There is a technical bulletin on this matter. This allows for low engine speeds at cruising rpm and ultimately opportunities for significantly reduced fuel consumption in relative terms. After a detailed investigation, I have discovered that this is a common problem with this particular transmission, as they have corrected it on the 2003 models. However, consumer was told there was nothing they could do. Since 1918, Dorman Products has supplied the automotive aftermarket with high-quality replacement parts, hardware and fasteners. This allows for low engine speeds at cruising rpm and ultimately opportunities for significantly reduced fuel consumption in relative terms.
I will not buy another gm car in my lifetime. This part is also commonly used on the 2007. If I remember correctly, it is on the drivers side and is a rod aboutsix inches long and has two ends that basically pop into rubber gromets. This filter is a genuine Allison replacement so you know it will fit and perform perfectly in your Allison 1000 transmission. Go to for complete details. The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor. The Filter Loc is designed to hold the Allison shallow pan filter in place.
At 75000 miles the gear failed in a parking garage when I parked my truck I had appox. No repairs were performed by the dealer due to the extensive work and expense. Thankfully it wasn't parked so it would have rolled down the ramp. Also, transmission will intermittently fail. The six speed model also has dual overdrives, with the second overdrive ratio being rather high. The transmission does not shift into 1st gear correctly, and has a hard time shifting into high gears, and the rpm stay high running in the truck. I am lucky so far.
This filter is designed to help protect sensitive shift control valves and prevent secondary damage to engine parts by providing maximum flow. Consumer stated that when driving through water or mud shift lever will freeze up. At first, I could shift to N then back to drive and it all would be fine. Made from cast aluminum, the covers add strength to center of the transmission case eliminating trans oil seepage at the mating surface. Drain and replace differential fluid immediately if the axle is submerged in water.
I have 58,000 miles on my vehicle. If yours has electronic four wheel drive, the electric acutator could be out or going out. I had to have my transmission rebuilt and the transmission shop said that it was a common problem and that gm has come out with a revised part that is hardend. Also, transmission will intermittently fail. It was not a strong enough part for the transmission.
The dealer performed a diagnostic test that produced a code involving the automatic transmission. Allison's specialty is commercial grade automatic transmissions for medium and heavy duty applications, which includes everything from transit buses to tractor trailers. Dormans quality-engineered Auto Transmission Speed Sensor restores peak transmission function. Allison 29535617 Spin-On Filter Magnet 23824 1. Because the magnet resembles a large washer and can stick to the top of the filter, they are commonly thrown away during routine maintenance. At 37260 miles the gear failed, my vehicle it did not have reverse, and it would not shift into 2nd gear. Fluid level should be checked periodically.
When I returned to my vehicle the trucks front bumper was touching the wall. I guess people have to die in order for a recall to be made by general motors. Lets see how these old rotted transmission lines come out of my truck. This is a safety feature built into the Allison's programming which locks the transmission in 3rd gear if rapid or excessive slippage is detected. I am not responsible for any damage anyone does to equipment or themselves from the information contained in the video. Rather than becoming outdated, the Allison has evolved to match the performance characteristics and demands of the Duramax turbodiesel, which has undergone significant changes itself through the years. This is a safety feature built into the Allison's programming which locks the transmission in 3rd gear if rapid or excessive slippage is detected.
The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor. It will get you out of 4 wheel drive until you have the ime to diagnose the electronics at least. Automatic Transmission problem 23 Allison transmission problem: while in overdrive with a towing load going uphill, the transmission will downshift in or out of cruise control, causing the engine to increase speed up to the danger zone of 3300rpm. This filter is the deep version and can be used with the Mag-Hytec and Allison deep transmission panFeatures:Stock ReplacementFor Deep Pan ApplicationsNote: While this filter is a direct fit replacement, it is not a genuine Allison part. This addition is particular attractive in terms of fuel consumption, as the lower engine speeds create an opportunity for greatly improved fuel economy on the highway. Protect your transmission using only the best. If that rod is bent in any way, or has come loose of the gromets, it will not shift into or out of the four wheel drive.
I have 58,000 miles on my vehicle. Potential buyers were immediately concerned with regard to the Duramax's aluminum heads, and for nearly a decade owners of competitor's pickups would gripe about their distrust for the alloy heads. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not the Disgruntled Mechanic. Also I talked to other people that have the same transmission and they have had the same problems. When this occurs, owners will experience a significant decrease in engine performance and reduced vehicle speed performance and ratio limited. .