Some GMC Sierra 1500 owners report experiencing issues such as dashboard cracking, particularly in vehicles exposed to extreme temperatures or prolonged sunlight. Additionally, there have been past reports of faulty throttle and speed sensors, including failures in the four-wheel-drive transfer case position sensor, which can result in a "service 4WD" message display. While oil loss is not commonly highlighted, owners are advised to regularly check for oil leaks and maintain proper oil levels to avoid potential engine damage. It is crucial to address these issues promptly to ensure the safety and performance of the GMC Sierra 1500, as regular maintenance and timely repairs can help prevent these problems from escalating.
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