I'm not sure what the spec is on GM, but on Ford, they do not use the MAF for TCC lockup modulation. Ford also did not continue use of a MAP sensor. They are looking for TP voltage to drop below 1.2 volts or go above 3 volts or a high signal from the brake circuit. GM should be somewhat similar. This is a fairly common complaint on GM vehicles. Many times it turns out to be a problem with the TCC solenoid. To be sure, there is only one sure way to solve it, and that is diagnosis BEFORE throwing parts at it. A good live reading scan tool can be a good friend for this problem.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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