03 GMC Envoy 4.2 no start. No signal @ coils, Is this a PCM problem?

Asked by Sep 29, 2017 at 10:41 AM about the 2003 GMC Envoy XL SLT 4WD

Question type: Maintenance & Repair

8 Answers

4,390

Have you tested crankshaft and camshaft sensors? Any check engine light?

125,575

Maybe, but like mentioned above I'd be looking at sensor problems first, if you don't have a scanner, either buy a good one, make sure it has live data and freeze frame capabilities. Or if your in the right area some parts store will rent one out.

Yes, both crank & cam sensors are providing feedback.

No codes.

125,575

They are not suppose to show feedback, you should see a good clean signal pulse on both of the sensors, if it is showing any "feedback" or "static" check the wiring for chafing then if that is good replace the sensors.

sorry, wrong word, pulse is what I should have said.

125,575

Ok so next check to see if the ECM is sending out a signal on the spout wire at the ECM for each coil, if no signal the you have an ECM problem, if you have an spout signal then you have a wiring issue.

1 people found this helpful.

no signal at ECM, must be ECM. Checked continuity, all spout wires ck out.

Your Answer:

Envoy XL

Looking for a Used Envoy XL in your area?

CarGurus has 13 nationwide Envoy XL listings starting at $4,999.

Postal Code:

GMC Envoy XL Experts

  • #1
    mhgcards
    Reputation
    240
  • #2
    John Leone
    Reputation
    150
  • #2
    COMETGUY61
    Reputation
    150
View All

Related Models For Sale

Used GMC Envoy
47 listings starting at $6,871
Used GMC Yukon XL
5 Great Deals out of 651 listings starting at $5,995
Used GMC Yukon
13 Great Deals out of 1,069 listings starting at $3,900
Used Chevrolet Tahoe
12 Great Deals out of 873 listings starting at $4,999
Used Chevrolet Suburban
13 Great Deals out of 511 listings starting at $6,495
Used Ford Explorer
22 Great Deals out of 1,693 listings starting at $1,995
Used Chevrolet TrailBlazer EXT
9 listings starting at $7,995
Used Chevrolet TrailBlazer
41 listings starting at $2,950
Used GMC Envoy XUV
1 listing
Used Ford Expedition
15 Great Deals out of 405 listings starting at $4,995
Used Honda Pilot
21 Great Deals out of 888 listings starting at $3,495

Used Cars For Sale

2006 GMC Envoy XL SLT 4WD For Sale
2 listings starting at $5,995
2004 GMC Envoy XL SLT 4WD For Sale
1 listings starting at $4,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.