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Prev Professional Automotive Repair Technical Discussions for October 30, 2010
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Open Help Requests for GM
Help Request Answers
1997 Chevrolet K1500 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEK1973V
Truck came in with customer complaint of long crank time to start engine.Fuel pressure was 52 psi cranking, scoped pump current,pump pattern was aweful and pump was running 2100 rpm, replace fuel pump with a new Delphi pump and strainer, also replaced main fue... Trouble codes: P0300 (Random missfire), P0305 (5 missfire failure record)
2001 Chevrolet Suburban 1500 LT 5.3L Misfire VIN: 3GNFK16T81
Vehicle came to shop engine light on dtc po300 random misfire replace all plug and short plugs wire also ckecked missfire dta # 6 and # 8 high miss fire count replace coils on # 6 and # 8 took care prblem ran compression reading # 6 showing 5o psi engine runni... Trouble codes: P0300
2001 Chevrolet Malibu 3.1L Poor Idle Quality, Hesitation, Misfire VIN: 1G1ND52J21
I tore it down to cylinder heads-found intake gaskets bad. purchase upper set & replaced head gaskets, valve stem seals, intake gaskets. Upon initial start-up 1 rocker was noisy. Had to install Healy coil. Car drove great for 1 week. Filled up gas tank and the... Trouble codes: P0300
2002 Chevrolet Tahoe LT 5.3L aux input VIN: 1GNEK13Z82
i have a customer in my shop that wants to know if i can somehow hard wire a 1/8" (headphone jack style) plug into where the tape player is on a 02 tahoe. with the tape player unplugged you cant select aux. I see from alldata that the dark green wire is serial...
2002 Chevrolet Silverado 1500 5.3L gauges VIN: 2GCEK19742
codes B2617 and 1477 are set,but what is happening is when the truck is shut off key removed and doors shut,within a few seconds the gauges come on causing low battery.Not the lights just the gauges any help is appreciated the chevy dealer didn't want to mess ...
2003 Chevrolet Blazer ZR2 4.3L front VIN: 1GNCT18X23
when engage front axle it will grind but wont ingage light stays on all the time showing four wheel drive is engaged. i have changed 4 wheel drive switch and encoder motor vac switch and gear and washer kit in front axle . it will engage some times. but lite s...
1988 Pontiac Firebird 5.0L Excessive Emissions VIN: 1G2FS21E4J
Hey guys, just l;ooking for some input on this one. This is my own car that I bought a year ago. Did not run. Replaced fuel pump and found engine knocking. Replaced engine with another 5.0 out of same year Camaro. Put back together and just cannopt get through...
2001 Pontiac Grand Prix SE 3.1L Headgaset VIN: 1G2WK52J01
Hello all, My customer brought his car in for overheating and leaking coolant. i pressure checked the system and found no leaks, removed radiator cap started vehicle ran up to operating temp, started pushing coolant out of the radiator i could also smell exhau...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet K1500 Suburban 5.7L high idle VIN: 1GNEK18K1P
Wow!!! Thanks for the overwhelming support and help. I appologize for the delayed response I was stuck on jury duty for a week and a half and when I got back the vehicle wouldn't act up. I am disappointed that I didn't get an opportunity to fix this vehicle.... Trouble codes: 43 (ESC knock sensor system intermittent).
1995 Chevrolet Tahoe LT 5.7L Poor Fuel Economy, MIL Lamp on VIN: 1GNEK18K3S
Hi everyone, the Tahoe was finally fixed this evening. I would like to thank everyone for their assistance. I replaced the O2 with an OEM part and it did not fix the problem. I had 12.2 volts at the ENG 1 fuse, and 12.2 volts at the sensor itself. The grou... Trouble codes: 13 (O2 Sensor Short or Ground).
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