GMC Savana 2500 is a hard-working van, and that pretty much explains why it’s been giving Ram ProMaster and Ford Transit a run for their money. Even though the formula for the basic utility van has been the same for quite a long time, it has beefed up its powertrain, safety and technology. The 2019 model comes with advanced safety features.
Regardless, GMC Savana 2500 has been subject to a few engine problems. Here are some of the most common.
Some of the GMC Savana 2500 Engine Problems
Transmission getting stuck in the third gear is a common problem with 4L60E and 4L65E types of transmission. There may be a malfunction with the instrument cluster with DTC set at P0753, P0740, P1860 and P0785.
The most likely culprit is open on circuit 1020 between the transmission and fuse panel or a blown fuse. If the fuse happens to have no battery voltage, you may need to replace the ignition switch.
An abnormally harsh 1-2 shift experienced by 4L60E Transmission RPO M30 may indicate excessive bore wear that holds the regulator valves and TCC isolator. This results in extreme line pressure and the only solution is the replacement of the 4L60E valve body with isolator valves and revised TCC regulator.
When there is no movement when you shift to the third gear or Drive position, it indicates that your GMC Savana 2500 has problems. You will experience regular operation by shifting to 1st, 2nd and reverse gear positions. The obvious solution for this problem is the replacement of forward sprag assembly.
There is another common problem with 4L60E Transmission and 4L65E Transmission. The first and third gears seem to function correctly, but there are problems with the 2nd, 3rd and reverse gears. The solution is to replace the heat-treated 4L60E / 4L65 sun gear. It is a failure of the reaction sun gear.
As always, A1 Performance Auto Repair European Specialists are here to help with any GMC Savana 2500 problems.