1994 Chev Suburban Malfunction - Drive Train & Driveline


Question: every once in awhile, when you start off, usually when cold, It will satrt off in 2nd gear, and stay there. It will not shift into any other gear. When you get up to 40-50, and you let off, its like its in neutral untill you accellerate and the engine RPM catches up. This has happened several times in the past few months. You let it sit for 5-10 min, it then works like normal!!

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Technican: 2 questions for you. Have you checked the fluid level with the truck warm and on level ground? And when was the last time you had the tranny filter changed? If it has been a while (more than a year) I would change the tranny filter and go from there. Let me know and we can go from there.
Owner: ...Yes fluids are at the proper level, And the transmission and Transfer cases were changed and refilled about 6 months ago. The shop that did it said there were no excess filings in the filter. When you first start out, reverse goes right into gear, no hesitation, as does foward.
Technican: I dont have your answer. It makes sense that your tranny has great reverse.. but why does it drop into second (limp home mode) then back to normal.. sounds like a possible valve block problem but I do not have a good answer. Please release the question and maybe someone else can help you. Sorry for the inconvience.

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