Question about 1998 GMC Jimmy

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Can the engine serial number lead to year model identification on a GMC Jimmy?

Two numbers on the block are W7S82 and W7S27AFJ. What is the year model of this 4.3 Vortec . I was told it was a 99 but some 99 parts don't fit

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  • fhobgood Oct 23, 2008

    engine has been swapped

  • fhobgood Oct 24, 2008

    service engine light stays on and the computer said it's the knock sensor. Unfortunately there is no port under the exhaust manifold like there should be on a 99. instead there are two ports on either side of the block. Got any idea what year model that might be? All I really need is a head gasket set for it .

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In one word NO! The number on the block mean very little as far as the year! But GM is one of the better when it comes to swapping parts! Never heard of this before! Sure like to know what parts are not fitting?? Frankster016

Posted on Oct 23, 2008

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Click over pic for zoom...

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Fig. 1: Location of the engine identification number-2.2L engine




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Fig. 2: Location of the engine identification number-4.3L engine


Hope helps (remember rated this).

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Check this...

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Also engine identification can take place using various methods. The VIN, described earlier in this section, contains a code identifying the engine which was originally installed in the vehicle. In most cases, this should be sufficient for determining the engine with which your car is currently equipped. But, some older vehicles may have had the engine replaced or changed by a previous owner. If this is the case, the first step in identification is to locate an engine serial number and code which is stamped on the block or located on adhesive labels that may be present on valve covers or other engine components.

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Fig. 2.2L engine date code and partial VIN location

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Fig. Engine partial VIN location- 2.4L Engines

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Fig. 2.4L engine code label location

More details in autozone.com (free register). I hope help you with this (remember rated this help) Good luck.

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