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Prev Professional Automotive Repair Technical Discussions for August 3, 2011
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Open Help Requests for GM
Help Request Answers
1999 Chevrolet Corvette 5.7L Pressure Switch VIN: 1G1YY22G9X
The car came in with 3-4 clutch failure. It had 1st and 2nd. We rebuild and installed the trans. It worked perfect on a 4 mile road test. The customer picked it up and called back a hour later stating it had set a code p1810 (invalid pressure switch reading). ...
2000 Chevrolet Blazer LS 4.3L Hesitation, Misfire, MIL Lamp on VIN: 1GNCT18W8Y
Good evening, we have a 2000 s10 blazer here this has a 4.3 spider web injection system. On cold starts the truck runs poorly, backfires has no exceleration until warmed fuel pressure is 65psi all the time, fuel trims at 3to-1 short turm and long term. O2 sens... Trouble codes: P0300
2001 Chevrolet Corvette 5.7L turn signals VIN: 1G1YY22G81
we have a 2001 corvette in our shop .The turn signals will very intermitently stop working. no indicators on the dash either side.completly dead.everything else works fine.if you turn the car off and then start it again the signals start working again.any help...
2007 Chevrolet Aveo LS 1.6L Alternator VIN: KL1TD56677
Customer drove car here and it died while pulling into the yard. Customer stated battery light was on. We charged the battery then tested the battery and alternator, alternator failed it was replaced. Also replaced timing belt at customers request. Test drove ...
2009 Chevrolet Trailblazer LT 4.2L Misfire, MIL Lamp on VIN: 1GNDT33S69
vehicle presents with MIL illuminated, P0300 stored in ECM.Check misfire monitor, cylinder #3 is racking up misfires in history. swapped coil with cyl. 2, misfire did not move with coil. Swapped spark plug with cylinder #2, misfire still present on cylinder #3... Trouble codes: P0300 (Random misfire)
1988 Oldsmobile Toronado 3.8L Instruments/AC System VIN: 1G3EZ11C8J
Ok... I need an old-school Oldsmobile tech's advice on this one. This is my personal car. I bought it almost 18 years ago at a salvage auction because it was flooded, but nothing was damaged then except the transmission which I replaced with a new GM unit th...
2000 Oldsmobile Intrigue GLS 3.5L Excessive Emissions, Poor Fuel Economy VIN: IG3WX52H1Y
Ok this car came to me with a very bad misfire.found plugs and boots worn replaced them misfire gone.test drove couldn't get over 25mph pulled over and cat was red hot ok replaced cat 60 sec after start cat red hot again.i also saw that maf reading were at 18....
1998 Pontiac Grand Prix GTP 3.8L left side A/C output VIN: 1G2WP5219W
I have this 98 Grand Prix that is not blowing cold from the drivers side only. I've searched and read most of the fixes in the data base for this type of problem. Most of them are low refridgerant charge. This is not the case on this one. It had a leak, and af...
2006 Saturn Ion-3 2.4L No Start VIN: 1G8AL55B56
Vehicle came in with slight drivabilty complaint and C.E.L. Scanned and had codes P0011-intake cam position sys performance. P0128-Coolant thermostat. P0300- Random/multiple misfire detected. P1174- Fuel trim cylinder balance Bank 1. Engine mechanically good. ... Trouble codes: U1000 (Loss of class 2 serial data in every module), U0121 (Loss of comm with ABS module), U0140 (Loss of comm with BCM), C0551 (Optional configuration error), C0000 (Vehicle speed info circuit malfunction), U1017 (testing and results)

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac CTS 3.6L Misfire VIN: 1G6DP56745
I thank everyone for the responses. i had no troubles. I was just concerned when I read on alldata under replace ignition coil they stated "important" do not separate upper intake manifold from lower intake manifold. i didn't know why & still don't. i was afra... Trouble codes: P0300, P0303 (Misfire 3 cylinder).
1994 Chevrolet Camaro 3.4L timing cover VIN: 2G1FP22S0R
customer declined the repair, but from the replies, I don't think the oil pan has to come off, just wrestle the cover on and off like most other engines.
1997 Chevrolet Cavalier 2.2L power windows VIN: IGIJF5247V
Car had 4 bad window motors,pulled all door panels to ck power to motors,ok, cars was given to this lady from deceased relative.
2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W51
Thanks to all who replied. As I said before we had replaced the injectors, crank sensor, and had performed a major tune. I did try a crank sensor shim though, and the concern became worse. I took the shim back out and the CEL has not returned. The customer too... Trouble codes: P0304 (Cyl 4 misfire).
2001 Chevrolet Silverado 2500 HD 6.0L brake pedal VIN: 1GCHC29U51
Thanks to all for the good information. The fix was to clean rust from under the stainless caliper slides on all 4 wheels and found air in the front calipers. I went back and cleaned rust from under the front abs sensors while I was at it. Truck has a great br...
1997 GMC K1500 Sierra SLE 5.7L Gas inside computer VIN: 1GTEK19RXV
So much for Physics class! I guess it is only water that seeks it's own level! I was not the gremlins or the new invention, it was the intake plenum connector where the injector pins proturde thru the connector. Took the top off the connector and it was ful...
1996 Pontiac Grand Am SE 3.1L temp,tach,speedo,fuel gauge VIN: 1G2NE12M7T
I guess I was hoping for some testing info on this one but it boiled down it just had to be the cluster(IPC). We got another used one and everything is working fine now. Thanks for the replies.
2000 Saturn SL2 1.9L Harsh reverse VIN: 1G8ZK5270Y
A great thanks to all that replied! After beating our heads on this car we finally called our valve body distributor in California and they led us in the right direction. Nobody really had any real tests other than a few pressure specs. and resistance tests. W...
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