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Prev Professional Automotive Repair Technical Discussions for September 21, 2011
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Open Help Requests for GM
Help Request Answers
2001 Cadillac DeVille 4.6L Unknown VIN: 1G6KD54Y01
Hi, everyone this car came in for door locks and window not operating. Checked all ground and power wiring , everything looks ok. With the remote entery door locks working , which tells me (ddm)is working fine , right front window working fine but other windo...
2003 Cadillac DeVille 4.6L radio VIN: 1G6KD54YX3
the customer complains of no radio. all the radio will do is come on for about 5 seconds and thing go off. the clock will stay on but the radio will not come back on till you cut the key off and turn it back on. Even when it comes on you have no audio. I tried...
1978 Chevrolet K20 Scottsdale 5.7L cruise control VIN: 248J502852
This is a request for suggestions for installing a cruise control on this thing (1978 K25, V8, auto trans). We used to install a lot of aftermarket cruise controls (15 or 20 years ago)but haven't done one in years. This is a good customer. Bought the truck new...
1994 Chevrolet S10 Blazer 4.3L No Power Aft. 40MPH VIN: 1GNCS13W9R
This is one of those I should have turned away but I'm too hard headed, any way I always like a good challenge. He's very unhappy that the last shop sold him a Fuel pump and Injectors but didn't fix the problem, I told him that if I can't fix it I won't charge...
1997 Chevrolet Blazer LS 4.3L Fuel Pump, Dash lights, Power windows, blower fan VIN: 1GNDT13W2V
Hi Guys and gals, Before I take this project on I'd like to run the problem past you all. I've never seen a problem like this and don't know if I want to attempt it. What's happening is you can turn the key on (not started) and you hear the fuel pump buzz like...
1999 Chevrolet Express 1500 5.0L Surge, Stall, MIL Lamp on VIN: 1GBFG15M2X
Thanks in advance..I have what should be simple fix po122 I have ran the trouble tree several times its A simple tree... I ONLY HAVE .03 volts at idle and .54 at wot IHAVE GOOD 5 VOLT ON THE GREY WIRE EVEN WITH SENSOR CONNECTED SCAN WILL READ 5 VOLTS WITH 5VOL... Trouble codes: P0122
1999 Chevrolet Silverado 1500 5.3L Gauges VIN: 2GCEK19T2X
Checked all fuses relays i even change the cluster still nothing is working,i drive the truck and some times the gauges will work but not all of them, the gas gauges runs back and forth sometimes and when you first start it the 4x4 lights will stay on for like...
2005 Chevrolet Cavalier 2.2L Cuts out, VIN: 1G1JC52F95
At first the car would spin over like it was out of time. the exhaust wasnt restricted or the intake. Checked compression 140-150 on all 4 and less then 45% on leakdown test. took the air cleaner off and sprayed the intake with carb cleaner and it fired up. Th...
2007 Chevrolet Silverado 1500 LS 4.8L MIL Lamp on VIN: 2GCEK19CX7
Customer recently bought this truck. Truck came in with tire pressure monitor light on. No communication with OTC scanner. Found corrosion on circuit board in Tire P module. Bought new GM module. Now have communication. We can put in tire size and air pressure...
2004 GMC Sierra 1500 SLE 5.3L RF speed sensor VIN: 2GTEK19T44
This GMC sierra has an abs application at under 10 mph.No codes. I monitored all speed sensors and found the RF wheel speed sensor acting up. Scan data shows RF dump valve and the RF ISO valve being commanded on at 10 mph and less.Wheel bearing is tight,no deb...
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 132FDOI1CD
truck keeps throwing PO446 code replaced vent solenoid and carbon canister as both were full of dirt and would not close solenoid has been back twice now for same code we can hear click (open/close) with scanner vent should be working Thanks for your help we d... Trouble codes: P0446
2007 GMC Yukon Denali 6.2L Engine Mounts VIN: 1GKFK66847
Hello Techs. Just sold both Engine mounts on this AWD Denali. Labor time calls for 9.6hrs. Just wondering if anybody knows any shortcuts? Any suggestions would greatly be appreciated.
2003 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NF52E33
The vehicle cranks very good and fires but no start. After replacing sensors and plugs nothing changed, it will fire and fire but no start. I have RPM on my scanner while cranking, but no cam signal while cranking, but I doon"t know if that would make a differ... Trouble codes: P1626 (Theft deterrent fuel enable signal lost)
2004 Saturn Ion-3 2.2L Engine VIN: 1G8AW14F54
Vehicle came into shop with a engine knock. Seems to go away after sits and idles for a couple of minutes but really wraps while driving. No metal shavings in oil and no signs of internal damage with oil pan and valve cover removed...We don't have that much ex...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick Rendezvous CX 3.4L No Start VIN: 3G5DA03E45
Many Replies From Many Top Techs, I Thank You all. Pin 70 from the computer feeds 12 volts to crank sensor. I peeled back the harness going to crank sensor B (in Block)did not find anything wrong but changed the crank sensor.After that i did not have any prob... Trouble codes: P0335.
1999 Chevrolet P30 7.4L Oil in coolant VIN: 5B4KP37J7Y
Thanks to everyone who responded. Yes, this is a 2000 454 Workhorse chassis motorhome. 1999 P30 454 was as close as I could chose from the menu. The customer added his own oil in the right place and the oil level went up accordingly. The oil in the radiato...
2001 Chevrolet Express 1500 4.3L No Start VIN: 1GCFG15W01
Thank to all how sent me help. The customer is going to take it back to the one how changed computer. He hopes to get old back and then get it fixed. Trouble codes: P1631 (Theft code. Pass lock and computer not agree).
2003 Chevrolet Silverado 1500 5.3L Hesitation, Cuts out, Stall, MIL Lamp on VIN: 2GTEC19T83
Thanks for all the great replies. They mostly pointed to the ground on the right rear of the engine or wires broken in the loom going to the throttle body. We had replaced the connector at the tb with a new gm replacement but I missed a few more strands furthe... Trouble codes: P1518.
2006 Chevrolet Tahoe Z71 5.3L Drive-axles VIN: 1GNEK13T56
I would like to start out by saying thank you to all that offered help. There are some very informed and knowledgable technicians on here. Once again I did not listen to my years of experience and doubted myself. After purchasing a new set of chasis ears if wa...
2003 GMC Sierra 2500 HD 6.6L Torsion Bars VIN: 1GTHK23183
Thank you all for providing ideas and information. To answer some of your questions, The torsion bars were not mark, I told my tech to do that but he did not. The truck is being lifted on the frame and has been during this whole repair. Here is what we did. ...
2000 Oldsmobile Alero GL 2.4L Red Brake Light VIN: 1G3NL52T3Y
replaced abs motor asy. with a used asy. all this for the red brake light. tganks for the help, Andy
2002 Pontiac Montana 3.4L trac control VIN: 1GMDX03E2D
Well we replaced the insrument cluster and all is good now seems that the display some how burned out. Thanks to all
2004 Pontiac Vibe 1.8L Poor Idle Quality VIN: 5Y2SL62824
close without fix. all i was able 2 do was clean air passages,havent been able 2 get customer back in 2 run any other test. customer is a migrater so will probubly end up at a dealer.thanks for all who replied. i will post any new info i get on this
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