas where the pump impeller spins and machines the top surface to maintain integrity, ensuring there’s no deficit in the space between. Every 6L80 and 6L90 receives a machined pump, stator, and bell housing; we take no shortcuts at our transmission shop Glendale AZ.
The 1234 piston is a known issue with these applications, particularly in the context of sun transmission systems. The piston can develop cracks, which may lead to clutch failure (figure 3). If you’re working on an early application, always update the piston to the later design, as GM has made improvements to address these issues. At Sunwest Transmission, we often encounter these cases in our transmission repair Glendale AZ services.
Additionally, the piston housing has a tendency to crack, although it isn’t as common as the piston itself. The inside diameter of the housing can develop a crack and may even break away completely, resulting in 1234 apply issues. Like the piston, GM has also updated the housing to resolve this problem, ensuring that our transmission shop Glendale AZ can provide reliable repairs.


This option usually costs an additional $300, especially if you're considering services from Sun Transmission or Sunwest Transmission for your transmission repair in Glendale, AZ. It's advisable to check with a transmission shop in Glendale, AZ for the most accurate estimates.
Many builders, including those at Sun West Transmission, will skip replacing or sending out your Pump/Bell housing assembly simply for cost reasons. However, at Sunwest Transmission, we always start off with a newly machined Pump/Bell housing assembly, ensuring quality in every transmission repair in Glendale, AZ. When you choose our transmission repair Glendale AZ you can trust that you're getting the best service possible.
Protects the Transmission Pump: When a stock converter’s clutch material fails, it creates fine metal shrapnel that enters the shared fluid system. This debris quickly destroys the transmission’s aluminum oil pump and internal valves. A billet unit’s increased durability prevents this contamination from occurring in the first place, which is crucial for maintaining the integrity of your sun transmission. If you're facing issues, visiting a transmission shop in Glendale, AZ, like Sunwest Transmission, can help with reliable transmission repair in Glendale, AZ.
Enhanced heat management is a key feature of billet converters, which often include larger clutch surface areas and improved fluid flow designs. This helps maintain lower transmission temperatures, especially during demanding tasks like towing or high-performance driving. For those in need of reliable solutions, visiting a sun transmission or sunwest transmission shop can provide expert transmission repair in Glendale, AZ.
The stock unit, particularly the JMBBX model found in some sun transmissions, suffers from several manufacturing deficiencies:
Thin Stamped Cover: The OEM cover is prone to flexing under heat cycles and heavy loads, causing the lockup clutch to apply unevenly.
Weak Clutch Material: It uses a single-disc, thin woven carbon friction material that frequently flakes off or becomes glazed.
Aggressive Lockup Calibration: To maximize MPG, factory tuning commands the converter to 'slip' constantly (even in low gears), generating excessive heat and wear that can lead to the need for transmission repair Glendale AZ.
Soft Impeller Hubs: The hubs can shear or strip, which immediately compromises the hydraulic line, an issue that could be addressed at a reliable transmission shop in Glendale, AZ.
The 1234 piston is a known issue with these applications, particularly in the context of sun transmission systems. The piston can develop cracks, which may lead to clutch failure (figure 3). If you’re working on an early application, always update the piston to the later design, as GM has made improvements to address these issues. At Sunwest Transmission, we often encounter these cases in our transmission repair Glendale AZ services.
Additionally, the piston housing has a tendency to crack, although it isn’t as common as the piston itself. The inside diameter of the housing can develop a crack and may even break away completely, resulting in 1234 apply issues. Like the piston, GM has also updated the housing to resolve this problem, ensuring that our transmission shop Glendale AZ can provide reliable repairs.

Sun West Transmission and Auto Repair Glendale
6116 West Northern Ave Glendale, Arizona 85301
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