All vehicle makes and models go through mechanical issues, and the Colorado is no exception.
Below are some common issues that Holden Colorado owners have reported with Holden Colorado RG models equipped with 6 Speed 6L50 General Motors Auto.
Common Issues
Common issues with a 6-speed transmission in the Holden Colorado encompass problems like shifting irregularities, gear slippage, and sudden jerking movements.
In 2017, a substantial recall involving over 10,000 utes was issued due to transmission-related concerns. This recall was specifically aimed at vehicles manufactured between 2015 and 2017, targeting an issue associated with the transmission software, which could lead to shifting problems and gear slippage.
Transmission Shuddering at Low RPMs: A Common Issue
The Holden Colorado frequently exhibits shuddering in low gears, particularly during acceleration. This issue is primarily attributed to a problematic torque converter, which has been reported by numerous owners.
Malfunctioning Torque Converter: A Pervasive Problem
The torque converter in the Holden Colorado commonly malfunctions, leading to shuddering sensations while driving. This component is responsible for power transmission and maintaining speed while in gear, but it tends to develop issues earlier than expected in this vehicle.
“I’ve got a 2013 RG Colorado Auto that has been great up until now. The other day when not far from home, sitting at the traffic lights, I’ve hit the throttle and something went bang, and since then, the trans is slipping very bad.”
Colorado2013 – Whirlpool source
This unfortunate incident occurred just after the ute was out of warranty, at 3 ½ years old and with 110,000 kilometers on the odometer. The commenter emphasized that there had been no prior issues or signs of slipping, leaving them pondering the possibility of a torque converter problem.
Vacuum Testing
Suspected Vacuum issues can be tested. Check this guide below
6L50 Valve Testing – https://www.transmissiondigest.com/vacuum-testing-gm-6l45-6l50-6l80-6l90/
Warranty
Depending on how far out of warranty the Ute is, Holden Customer assistance may be able to help.
If you have full service history, despite the fact it’s out of the official warranty period, your dealer should be able to ask Holden for goodwill.
Call and see if they can help.
Other Models
As the 6L50 Auto is a General Motors model, and you will find this gearbox in many other vehicles. This means parts are plentiful.