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#1
05-29-2008, 07:01 PM
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not shifting????
I have a 2002 Grand Prix just doesn't seem to be shifting right. When out on the highway and you go to pass a vehicle or just "punch" it down the rpm's will shoot up but it will not shift any ideas will greatly be appreciated
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#2
05-30-2008, 09:31 AM
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Re: not shifting????
How many miles and when was the last tranny service?
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#3
05-30-2008, 04:38 PM
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Re: not shifting????
77,000 miles and replaced filter and fluid at 65,000
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#4
05-30-2008, 05:42 PM
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Re: not shifting????
Was that a pan drop service or any type of flush? Even though you may not have a SES/CEL light get it scanned with a trans capable scanner and see if any DTCs are stored in history. A few do not give a SES/CEL light. On the engine side check the throttle position sensor (TPS). Input and output. Input is PCM 5 volt dc reference and output is a dc voltage that will vary with accelerator position. Around .4 volts at idle to around 4.5 at WOT. Linear and progressive voltage in between.
Also, since you have a 2002 model you may consider getting the CAT converter checked out. See link below. Click here Plus it would help to post your GP model and/or engine.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#5
05-30-2008, 09:03 PM
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Re: not shifting????
Grand prix GT 3.8 seriesII engine
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