Answers
Dec 03, 2023 - 02:08 PM
The fact that you're experiencing limp mode only in hot weather and not in cold weather could be related to temperature-sensitive components or sensors in your 1995 GMC Sierra. Limp mode is often triggered by a fault detected by the engine control module (ECM) that can affect engine performance. Given the age of the vehicle, wear and tear on various components over the years may contribute to these issues. The lack of a check engine light may indicate that the fault is intermittent or not severe enough to trigger a permanent diagnostic trouble code (DTC).
Dec 04, 2023 - 09:47 PM
Hey there! So, the hot-weather limp mode mystery in your '95 GMC Sierra - is an interesting puzzle. Here's the deal: In warmer temps, things like sensors and circuits can get a bit touchy. Heat tends to mess with electrical components, causing glitches that trigger limp mode.
The fact that limp mode is only available during the summer suggests that something is heat-sensitive, perhaps a sensor or connector acting up when things get hot under the hood. In the winter, lower temperatures may play kind, giving you a break.
No check engine light complicates things a bit. Usually, it's the car's polite way of saying, "Hey, something's not right." Without it, we're kinda left playing detective without the usual clues.
For a solid lead, consider checking the usual suspects: throttle position sensor, mass airflow sensor, and transmission-related stuff. Also, a diagnostic scan in both seasons might catch a sneaky intermittent issue. I would recommend taking the vehicle to a qualified mechanic to have it diagnosed. The mechanic will be able to use a diagnostic scanner to check for trouble codes and perform other tests to narrow down the cause of the problem.
Keep cool (or warm, depending on the season), and let me know how the garage investigation goes!
The fact that limp mode is only available during the summer suggests that something is heat-sensitive, perhaps a sensor or connector acting up when things get hot under the hood. In the winter, lower temperatures may play kind, giving you a break.
No check engine light complicates things a bit. Usually, it's the car's polite way of saying, "Hey, something's not right." Without it, we're kinda left playing detective without the usual clues.
For a solid lead, consider checking the usual suspects: throttle position sensor, mass airflow sensor, and transmission-related stuff. Also, a diagnostic scan in both seasons might catch a sneaky intermittent issue. I would recommend taking the vehicle to a qualified mechanic to have it diagnosed. The mechanic will be able to use a diagnostic scanner to check for trouble codes and perform other tests to narrow down the cause of the problem.
Keep cool (or warm, depending on the season), and let me know how the garage investigation goes!
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