2003 escalade reduced engine power
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Joined: Sep 2023
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2003 escalade reduced engine power
recently got a 2003 esclade for free, it was in limp mode or “reduced engine power” mode. so i pulled the throttle body off, cleaned it really well and all the connectors, and it made it worse and gave me more codes. p1516, p2135, p0120, p0220. all connectors are clean. is there any way to test the tps/ tpp sensor to see if it’s bad? has anybody else had this issue or a similar issue and knows how to fix?
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